std. err
* p < 0.1; ** p < 0.05; *** p < 0.01
The current study’s findings revealed that the coronavirus crisis had no significant influence on WCM performance. As a result, the H2 hypothesis is unsupported. This findings are consistent with Zimon and Tarighi [ 8 ] study as they reveal that the COVID-19 crisis did not significantly alter firms’ WCM strategies. In contrast, the findings are inconsistent with Tarkom [ 58 ] study, as they demonstrate a significant negative influence of the COVID-19 crisis on WCM. In contrast, the findings revealed that firm size and leverage significantly impact WCM performance. Moreover, the results showed that the sector category (whether Sec1, the communication services sector, Sec2, the consumer discretionary sector; Sec5, the health care sector; Sec7, the materials sector) have a significant influence on the WCM performance at the same time the sector category (whether Sec3, the consumer staples sector; Sec4, the energy sector; Sec6, the industrials sector; Sec8, the real estate sector) have no significant influence on the WCM performance.
Internal and external validity can be used to analyze findings. Internal validity investigates whether the methods utilized to change the results are valid, whereas external validity explores whether could generalize the results away from the present data [ 63 , 38 , 64 ]. Sensitivity examinations are helpful for both types of evaluations. Thus, the internal validity is appraised by utilizing various variables’ combinations. Table Table4, 4 , panel A, presents the results of sequentially removing different variables used from the basic model. The current study adopted the Mann–Whitney U test to examine the efficiency scores of the modified DEA-WCME models to the original efficiency scores via the basic DEA-WCME model to verify if the removal of variable occurred a significant difference in the relative efficiency scores. Besides, the correlations of Spearman rank were computed as well.
Sensitivity analysis and model validation
Panel A: sensitivity analysis of the DEA model | |||||||
---|---|---|---|---|---|---|---|
Variables/removed | Average scores | DMUs efficient (%) | -value (Mann–Whitney) | Spearman rank correlation (sig.) | |||
None | 0.61 | 12.9% | – | – | |||
Accounts payable | 0.51 | 9.1% | 3 × | 0.832 (0.000) | |||
Accounts receivable | 0.54 | 7.5% | 3 × | 0.886 (0.000) | |||
Cost of goods sold | 0.51 | 8.6% | 2 × | 0.899 (0.000) | |||
Inventory | 0.57 | 8.1% | 0.0226 | 0.938 (0.000) | |||
Panel B: the distribution variance of efficiency scores | |||||||
Year | -value (Mann–Whitney) | -value (Kruskal–Wallis) | Spearman rank correlation (sig.) | ||||
(2018–2019) | 0.497 | 0.814 | 0.812 (0.000) | ||||
(2019–2020) | 0.944 | 0.876 (0.000) | |||||
(2018–2020) | 0.684 | 0.738 (0.000) |
It is exposed in Table Table4, 4 , panel A, that the accounts payable removal significantly decreased the model’s efficiency distinction by diminishing the average of firms’ efficiency scores of 0.61 to 0.51 and the rate of the efficient DMUs of 12.9 to 9.1%. Similarly, removing either input accounts receivable, cost of goods sold, or inventory significantly influenced the model results concerning the efficiency score distribution and the rate of the efficient DMUs. Moreover, the high correlations of Spearman ranks suggest that the firms’ rankings were not significantly altered through the efficiency models. It is not surprising that removing either input impacted the model results because they blend various resource kinds. Therefore, excluding each would occur significant information removal.
Finally, the current study used the consistency of the results over time to assess the external validity of the firms’ efficiency model. The firms’ efficiency model was re-applied utilizing 2018 data in this analysis and then matched the relative efficiency scores to the 2019 and 2020 results (Table (Table4, 4 , panel B). The Mann–Whitney U test revealed no statistically significant variance in the efficiency score distribution for the study years 2018–2019 ( p = 0.497), 2019–2020 ( p = 0.944), and 2018–2020 ( p = 0.684). The Kruskal–Wallis H test revealed no statistically significant variation in the efficiency score distribution over the study ( p = 0.814). The correlation of Spearman rank between each year was also highly significant. As a result, the general distribution of efficiency scores and the rate of the efficient DMUs not appear to change significantly from period to period, and the firms ranked as efficient remain mostly harmonious from period to period.
Empirical evidence shows that WCM has garnered substantial interest in accounting and finance research. Tewolde [ 5 ] shows that inadequate WC decisions are responsible for a considerable portion of business failures, and that WCM affects a firm’s profitability. This is striking because an ineffective WCM strategy creates a large share of past firm insolvencies [ 6 ]. As WC significantly influences a firm’s operational and financial security, the literature confirms that it is necessary to develop a good strategy for a firm’s WCM [ 7 , 8 ]. Drawing on this, there are increasing concerns regarding the coronavirus crisis toward firms that adopt WCM strategies, which may harm their performance and value. Using a unique Gulf setting, this study analyzes the efficiency of WCM before and during the coronavirus crisis using an integration between the data envelopment analysis approach and the Malmquist productivity index, and then explores the influence of the crisis on WCME using Tobit regression. To the best of our knowledge, the current study is the first to develop and apply the data envelopment analysis methodology using the Malmquist productivity index to evaluate WCME. Besides, the authors advanced a novel contribution to the literature by examining whether the coronavirus crisis has affected the WCM for firms under investigation. This study is essential for regulators, management, and investors to increase their awareness of firms’ WCM performance before and during a crisis. In addition, it provides insight into how the coronavirus crisis affects firms’ WCM, which is likely to strengthen firms’ financial policy and improve their strategies. These findings are consistent with Zimon and Tarighi [ 8 ] study as they reveal that the COVID-19 crisis did not significantly alter firms’ WCM strategies. In contrast, the findings are inconsistent with Tarkom [ 58 ] study, as they demonstrate a significant negative influence of the COVID-19 crisis on WCM.
The results show that 157 firms (approximately 84%) adopt a conservative strategy as a safe strategy for their WCM, while 29 firms have adopted an aggressive strategy, suggesting that most firms strive to provide a high level of liquidity and maintain current assets at high levels compared to current liabilities. In addition, the results of the DEA-Malmquist analysis revealed that the annual means of WCME increased by approximately 0.2% before the coronavirus crisis due to technological efficiency or frontier-shift changes. The results did not change significantly during the coronavirus crisis, with only a 3.4% increase due to technological efficiency or frontier-shift changes. Furthermore, at the 5% significance level, the Wilcoxon test revealed no statistical difference in the efficiency scores of technical and scale efficiency, and total factor productivity before and during the coronavirus crisis. In contrast to previous findings, the results revealed a statistical difference in technological efficiency and pure efficiency scores at a 5% significance level. In addition, the current study’s findings showed that the coronavirus crisis and firm age have no significant influence on WCM performance. By contrast, the findings reveal that firm size and leverage substantially impact WCM performance. Furthermore, the results indicate that sector category (communication services, consumer discretionary, healthcare, and materials) significantly influences WCM performance. Finally, our results indicate that firms that are efficient in terms of WCM have higher sales returns and net income, as the sales and net income averages of firms with relative efficiency in terms of WCM are approximately 11 and 30 times higher, respectively, than inefficient firms in terms of WCM.
Given the study findings, decision-makers and WC managers of firms should develop the necessary means and schemes to ensure the best practices of WCME and address the inefficiency aspects in terms of technical efficiency and scale efficiency to ensure that a firm operates efficiently, which would likely positively reflect on the firm and the confidence of many stakeholders. These findings highlight the need to disclose WCM practices within traditional firm reports or integrated reporting, where conventional statements alone would be insufficient to appraise firm performance, especially given the current ecosystem’s rapid and consecutive development. The findings would also pique the interest of decision-makers and WC managers, who could use the DEA methodology to investigate and identify weaknesses in firm performance, and then take significant actions to optimize performance and achieve best practices.
This study has some limitations. This study focuses on 186 firms (558 firm-year observations) in the Gulf Cooperation Council (GCC), and the findings are limited to the period 2018–2020. Based on the findings of the sensitivity analysis and model validation, the findings can be generalized to other firms in GCC and Middle Eastern countries, and future research may include all non-financial sector firms for broader applicability. Managerial ability, intellectual capital, real earnings management, ESG criteria, and the likelihood of financial distress are also important elements of financial policy that are not considered in this study but can be investigated in future studies. Despite these limitations, our study contributes to the literature by providing empirical evidence that most firms adopt conservative WCM strategies. Additionally, the WCME results revealed a statistical difference in firms’ technological and pure efficiency scores before and during the coronavirus crisis. The study also shows that the coronavirus crisis had no significant influence on firms’ WCM performance. Finally, this study may have implications for many stakeholders, including decision-makers, WCM managers, financiers, investors, financial consultants, researchers, and others, in increasing their awareness of firms’ WCM performance before and during a crisis. In addition, the results could have implications for trading strategies as investors and financiers seek to invest in companies with good WCM. The implications of WCM performance on social interests would cause decision-makers to use the best strategies and procedures to enhance WCM activities to improve their investments and image in the community in which it operates.
The first author conceived the project and planning; fundamental analysis; the framework and statistical models; collected data and analyzed it; wrote the abstract, introduction, literature review and hypotheses formulation, data and methodology, results and analyses, and conclusions and implications; reviewed and edited the manuscript; responding to coming reviewers’ comments. The second author conceived the project and planning; results and analyses; reviewed the manuscript.
The authors declare no competing interests.
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Submitted: 27 April 2021 Reviewed: 13 August 2021 Published: 21 September 2021
DOI: 10.5772/intechopen.99912
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The success of any business depends on its profitability, liquidity, and solvency. Liquidity plays an important role in the successful running of a business. Many prior studies have been conducted to measure the relationship between working capital and profitability. The results showed that the high investment in inventories and receivables is associated with lower financial performance. They found a negative relationship between Return on Assets and Inventory turnover and Cash conversion cycle the present study is designed to know the direct impact of working capital on profitability by choosing the days of collection, days of payment, days inventory converts to sales and finally the cash conversion cycle. This study examines the association between the profitability and working capital using the data of 15 US trading companies for the period of 2015 to 2019. The key points in this study are firstly there exists a negative relationship between the profitability and the average collection period, the lower the average collection period higher will be the profitability, indicating that a decrease in the number of days a firm receives payment from sales affects the profitability of the firm positively. Secondly there is a highly significant positive relationship between average payment period and profitability. This implies that the longer a firm makes the payment to its creditors, the more profitable it is. Thirdly the cash conversion cycle decreases it will lead to an increase in profitability of the firm, and managers can create a positive value for the shareholders which indicates that it has been maintained. The regression analysis showed the value for the R-squared in the model is 0.584, i.e., 58.4% of the variation in the dependent variable Net Profitability is explained by the independent variables.
Rafathunnisa syeda *.
*Address all correspondence to: [email protected]
An attempt has been made in this empirical study to know the impact of working capital management on profitability, both the factors are important concerns of management. If working capital is not managed perfectly it will reduce the liquidity of the company and ultimately effects profitability.
The working capital should be maintained at a desired level depending upon the size of the firm, excessive working capital leads to the unnecessary accumulation of inventories causing losses and wastages. The large debtors indicate the defective credit policy which might lead to bad debts. On the other hand, with the inadequate working capital, the firm will not be in a position to pay short-term liabilities. The firm may not be able to pay its day-to-day expenses which creates inefficiencies and reduces profits.
The success of any business depends on its profitability, liquidity, and solvency. Liquidity plays an important role in the successful running of a business. The crucial functions of financial managers to ensure the liquidity of a firm, that it must be in a position to meet its short-term obligation without which it cannot survive. The working capital which consists of current assets and current liabilities which measure the liquidity has been chosen as the main independent variable to study its relationship with the profitability. The collection period, payment period, inventory days and cash conversion cycle has been used as a measure of working capital.
Many prior studies have been conducted to measure the relationship between working capital and profitability as examined by Azhar [ 1 ]. The impact of liquidity and management efficiency on the profitability of select power sectors using different ratios as independent variables, where debtor turnover ratio, collection efficiency, and interest coverage showed a significant impact. Rathiranee and Sangeetha [ 2 ] examine the impact of working capital on financial performance in select trading firms where the regression analysis results showed that the high investment in inventories and receivables is associated with lower financial performance i.e., Return on Assets (ROA). They found a negative relationship between Return on Assets and Inventory turnover and Cash conversion cycle for the trading firms listed in Colombo Stock Exchange. Mansoori and Muhammad [ 3 ] have studied the same picture with the evidence from Singapore found that Management performance would be improved by managing working capital efficiently. Their results demonstrate that firm’s profitability is increased by decreasing in receivable conversion period and inventory conversion period. Saradhadevi found in her study that there exists a highly significant negative relationship between the profitability and cash conversion cycle and a highly significant positive relationship between the time it takes the firm to pay its (Average payment period) which implies the longer a firm takes to pay its creditors the more profitable it is.
Keeping in view the above scenario the present study is designed to know the direct impact of working capital on profitability by choosing the days of collection, days of payment, days inventory converts to sales and finally the cash conversion cycle.
Many studies have been conducted for manufacturing companies, cement and textile companies, oil and gas companies only a few have been focused on trading companies. Hence the present study has its focus on working capital management and its impact on profitability in relation to trading sector.
Working capital management and profitability [ 4 ]: This study aims to find out the impact of working capital management on profitability. Return on assets, Current ratio, debt to equity ratio, operating profit to debt ratio, and inventory turnover ratios of the firms are the variables that are used in this study carried out for electrical equipment firms listed on Karachi stock exchange for a period of six years i.e. 2007–2012. Regression analysis was applied to the data. Normality and linearity test was also applied. Results showed significant positive results. T-test is applied to see for individual variable significance, it tells that each variable is significant. It is concluded that working capital management has positive significant impact on profitability of the firms.
The relationship between working capital management and profitability [ 5 ]: A sample of 67 companies is used for a period of ten years (2007–2016). Quantitative method using multiple linear regression and pooled data set is used for analysis. The study investigates the relationship between working capital management and profitability in non-financial companies listed in the Saudi Stock Exchange. The results indicate a positive relationship between working capital management and profitability. The results indicate a weak linear relationship between WCM and profitability, indicating that no single constant practice or strategy would suit every company, managers should identify the optimal level of working capital that suits their company’s situation. The results showed a statistically positive relationship between WCM, measured by CR, RCP, APP, INP, and profitability; however, there was a weak linear relationship.
Working capital management and firms’ profitability: Dynamic panel data analysis of manufactured firms [ 6 ]: This paper examines the impact of working capital management on firm’s profitability performance of manufacturing firms by using not only static models such as ordinary least square (OLS), fixed and random effects but also dynamic models difference generalized method of moments (GMM) and system generalized method of moments (SGMM) over the period from 2007 to 2018. The results show that inventory conversion period (ICP) and payable deferral period (PDP) have a positive relationship with return on asset while the cash conversion cycle (CCC) has a negative effect on return on assets.
Working capital management and profitability: Empirical evidence [ 7 ]: Empirical findings suggest that granting longer extensions to customers does not affect profitability. The results of the other variables showed a negative relationship with the profitability of the companies, suggesting that the investment in inventories and the obtaining of extensions from suppliers determine additional costs that negatively impact profitability. This paper examines the working capital management policies in 105 manufacturing companies in the Czech Republic for five years, from 2014 to 2018.
The relationship between working capital management and profitability: A case study of cement industry in Pakistan [ 8 ]: Ikram ul Haqq, Muhammad Sohail, Khalid Zaman and Zaheer Alam examines the effect of working capital on profitability for the period of six years from 2004 to 2009 by using the data of fourteen companies in the cement industry. The ratios relating to capital management have been selected and computed for the study. The main objective of the study was to find whether financial ratios affect the performance of the firm in the special context of cement industry in Pakistan. They found that the ROI is negatively correlated with the current assets to sales ratios and cash turnover ratio while ROI is positively correlated with the current ratio, liquid ratio current assets to total assets ratio, debtors turnover ratio, inventory turnover ratio, and credit turnover ratio.
Relationship between inventory management and profitability: An empirical analysis of Indian cement companies [ 9 ]: Dr. Ashok Kumar Panigrahi has discussed the importance of inventory management practices of Indian Cement Companies and their impact on working capital efficiency over a period of ten years from 2001 to 2010. The study uses Regression analysis. The findings indicate that there exists a significant negative linear relationship between inventory conversion period and profitability. It was also found that when profitability increases with the decrease in the financial debt ratio. Further, it showed a positive relationship between profitability and firm size, as the profitability increases with an increase in firm size. Lastly, the relationship between the current ratio and profitability was negative.
Effects of working capital management on profitability: The case for selected companies in Istanbul stock exchange (2005–2008) [ 10 ]: The study was carried out by Hasan Ajan Karaduman, Halil Emre Akbas, Arzu Ozsozgun, and Salih Durer with the aim to provide some empirical evidence on the effects of working capital management on profitability for a sample of 140 selected companies listed in the Istanbul Stock Exchange (ISE) for the period of 2005–2008. The return on assets of the sample companies increases with a decrease in the number of days accounts receivable, accounts payable, and a number of days of inventory. Also, the reduction in the cash conversion cycle results in higher returns on assets. Furthermore, the results of control variables like the size have a positive effect on profitability while the debt ratio negatively affects the profitability.
Working capital management in indian oil and gas industry—A case study of Reliance Industries Ltd. [ 11 ]: Sankar Thappa has used liquidity ratios to assess the significance of working capital for a period of ten years 2004–2013.The analysis of liquidity ratios, liquidity position, item-wise analysis of components of gross working capital and liquidity ranking have been done. The results showed that the coefficient of correlation between the profitability ratio compared to the current ratio, working capital turnover ratio, and inventory turnover ratio indicates the low degree of positive correlation whereas the coefficient of correlation between profitability ratio compared to the quick ratio (liquid ratio) and absolute liquid ratio indicates that there is a low degree of negative correlation. The overall working capital position is not very much satisfactory.
Relationship between working capital management and firm profitability manufacturing sector of Pakistan [ 12 ]: Muhammad Safdar Sial and Aqsa Chaudry measure the relationship between working capital management and firm profitability in the manufacturing sector with a sample of 100 firms covering a period of ten years from 1999 to 2008. The coefficient of size was positive which means that the bigger the size have more profitability as compared to firms of smaller size. The debt ratio has been used for leverage which showed a significant negative relationship with Return on Asset which means increase in leverage adversely affect on return on assets. The results show that there is a strong negative relationship between variables of working capital management and profitability of the firm which means as the cash conversion cycle increases it will lead to a decrease in profitability of the firm.
Effect of working capital management on profitability by Asif Iqbala and Zhuquan Wang [ 13 ]: They found a diverging effect of working capital management on the profitability of manufacturing firms of Pakistan. They suggest that “paying full attention to the cash conversion cycle” has enormous effect on working capital. Minimizing the inventory level frees the capital for other use.
Relationship between working capital management and profitability by Puteri Shahirah Binti Ghazal [ 14 ]: This paper is an evidence from the UAE market focusing on real estates and construction companies from the Abu Dhabi market. The finding of this study presented that there is a negative relationship between cash conversion cycle and profitability; longer the CCC, the profitability decreases. Another finding showed that the amount of payable days is negatively related to profitability.
The effect of working capital management on profitability [ 15 ]: A sample of three (3) manufacturing companies listed on the Dar es Salaam Stock Exchange (DSE) is used for a period of ten years (2002–2012). They found negative relationship between liquidity and profitability showing that as liquidity decreases, the profitability increases, average collection period and profitability indicating that a decrease in the number of days a firm receives payment from sales affects the profitability of the firm positively.
To analyze relationship between working capital management and profitability [ 16 ]: This paper basically analysis the relationship between working capital and profitability of the Indian IT Company (TCS). This Study shows negative relationship of inventory turnover ratio with ROA excluding and including Revaluation which shows that with the inventory turnover the firm should increase its return on assets. And also study shows negative relationship of debtor turnover ratio with Return on Capital Employed.
The main objective of any business is to earn profit and manage the funds efficiently and effectively which has direct impact on profits. So, working capital is the major constituent to measure liquidity. This study examines the association between the profitability and working capital using the data of 15 US trading companies for the period of 2015 to 2019.
Working capital is an important issue during financial decision making. The crucial part in managing working capital is required to maintain its liquidity in day-to-day operation for the smooth running of business and meeting its obligations in time. Thus, working capital is selected as one of the independent variables to know that how it effects profitability.
H1: There is a significant relationship between Working Capital Management and profitability.
H2: Working capital management has strong impact on profitability.
Keeping in view the above studies the following objectives have been outlined for the present study.
To study the relationship between profitability and working capital management.
To examine the impact of average collection period, average payment period, inventory turnover days and cash conversion cycle on profitability.
The choice of the variables for the present study is influenced by the previous studies on working capital management. They include dependent, independent and some control variables. The profitability in terms of Return on assets, Gross profit ratio, Operating profit and Net income are taken as dependent variable in previous studies.
The dependent variable is the one which is affected during the experiment, for the present study profitability is taken as dependent variable i.e., in terms of Net Income. The independent variable is the one which effects the dependent variable. Average collection period, cash conversion cycle, average payment period, inventory turnover ratio, current ratio, liquid ratio, etc. were taken as independent variables in previous studies. For this study the independent variables are the average collection period, average payment period, inventory turnover days and cash conversion cycle. The study aims at to find out the association between the variables through different statistical analysis ( Table 1 ).
Variables | Type | Measured | Abbreviations used |
---|---|---|---|
Net income | Dependent variable | Net Income/Net sales*100 | NI |
Average collection period | Independent variable | Account receivable/net sales*365 | ACP |
Average payment period | Independent variable | Account payable/Cost of goods sold*365 | APP |
Inventory turnover days | Independent variable | Inventory/Cost of goods sold* 365 | ITD |
Cash conversion cycle | Independent variable | ACP+ITD-APP | CCC |
Showing the key research variables.
The following equation is used to estimate the impact of working capital on profitability.
NI (it) = profitability of the firms at time 5 years, i = 15 firms.
β0 = the intercept of an equation.
β = coefficients of independent variables.
T = time 5 years 2015–2019.
Average collection period ACP.
Average payment period APP.
Inventory turnover days ITD.
Cash conversion cycle CCC.
In the above general equation, the Profitability is the dependent variable, and it is influenced by the independent variables i.e., ACP, APP, ITD and CCC.
The main source of data is the S&P Capital IQ website. Many studies have been conducted to examine the relationship between the financial performance and working capital management. These studies have been done relating to the cement companies, trading companies, manufacturing companies, pharmaceutical companies and only a few have been carried out about trading companies. So for the present study sample is taken from trading companies.
The present study aims at to provide some empirical evidence of impact of working capital management on profitability for a sample of 15 trading companies for the period of five years from 2015 to 2019. These companies are randomly selected from all listed companies in the New York Stock Exchange (NYSE). The sample companies includes: 1) Applied Industrial Technologies Inc. (AIT), 2) DXP Enterprises Inc., 3) Eco Shift Power Corp. (ECOP), 4) EVI Industries Corp., 5) General Finance Corp. (GFN), 6) Gypsum Management and Supply Corp. (GMS), 7) W.W. Grainger (GWW), 8) H&E Equipment Inc. (HEES), 9) HD Supply Inc. (HDS) 10) Houston Wire and Cable Company (HWCC), 11) Huttig Building Products Inc. (HBP) 12) Kaman Corporation (KAMN), 13) MRC Global Inc., 14) MSC Industrial Direct Co. Inc. (MSM), 15) ProShares Ultra Health Care (RXL).
The Net Profitability is taken as the dependent variable and the average collection period (ACP), average payment period (APP), inventory days converted to sales (ITD) ad cash conversion cycle (CCC) are considered as independent variables.
The analysis of data is done using descriptive statistics, correlation matrix and regression analysis.
The Net profitability for these companies ranges from −7.308 to 31.895 with a mean of 3.637 and standard deviation 5.85 which shows high variance.
ACP ranges between 18.57 and 133.28 days with an average of 51 days and standard deviation of 16.88 signifying very high variability across the companies.
The APP ranges between 9.6 and 79.69 with an average of 36.76 and standard deviation of 14.62. The minimum time taken to make the payment is 9 days which is unusual.
The ITD ranges between 30.62 and 139.53 with an average of 71.24 and standard deviation of 26.05. The maximum time taken to convert inventory into sales is 139 days which is a very large time period to convert inventory into sales.
The CCC ranges between 18.02 and 193.18 with an average of 85.85 and standard deviation of 36.63. The maximum time taken for cash conversion cycle is 193 days which is a large time taken to convert cash.
Variable | Mean | Standard deviation | Minimum | Maximum |
---|---|---|---|---|
Net profitability | 3.637 | 5.859 | −7.308 | 31.895 |
ACP | 51.38 | 16.886 | 18.576 | 133.28 |
APP | 36.766 | 14.617 | 9.61 | 79.698 |
ITD | 71.24 | 26.05 | 30.62 | 139.53 |
CCC | 85.85 | 36.63 | 18.024 | 193.18 |
Descriptive statistics of 15 companies for the years from 2014 to 2019.
Correlation analysis is used to measure the degree of association between different variables under consideration. Correlation matrix of all variables included in the analysis is presented in Table 3 which is calculated based on data of 15 trading companies for a period of five years 2015 and 2019.
NP | ACP | APP | ITD | CCC | |
---|---|---|---|---|---|
NP | 1 | ||||
ACP | −0.353391495 | 1 | |||
APP | 0.127879206 | 0.25544055 | 1 | ||
ITD | 0.225071917 | 0.20822956 | −0.140703 | 1 | |
CCC | −0.271955653 | 0.50715839 | −0.381359 | 0.8633495 | 1 |
Correlation matrix of 15 companies for the year 2015 and 2019.
An attempt has been made to find the relationship between profitability and WC, for this purpose Pearson’s coefficient of correlation analysis is done. As indicated in the above studies there exist a negative correlation between the profitability and the collection period, the lower the average collection period higher will be the profitability. The correlation between average payment period and profitability is 0.127 which shows a positive relationship if there is an increase in payment period it leads to an increase in profitability. There exist a negative correlation between profitability and the cash conversion cycle is −0.271 which indicates an increase in collection period leads to increase in CCC and vice versa and ultimately effects profitability The correlation between inventory conversion days and profitability is positive which is beyond expectation. There exists a negative correlation between cash conversion cycle and average payment period.
It is recommended that the companies should avoid an increasing cash conversion cycle because it means that the business is becoming more operating inefficient, locking more and more cash into its processes. They should maintain a lowest cash conversion cycle compared to their peers, or at least a decreasing one. A decreasing CCC represents a more efficient company that converts its inventories faster as well as gets paid faster and probably is paying its suppliers later thus, holding cash for more time ( Table 4 ).
Regression statistics | |
---|---|
Multiple R | 0.782 |
R square | 0.584 |
Adjusted R square | 0.425 |
Standard error | 0.515 |
Observations | 75 |
Regression results of 15 companies for the year 2015 to 2019.
The regression analysis showed the value for the R-squared in the model is 0.584, i.e., 58.4% of the variation in the dependent variable (NI) is explained by the independent variables working capital of the model, which is represented by CCC, APP, ACP, and ITD and 42% is affected by other factors.
The study is carried out for a sample of 15 trading companies for the period of five years from 2015 to 2019. These companies are randomly selected from all listed companies in the New York Stock Exchange (NYSE).
This study examined the relationship between Net Profitability and several variables of working capital management such as average collection period, average inventory turnover in days, average payment period and cash conversion cycle. The results showed that there exist a negative relationship between the profitability and the average collection period, the lower the average collection period higher will be the profitability. The correlation between average payment period and profitability is 0.127 which shows a positive relationship if there is an increase in payment period it leads to an increase in profitability. It is found that the cash conversion cycle decreases it will lead to an increase in profitability of the firm, and managers can create a positive value for the shareholders which indicates that it has been maintained.
The results of this study show that there is a strong relationship between the working capital and profitability of the firms. It means if the financial managers keep an eye on the liquidity it will lead to profitability. So, it is recommended that Companies should always maintain a sound collection policy and it is further suggested that managers can create value for their shareholders by reducing the number of days accounts receivable, increasing the number of days accounts payable and inventories to a reasonable minimum.
The hypotheses is accepted for working capital management that it has strong impact on profitability. There is a significance relationship between Working Capital Management and profitability. The study has examined the impact in terms of average collection period, average payment period, inventory turnover days and cash conversion cycle on profitability.
Furthermore, On the basis of the above analysis the results can be further strengthened if the firms manage their working capital in more efficient ways. Management of Working capital means the management of current assets and current liabilities. If these firms efficiently manage their cash, accounts receivables, accounts payables, and inventories, this will ultimately increase profitability of these companies.
The study is carried out for a period of five years only i.e., 2015 to 2019.
The study is based on secondary data collected from the website of S&P Capital IQ.
The study is carried out about 15 Trading companies.
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Edited by Nizar Alsharari
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Financial Innovation volume 8 , Article number: 72 ( 2022 ) Cite this article
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This study investigates the possible nonlinear relationship between working capital and credit rating. Furthermore, it examines the relationship between the three components of working capital (inventory, accounts receivable, and accounts payable) and a firm’s credit rating. Employing data for U.S listed firms for the period between 1985 and 2017, the results of our ordered probit model show a nonlinear relationship between working capital and its components and credit rating. Finally, we find that the deviation from the optimal working capital adversely affects the credit rating. The results of this study are of significant importance for policy makers, managers, decision makers, and credit-rating agencies, as they help highlight the importance of working capital management for a firm’s credit rating.
In light of the 2008 financial crisis, credit-rating scores (CRSs) released by credit-rating agencies have grown in importance (Hung et al. 2017 ). Credit-rating agencies play a vital role in capital markets by reducing the moral hazard problem. In addition, credit ratings help investors assess the creditworthiness of issuers and the financial securities issued by them (Lee et al. 2021 ). Furthermore, credit ratings are used as a benchmark based on which investors manage their portfolios. Finally, they play an important monitoring role, as they may require firms with rating deteriorations to take corrective actions to minimize these deteriorations (Huan and Mohamed 2021 ). Additionally, CRSs have become a crucial tool that helps investors in their investment decision-making process, as they help investors identify risky assets, price their credit, and allocate their capital more efficiently (Amato and Furfine 2004 ). Investors are highly concerned about borrowers’ ability to fulfil their obligations (Haspolat 2015 ). Moreover, Bauer and Esqueda ( 2017 ) point out that banks rely on credit rating scales to compensate for information deficits when making loan decisions. Thus, a considerable amount of literature has been published on the impact of factors such as firm-specific characteristics [Return on Assets (ROA), size, and liquidity], corporate social responsibility (CSR), and operational leanness on the corporate credit rating (Attig et al. 2013 ; Hung et al. 2013 ; Bendig et al. 2017 ; Dong et al. 2021 ). However, to our knowledge, no previous study has investigated the impact of working capital management (WCM) on a firm’s credit rating. A key aspect of a WCM decision is its impact on a firm’s risk, return, and valuation (Smith 1980 ). Many researchers have attempted to investigate the impact of WCM on firms’ financial performance (e.g., Aktas et al. 2015 ; Jose et al. 1996 ; Shin and Soenen 1998 ; Deloof 2003 ; García-Teruel and Martínez-Solano 2007 ). These studies have mainly focused on the impact of WCM on a firm’s profitability performance. The interesting point here is the consensus that maintaining a high level of net working capital (NWC) reduces a firm’s risk and profitability.
The results of these previous studies led us to take the research on this topic a step further and investigate the impact of WCM on a firm’s credit rating. Understanding this relationship is of high importance for corporate managers in their quest for external financing, especially after the 2008 financial crisis (Hung et al. 2013 ).
One would expect that maintaining a high level of working capital would enhance a company’s credit rating since it reduces risk. However, is this always the case? Besides reducing risk, previous studies have shown that holding a high level of working capital reduces profits. This particular observation raises a major concern about the effect of low profits on a company’s ability to cover interest payments, especially since a company’s reliance on external financing would increase as the level of working capital increases (Kieschnick et al. 2013 ). This concern may indicate that maintaining a high level of working capital may enhance a company’s credit rating for a certain period but become harmful thereafter. This argument suggests a concave relationship between WCM and credit rating. Furthermore, this concave relationship postulates that firms could have an optimal working capital ratio to reduce risks and improve credit ratings. Therefore, we expect a positive or negative deviation from the optimal working capital to have an adverse effect on the evaluation of a firm’s risk and ultimately impact the firm’s credit rating.
To this end, this study distinguishes itself from previous studies in the following aspects: first, it examines the possible concave relationship between WCM and credit rating; second, it conducts a deeper analysis by investigating the impact of three important components of working capital, namely inventory (INV), accounts receivable (AR), and accounts payable (AP), on a firm’s credit rating; and finally, it investigates the impact of deviation from the optimal working capital on a firm’s credit rating. This study attempts to answer the following questions: (1) Does WCM and its components affect the credit rating? (2) If so, what is the nature of this relationship? Finally, (3) does deviation from optimal working capital affect a firm’s credit rating?
Utilizing annual panel data of U.S. listed firms from Wharton Research Data Services (WRDS) merged with Center for Research in Security Prices (CRSP)/Compustat files for the period between 1985 and 2017, we find evidence to draw the following conclusions. First, there exists a positive relationship between WCM and credit rating. Second, we find that high investments in working capital have an inverse impact on CRSs; thus, our results support the non-linear relationship between WCM and credit rating. Third, there exists a nonlinear relationship between the components of working capital (inventory and accounts receivable) and CRSs, while accounts payable have a negative relationship with credit scoring. Finally, the results show that firms have an optimal level of working capital and deviation from this target harms their credit rating.
The rest of this paper is organized as follows: “ Literature review and hypotheses development ” section discusses previous studies on WCM and credit ratings; “ Methodology ” section presents the study methodology and research design; “ Data and descriptive statistics ” section presents the data and descriptive statistics sample and data resources; “ Empirical results ” section presents the empirical results; and “ Concluding remarks ” section concludes the paper.
In this section, we discuss the relevant literature on WCM and credit ratings, in addition to the development of the research hypotheses.
According to Lewellen et al. ( 1980 ), decisions regarding working capital have no impact on a firm’s value in a perfect capital market. However, because of the nonexistence of a perfect capital market and the presence of an optimal level of each component of working capital, such as accounts receivable (Nadiri 1969 ; Emery 1984 ), inventories (Ouyang et al. 2005 ), and accounts payable (Nadiri 1969 ; Abuhommous 2017 ), one would expect firms to have a target or optimal level of working capital. Aktas et al. ( 2015 ) provide evidence for the presence of an optimal level of working capital.
The WCM concept pertains to how firms manage their current assets and liabilities, and this policy comprises two elements: (1) the level of investment in current assets and (2) the means of financing current assets. When selecting the most suitable policy, firms try to obtain an optimal level of working capital, depending on the trade-off between risk and return.
Focusing on the second element, firms may adopt one of three working capital strategies, namely that of a conservative, hedging, or aggressive strategy. In the conservative approach, firms try to maintain high levels of working capital (high investment in working capital), as they rely more on long-term financing compared with short-term financing. This strategy decreases both the risk and return of the firm due to the higher need for expensive external financing, which harms the firm’s profitability. In this regard, Baños-Caballero et al. ( 2014 ) state that a low level of working capital enhances a firm’s performance because of the lower need for expensive external financing. Furthermore, an increase in working capital may result in an increase in the opportunity cost of cash locked-up in accounts receivable and inventories (Tauringana and Afrifa 2013 ). However, a firm may adopt an aggressive working capital strategy by using more short-term sources of funds to finance its investments, which indicates low investment in working capital. By adopting such a strategy, both risk and returns increase. Finally, in the hedging strategy (matching strategy), the temporary amount of short-term assets is met with short-term financing, and the permanent amount of short-term assets is financed by long-term financing resources; thus, the investment in working capital may increase or decrease according to the firm’s activity.
Several attempts to investigate the impact of WCM on a firm’s profitability (e.g., Jose et al. 1996 ; Shin and Soenen 1998 ; Deloof 2003 ; García-Teruel and Martínez-Solano 2007 ) suggest that there exists a linear relationship between a firm’s investment in working capital and its profitability. The findings of such studies indicate that the lower the investment in working capital, the higher the profitability. Mohamad and Saad ( 2010 ) find a negative impact of working capital elements, such as cash conversion cycles (CCCs), current ratios, current-asset-to-total-asset ratios, current-liabilities-to-total-asset ratios, and debt-to-asset ratios, on firm performance, suggesting the importance of WCM in enhancing performance at both the accounting and market levels.
Kieschnick et al. ( 2013 ) investigate the relationship between net operating WCM and firm value. They find that for average firms, every additional dollar held in cash is worth more for shareholders than investing that dollar in net operating working capital. They add that, for the average firm, investing more in trade credit would add more value for shareholders than investing in inventory, which indicates the high importance of trade credit as part of WCM for shareholder wealth. In a more recent study, Aktas et al. ( 2015 ) document a nonlinear relationship between excess NWC and stock performance, finding that this relationship is negative for firms with positive excess NWC and positive for firms with negative excess NWC. These findings further support the idea of an optimal level of NWC, and firms that reach that level increase their stock value.
Another stream of research has focused on the impact of WCM on firm risk. For instance, maintaining a high working capital might lead a firm to rely more on long-term financing, which would result in a higher interest cost. Moreover, high working capital increases a firm’s opportunity cost (Kieschnick et al. 2013 ). On the other hand, adopting excessively aggressive WCM may increase the risk of stockouts, input price fluctuations, and supply costs (e.g., Blinder and Maccini 1991 ; Fazzari and Petersen 1993 ; Corsten and Gruen 2004 ). Therefore, the negative relationship between NWC and firm performance may be due to an increase in firm risk following a decrease in NWC.
A firm’s credit rating is a statistic that summarizes a firm’s creditworthiness by considering several elements of the firm’s financial characteristics, such as debt ratio, priority and maturity structure of the firm’s debt, and the volatility of the firm’s cash flows (Bali and Hovakimian 2009 ).
The corporate credit rating has grown in importance especially after the 2008 financial crisis (Hung et al. 2013 ). Therefore, Amato and Furfine ( 2004 ) assert the important role of credit rating analysis in financing and investment decisions, such as in pricing credit, determining risky assets, and asset allocation. Furthermore, investors are highly concerned about borrowers’ ability to fulfil their obligations (Haspolat 2015 ). In this regard, Bauer and Esqueda ( 2017 ) point out the importance of credit rating scales in helping banks overcome information deficits when making loan decisions.
A considerable amount of the literature has been published on firms’ credit ratings. These studies can be classified into two streams. The first stream includes studies on the factors that influence the credit rating. The second concerns the impact of the credit rating on a firm’s decision-making. Attig et al. ( 2013 ) study the impact of CSR on a firm’s credit rating and find that firms with good social performance are rated relatively high. They also conclude that CSR investments can reduce financing costs owing to high credit ratings. Hung et al. ( 2013 ) offer evidence on the effect of firm-specific characteristics on the credit rating and find that ROA, size, Earnings Before Interest, Taxes, Depreciation, and Amortization (EBITDA), and interest coverage are positively related to credit rating. However, the debt ratio and ratio of cash to current liabilities are negatively related to credit rating. In a large longitudinal study, Bendig et al. ( 2017 ) investigate the impact of operational leanness [relative inventory leanness and relative property, plant, and equipment (PPE) leanness] on a firm’s credit rating and find a concave positive relationship between inventory leanness and credit rating and a negative and concave relationship between PPE leanness and credit rating.
Turning to the impact of a firm’s credit rating on decision-making, Kisgen ( 2006 ) examine the relationship between credit ratings and capital structure decisions. He finds a negative relationship between a change in credit rating status and reliance on debt. As firms near a change in credit rating status (upgrade or downgrade), their reliance on debt decreases. Another study finds that firms pursue real earnings management activities when they have an upcoming credit rating change; however, just prior to the change, they reduce their discretionary accruals. Moreover, the study concludes that real activities management and credit rating upgrades are positively related, whereas there is no significant relationship between real activities management and credit rating downgrades (Kim et al. 2013 ).
Since 1941, the Standard & Poor’s (S&P) rating agency has assigned its CRSs based on two broad categories of risk: financial risk and business risk. In the business risk category, S&P is concerned with the firm’s ability to generate sufficient cash flow to cover operating revenues. However, in the financial risk category, the focus is on the firm’s ability to manage its financial leverage and debt.
As mentioned earlier, maintaining high levels of working capital reduces a firm’s risk and returns. To this point, one would expect that firms with high levels of working capital would have higher CRSs because of the low risk of such firms. However, considering the above two risk categories may change the rules. For instance, Baños-Caballero et al. ( 2012 ) suggest that excessive investment in working capital may negatively impact a firm’s operating performance, consequently reducing the firm’s cash inflows (Deloof 2003 ; García Teruel and Martínez-Solano 2007 ; Shin and Soenen 1998 ). Such studies conclude that reducing the CCC and inventory amount would lead to higher operating performance. Thus, over time, firms that suffer a decrease in their operating performance due to their high levels of working capital would be less able to repay interest payments. Kieschnick et al. ( 2013 ) suggest that these payments would be high for firms with high levels of working capital due to their high reliance on external financing, which would lead to higher bankruptcy costs according to Kieschnick et al. ( 2013 ). This may result in lower CRSs for such firms. Shin and Soenen ( 1998 ) report a good example on this point: They mention that despite the similarity of two firms in capital structure, namely Kmart and Walmart, Kmart faced higher financial troubles than Walmart due to its high NWC relative to sales, which led Kmart to close 110 stores in 1994, and in 2002 the firm filed for Chapter 11 bankruptcy protection. This example supports the argument that the relationship between working capital level and credit rating is concave. To this end, one may expect that neither over-investment in working capital nor an aggressive working capital policy would be favorable for a firm’s credit rating. This is because increasing investment in working capital is preferable for credit rating (due to its role in reducing risk) to some point, after which the rating starts to drop (due to its negative impact on cash flows). Consequently, we hypothesize a concave relationship between WCM and credit rating.
Furthermore, the above discussion leads to the conception that firms should efficiently manage their working capital by maintaining it at an optimal level. According to Gill et al. ( 2019 ), efficient WCM positively impacts the bond quality rating. Therefore, we conjecture that holding working capital on target enhances a firm’s credit rating.
In “ Estimation framework ” section, we develop a regression model to examine whether WCM affects credit rating decisions. In “ The concave relationship between NWC and credit rating ” and “ Components of working capital and credit rating ” sections, we expand our analysis to examine the nonlinear relationship between the working capital level and its components (i.e., accounts receivable, inventory, and accounts payable) and credit rating. In the final section of the analysis, we attempt to determine the optimal working capital level and examine whether deviation from the optimal working capital adversely affects the credit rating score.
In this section, we augment the previous models of Ashbaugh-Skaife et al. ( 2006 ), Alissa et al. ( 2013 ), Attig et al. ( 2013 ), Oikonomou et al. ( 2014 ), and Bendig et al. ( 2017 ) by including our main independent variable (WCM) in the credit rating model. We use an ordered probit regression, where we add the working capital proxy to the model, as follows:
where RATING is the S&P credit rating for firm i at time t . We consider the following to be determinants of credit rating: NWC ratio, log of assets, firm’s leverage, interest coverage ratio, whether the firm has losses (indicated by a dummy variable), whether the firm has fixed assets in its asset structure (measured by capital intensity), whether the firm has subordinate loans, and whether the firm’s external auditor is considered as one of the “big four” auditing firms (indicated by a dummy variable). We present the definitions of these variables in Table 2 . We also include IndustryEffects to control for differences across industries and YearEffects to control for the time-specific effect, which captures economic factors that affect all firms in the same year but vary over time, and ε i,t is the error term.
In this section, we present the key variables included in the estimated model, including their definitions and measurement.
Credit ratings are based on opinions about credit risk and are considered a quantified forward-looking assessment of the debt issuer’s creditworthiness, which measures firm’s ability to meet its financial commitment in terms of time and fullness. They can also be used to measure the likelihood of default and can thus be assigned to individual debt issues or, as an overall credit rating, to corporations, governments, and municipalities, or to a sovereign government (Standard and Poor’s 2022 ). Following the literature (e.g., Kisgen 2009 , 2006 ; Hovakimian and Li 2009 ; Alissa et al. 2013 ) we use Standard & Poor’s Long-Term Domestic Issuer Credit Rating (RATING), a long-term scale for firms according to their overall creditworthiness, in which the rating range is assigned from “AAA” for an extremely strong obligor (highest rating) to “D” for an obligor in default (lowest rating). Consistent with Attig et al. ( 2013 ) and Bendig et al. ( 2017 ), we transform the credit rating to an ordinal scale for the purpose of our regression. Thus, we assign eight values starting from one for a “CC” rating to eight for an “AAA” rating (see Table 1 ). As a robustness check, we follow Alissa et al. ( 2013 ) and Bendig et al. ( 2017 ), who measure credit rating based on 20 micro rating classes. We calculate MICRORATING and transform credit rating to an ordinal scale with 20 categories, ranging from the value of 1 for the “CC” class to 20 for the “AAA” class. Footnote 1 Table 1 reports the number of firm-year observations for each credit-rating category. The number of firms per year ranges from 98 to 5265 (Table 2 ).
Our main independent variable that measures a firm’s WCM investment is based on the literature (e.g., Shin and Soenen 1998 ; Aktas et al. 2015 ; Kieschnick et al. 2013 ). Following these works, we use the net operating working capital to sales ratio (NWC); the dependent variable is measured as (INV) plus (AR) minus (AP), all divided by total sales. Furthermore, as a robustness check, we follow Baños-Caballero et al. ( 2012 ) and measure working capital policy as (inventory/cost of sales) × 365 + (accounts receivable/sales) × 365 − (accounts payable/cost of sales) × 365; we call this the CCC.
A firm’s characteristics are included in the credit rating regression model, based on the literature (e.g., Ashbaugh-Skaife et al. 2006 ; Kisgen 2006 ; Bendig et al. 2017 ; Alissa et al. 2013 ; Attig et al. 2013 ). With respect to firm size (SIZE), we expect large firms to have more leverage because of the high volume of information available about the firm; usually, large firms tend to have less asymmetric information in the market. We use the natural logarithm of total assets to measure size. Therefore, larger firms are expected to have higher credit ratings than smaller firms. Firm’s leverage (LEV) has an inverse relationship with credit rating, since firms with high leverage are more likely to suffer from financial crises and bankruptcy probability increases. We use the ratio of long-term debt-to-total-assets as an indicator of a firm’s leverage. Interest coverage ratio (COVERAGE) is used as a proxy for a firm’s default risk, which demonstrates a firm’s ability to pay its debt interest; the more able the firm is to pay its debt interest, the more likely the firm will receive a higher credit rating. This ratio is calculated by dividing the operating income before depreciation by interest expenses. A firm’s losses (LOSS) are an indicator of the firm’s likelihood of default; unprofitable firms tend to have a high probability of bankruptcy and therefore have a lower credit rating. Firm’s capital intensity (CAP_INTEN) is included as a control variable because firms with high capital intensity present a lower risk for debt providers; thus, firms with high capital intensity are expected to have a higher credit rating. This variable is measured using the ratio of property, plant, and equipment to total assets. Subordinate debt (SUBORD) is included as a control variable to capture the differences in firms’ debt structure; firms with a debt structure that includes subordinated debt are considered riskier and are expected to have a lower credit rating. Bendig et al. ( 2017 ), Ashbaugh-Skaife et al. ( 2006 ), and Alali et al. ( 2012 ) find an inverse relationship between subordinate debt and credit rating. We measure subordinate debt using a dummy variable that takes the value of one if the firm has subordinate debt and zero otherwise. We also include external auditors to control for their role in monitoring a firm’s actions (Alissa et al. 2013 ); BIG4 is the variable used as a proxy for corporate governance, which reduces opportunistic managerial behavior (Bhandari and Golden 2021 ).
This section presents the details of the selection criteria and sample descriptive statistics. Our sample is drawn from the population of U.S. listed firms, and to serve our study aim, we select firms that have a credit rating. Thus, we exclude any firms with missing values for credit rating or working capital. Consistent with previous studies (e.g., Hovakimian and Li 2009 ; Attig et al. 2013 ; Bendig et al. 2017 ), this study utilizes annual panel data of listed firms from WRDS merged with CRSP/Compustat files for the period between 1985 and 2017. Footnote 2 Following the literature, we exclude firms with a standard industry classification (SIC) code between 6000 and 6799. Thus, we exclude all firms operating in the financial sectors. All firms should have positive total assets and net sales, because these variables are used to deflate other variables, and the results may not be consistent when they have negative or zero values. We also only consider observations without missing values. These criteria yield 43,183 firm-year observations.
Table 3 presents the descriptive statistics for the explanatory and control variables. The NWC cycle has a mean of 56.94 days, while the median is 47.70 days. The financial leverage to total assets ratio is on average 33.3% (the median is 29.7%). For unreported data, the number of firm-year observations in which the external auditor ranks among the “big four” (BIG4) accounting firms is 31,603. The total number of firm-year observations for reported loss is 9,955.
Table 4 shows the correlation matrix between the variables of interest; the table shows that the correlation is not very high, the maximum value between LOSS and COVERAGE is 33.3%. Therefore, we can conclude that the multicollinearity problem is not a serious concern.
This section focuses on our regression on the effect of the operating working capital policy on a company’s credit rating. We examine the main hypothesis of this study, namely, that a conservative working capital policy is associated with a high credit rating. A number of different estimates are calculated using our proposed model. This enables more robust results by controlling for firm and industry effects.
Table 5 presents the credit rating regression; the dependent variable is the firm credit rating class of Standard & Poor’s domestic long-term issuer rating (RATING). The variable of interest is NWC. Columns 1 and 2 show the regression results for an ordered probit for NWC and the control variables. In column 2, we add year and industry effects, while in columns 3 and 4, we use MICRORATING as a proxy for credit rating. The relationship between NWC and credit rating is positive and statistically significant in all models in the columns; a P value of < 0.01 is found in both ordered probit regressions. These results do not change when we include the year and industry effects, as shown in column 2. Thus, the results support the hypothesis that investment in working capital (conservative working capital policy) enhances the probability of a firm having a good credit rating. In columns 5, 6, 7, and 8, we use the CCC as a proxy for the dependent variable; the results are also qualitatively similar. Our results support the findings of Blinder and Maccini ( 1991 ), Corsten and Gruen ( 2004 ), and Baños-Caballero et al. ( 2012 ), who find that a firm’s risk increases with an aggressive working capital policy because of the loss of sales due to possible stock-outs, which reduces market share and creates interruptions in the production process, or a loss of customers due to an aggressive accounts receivable strategy. The signs of the control variables are consistent with those in prior research. We find a positive and statistically significant relationship between credit rating and size (SIZE), due to the lower asymmetric information of larger firms; interest coverage ratio (COVERAGE), which indicates that firms with a higher ability to pay their debt interest are less likely to default; capital intensity (CAP_INTEN), which indicates that firms with a higher capital intensity present lower risk since these firms can use their fixed assets as collateral; and the BIG4 coefficient, showing that firms that reduce managerial opportunistic behavior have a better credit rating. However, credit rating has a negative relationship with leverage (LEV), losses (LOSS), and subordinate debt (SUBORD), implying that firms with a high leverage ratio, unprofitable firms, and firms with subordinated debt have a higher probability of receiving a lower credit score.
As a robustness check, we control for the firm-specific effect by using a random-effect ordered probit regression; the results are qualitatively similar (for brevity, the results are not included).
This section examines whether high levels of working capital decrease the credit rating. As postulated by Soenen ( 1993 ) and Baños-Caballero et al. ( 2012 ), high investment in working capital might lead firms to bankruptcy since a high level of inventory incurs costs such as rent, insurance, and security. A high level of accounts receivable is associated with a high probability of a customer default. Specifically, we expect a U-shaped relationship between a firm’s credit rating and investment in working capital. Thus, we examine the nonlinear relationship by including the square of NWC into Eq. ( 1 ). Table 6 presents the results. The results postulate that the coefficient of NWC is positive and its square (NWC 2 ) is negative and statistically significant ( P value < 0.01), and both coefficients are statistically significant. This confirms that an overly conservative working capital policy (high investment in working capital) increases the probability of bankruptcy, which adversely affects a firm’s credit rating. Thus, our results show that when working capital is below the optimal level, the benefits from low production disruption and stimulating sales enhance the credit rating of firms. On the other hand, high investment in working capital might suggest a high risk of uncollectibility and impose high financing costs for these receivables; furthermore, high inventory investment is subject to the risk of obsolescence, spoilage, and greater financing and holding costs.
In the previous section, an NWC proxy is used to examine the relationship between the operating working capital policy and credit rating. Therefore, the positive relationship between NWC and credit rating is due to the management policy of the NWC components. A useful exercise is to examine the relationship between each component of working capital and credit rating. Thus, in Table 7 , we examine the relationship between (AR), (INV), and (AP) and rating. Consistent with our prediction, the results in Table 7 show a positive and significant relationship between credit rating and (INV) and (AR), showing that higher levels of investment in inventory and accounts receivable will increase the probability of a firm receiving a higher credit score. However, the negative and significant impact of (AP) on credit rating indicates that increasing the level of accounts payable on a firm’s balance sheet will increase the likelihood of this firm receiving a lower credit rating. Furthermore, we examine the U-shaped relationship between the components of working capital and credit rating. The coefficients of AR 2 and INV 2 are negative and significant. In addition, AP 2 is negative but not significant. These results indicate that when AR and INV are below the target level, the influence on credit rating is positive. Conversely, above-optimal investment in the components of working capital has a negative relationship with credit rating.
The U-shaped relationship between working capital level and credit rating is confirmed in Table 8 , due to the quadratic relationship between NWC and credit rating. In this section, we extend our regression and attempt to determine whether deviation from the optimal working capital inversely affects the credit rating; the cost of holding an amount of working capital lower than the target (such as stock sold out and losing on credit sales) may send a signal of the firm’s riskiness. In addition, a firm’s bankruptcy cost may increase as the firm increases its investment in working capital. In the first step, we examine the relationship between deviation from the optimal working capital and credit rating. In the next stage, we examine whether the deviation on the upper and lower sides of the optimal NWC adversely affects the firm’s credit rating; the deviation from NWC is interacted with a dummy variable that is equal to one if the deviation is above the optimal deviation. Thus, in the second stage, we examine whether these deviations (i.e., negative or positive) from the target working capital adversely affect the credit rating. We estimate the optimal working capital using the following equation:
Equation ( 2 )—optimal NWC
Equation ( 3 )—deviation from optimal target
To calculate the optimal NWC, we follow the model of Baños-Caballero et al. ( 2014 ), where \(CASH_{it}\) is cash flow, and is calculated by the ratio of depreciation plus net income to total assets; \(LEV_{it}\) is the firm’s leverage, and is calculated by total debt to total assets; \(GROWTH_{it}\) is measured by the percentage change in total revenue; \(TANG_{it}\) is the firm’s investment in fixed assets, and is calculated by the ratio of net fixed assets to total assets; \(PROF_{it}\) is the firm’s profitability, and is measured by earnings before interest and taxes to total assets; and \(SIZE_{it}\) is the firm’s size, and is calculated by the natural logarithm of total assets.
We use the residual from Eq. ( 2 ) and replace the NWC variable with it. The next step is to use the regression residual as a proxy for deviation from the optimal working capital (Tong 2008 ). The residual value can be positive or negative. Therefore, we use the absolute value as a proxy for deviation. We use Eq. ( 1 ) and replace NWC with the absolute value of the residual deviation. We expect the credit rating to be adversely affected as the NWC of the firm deviates from the optimal NWC level; thus, our expectation is \(\delta_{1} < 0\) in Eq. ( 3 ).
The results in Table 8 from estimating Eq. ( 3 ) are based on replacing the variables NWC and NWC 2 in Eq. ( 1 ) with the absolute residual from Eq. ( 2 ). Consistent with our expectations, the findings in Table 8 show that the coefficient of DEV is negative and statistically significant. This confirms that there is a point at which working capital has a positive relationship with credit rating, and moving from this point adversely affects this relationship. Since the results from Eq. ( 3 ) do not indicate whether deviations on both sides have an adverse effect on credit rating, we include in Eq. ( 4 ) a new variable (interaction term), which takes the value of one if the deviation is positive and zero if the deviation is negative. In Eq. ( 4 ), our main interest is to measure how the coefficients of DEV(δ 1 ) and DEV + DEV* above (δ 1 + δ 2 ) affect credit rating. Thus, we expect δ 1 < 0 and δ 1 + δ 2 < 0; this enables us to examine the negative effect of both positive and negative deviation from the optimal working capital on credit rating.
The interaction term DEV* above is defined as a dummy variable that takes the value of one for a positive residual and zero for a negative residual from the estimation in Eq. ( 2 ), in which (δ 1 + δ 2 ) represents the influence of an above-optimal working capital investment level on credit rating. If the deviation from the optimal working capital negatively affects the firm’s credit rating, we expect the value of δ 1 ˂0, and (δ 1 + δ 2 )˂0 if the deviation both above and below optimal working capital have an adverse impact on the firm’s credit rating.
Column 2 of Table 8 shows the results from the interaction term; the results show that the deviation coefficient (DEV) is negative and statistically significant at a conventional level, and the interaction term DEV* above is also statistically significant at the 1% level and positively related to credit rating. As mentioned by Tong ( 2008 ), the interaction term DEV* above may have a positive value because the positive and negative residuals may offset each other. However, the main concern here is that the sum of (δ 1 + δ 2 ) would be lower than zero, and the results, as predicted, are lower than zero; in column 2, (δ 1 + δ 2 ) is (− 0.01 + 0.002) = − 0.008. We also conduct a likelihood-ratio test on the null hypothesis that the sum of the estimates of DEV and DEV* above is zero. The test rejects the null hypothesis at a conventional level, which supports that the deviation on both sides of the optimal working capital has a negative effect on credit rating. A likelihood-ratio test ratio for the joint significance levels of (δ 1 + δ 2 ) is lower than zero and statistically significant at the 1% level.
Finally, credit rating may have an impact on a firm’s ability to buy goods on credit and finance their accounts receivable using low-cost external financing. Thus, using the same approach as Attig et al. ( 2013 ) and Bendig et al. ( 2017 ), we test for any potential endogeneity bias caused by reverse causality. Thus, we repeat the regression model in Table 5 using the lagged values of NWC and CCC. The results are qualitatively similar, in which the coefficients of the lagged value of NWC and CCC are positive and statistically significant at a conventional level (the results are available from the authors upon request), which suggests that the endogeneity problem may have no impact on our results.
WCM is considered to be one of the most important factors in a firm’s success or failure. Therefore, in this study, we investigate whether a firm’s WCM can affect the perceived riskiness of external evaluators, such as the credit-rating agency S&P. The rationale for this relationship is that inappropriate WCM may increase a firm’s riskiness through under- or over-investment in working capital components. Based on U.S. panel data of 43,141 firm-year observations from 1985 to 2017, we find evidence of a relationship between WCM and credit rating. In particular, we find that this relationship is concave, in which firms have an optimal working capital level that balances costs and benefits to reduce firms’ riskiness; hence, credit is improved. Further, we find that the concave relationship is applicable to working capital components (inventory, accounts receivable, and accounts payable) and that deviation from the optimal working capital level may decrease a firm’s credit rating score.
This study aims to fill the gap in the existing literature by offering for the first time direct evidence of a relationship between WCM and credit rating. Based on theory and our empirical evidence, this study will help policy makers, managers, decision makers, and credit-rating agencies recognize that WCM can affect a firm’s riskiness, which in turn is reflected in its credit rating. This study highlights the advantages and disadvantages of over- and under-investment in working capital and its relationship with credit rating. However, a limitation of this study that should be taken into consideration is that we were unable to test the exact cost of over- and under-investment in working capital, which could have helped us understand the relationship more accurately.
The data supporting the findings of this study are available from the corresponding author upon reasonable request. The data are available at https://wrds-www.wharton.upenn.edu/
We also include “D” credit rating firms in our regression; the results are qualitatively similar.
Compustat cover credit ratings from the year 1985 onwards.
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Ala’a Adden Abuhommous & Ahmad Salim Alsaraireh
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Abuhommous, A.A., Alsaraireh, A.S. & Alqaralleh, H. The impact of working capital management on credit rating. Financ Innov 8 , 72 (2022). https://doi.org/10.1186/s40854-022-00376-z
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Juan García‐Teruel, P. & Martínez‐Solano, P. (2007), Effects of working capital management on SME profitability, International J ournal of Managerial Finance , 3(2 ), pp. 164-177.
A substantial body of empirical research can be found on the impact of working capital management on corporate performance across the globe, highlighting the varying significance of different working capital components. A summary of the empirical literature on the impact of working capital management on firm performance is reported in Table 1 ...
In addition, this study compared the working capital management and firm performance relation for covid 19 and crisis 2008 using the dynamic panel system generalized method of moments (GMM). Results showed the difference in the effect of working capital management on firm performance during the covid 19 period as compared to the crisis 2008 period.
Abstract. The main aim of the current study is to explore the relationship between working capital (WC) and firm performance. We chose a sample of 326 Czech firms, including 20 certified firms from the EFQM (European Foundation for Quality Management) Excellence Model from the Albertina database.
1. Introduction. Working capital management (WCM) is one of the challenges faced by companies, which can provide a convenient and appropriate level of liquidity for enabling companies to cover their short-term financial obligations - resulting from financing their operations - in order to ensure the continuity of the companies' business and maximize their profitability.
Working capital management is a challenge for every firm as each firm intends to maintain the optimum level of working capital. We employed the four most important components of working capital management in the current research. We examined the impacts of the components of working capital management on firm profitability.
Abstract: An analysis of working capital and working capital management. (WCM) is the purpose of this st udy. This study analyzes the research published. between 1960 and 2021 using the systematic ...
Working capital management (WCM) concerns decisions on the levels and turnover of the inventories, receivables, cash and current liabilities of a company. Consequently, WCM affects the profitability of an enterprise. This paper aims to determine the relationship between profitability and WCM, characterised by components of the company's operating cycle. The research is based on meta-analysis ...
Purpose. The purpose of this paper is to review research on working capital management (WCM) and to identify gaps in the current body of knowledge, which justify future research directions. WCM has attracted serious research attention in the recent past, especially after the financial crisis of 2008.
Although prior research in operations management has explored the working capital—firm performance relationship, the results from these studies remain inconclusive, with studies finding positive, curvilinear, or even insignificant relationships. This is largely due to contingent factors that make this relationship both complex and idiosyncratic.
Efficient management of working capital is essential for firms to avoid overinvesting in short-term assets for maximum profitability while guaranteeing much-needed liquidity to run their operations. This study examines the impact of working capital management on firms' profitability in the automotive industry in Europe before and during the COVID-19 pandemic period. The automotive industry ...
There are several reasons behind the significant attention of scholars to working capital and its proper management in a firm. First, working capital management (WCM) is significantly related to short-term financial supervision and it has noteworthy influence on profitability and liquidity of a company (Bagh et al., 2016).WCM is an area where a financial manager must show his/her prudence in ...
Table 1 also reports the means for various working capital metrics based on each single digit industry grouping and during our sample from 1990 to 2017. SIC 1000 818 firm-year observations is our smallest grouping and represents Agriculture, Mining, Forestry and Construction. SIC code 2000 industries includes firms in the food, tobacco, textiles, apparel, lumber and wood products, furniture ...
Abstract. Working capital management is one of the most important decisions that affect an organisation's financial performance. Despite the importance of this topic, the empirical evidence for emerging economies is scarce; therefore, this research attempts to estimate and compare how investment in working capital impacts the financial performance of companies listed on the stock exchanges ...
Working capital management refers to a company's managerial accounting strategy designed to monitor and utilize the two components of working capital, current assets and current liabilities , to ...
The role of working capital management policies arose when Padachi (2006) concluded that excellent working capital control and policy affect the formulation of a company's value. This conclusion came from the investigation of the working capital control policy objectives and its relation to companies' achievement and profitability.
Literature Review and Hypotheses Formulation. WCM is a critical component of a firm's success [42, 43].Furthermore, the WCM can help with risk management and increase the value of a business [].Furthermore, a conservative approach to WCM necessitates increased inventory and accounts receivable investment, which has the advantage of lowering supply-chain costs and price fluctuations, posing ...
2. Review of literature. Working capital management and profitability []: This study aims to find out the impact of working capital management on profitability.Return on assets, Current ratio, debt to equity ratio, operating profit to debt ratio, and inventory turnover ratios of the firms are the variables that are used in this study carried out for electrical equipment firms listed on Karachi ...
WCM in Indian pharmaceutical contexts sounds an interesting one to investigate. The study will provide a rich context to interpret the results. Indeed, the paper has a potential contribution to research, especially in the field of working capital. The study uses generalized method of moment for running the analysis.
The rationale for this relationship is that inappropriate WCM may increase a firm's riskiness through under- or over-investment in working capital components. Based on U.S. panel data of 43,141 firm-year observations from 1985 to 2017, we find evidence of a relationship between WCM and credit rating.
Therefore, the present article tries to examine the impact of working capital management on profitability of the firms of Indian steel industry. The study has taken into consideration four independent variables, that is, Current ratio, Quick ratio, Debtors turnover ratio and Finished goods turnover ratio which act as the indicators of working ...
The rules require comparable disclosures by foreign private issuers on Form 6-K for material cybersecurity incidents and on Form 20-F for cybersecurity risk management, strategy, and governance. The final rules will become effective 30 days following publication of the adopting release in the Federal Register.
DOI10.1108/AJAR-04-2020-0023. most often, business and financial directors are entitled to implement relevant working capital management policies. These policies are needed for financing because errors in working capital management may lead the commercial operations to withdrawn.
between working capital management and firm performance is previously discussed (Akbar et al., 2021; Akgün & Karataş, 2021; Chang et al., 2019). Our findings showed the effect of covid 19 on working capital management and firm performance was stronger and worse than the effect of financial crisis 2008.