This study was conducted on financial data of 38 economic groups listed on Vietnam's stock market for the period 2009-2019 and it aims to provide an empirical evidence on the impact of working capital management policy on performance in all phases of the economic cycle of Vietnamese economic groups. The study uses FGLS estimation method with 2 dependent variables ROA, GOP, independent variables including INV, AR, AP, CCC, dummy variable representing different phases of the economic cycle, variables Control includes CAT, CR, LEV, SZ, GR. Research shows that the greater the level of investment by companies in liquid assets corresponding to a certain level of activity (shown by average days of inventory (INV), average days of collection. (AR), cash flow cycle (CCC)) the lower the rate of return on assets. The study also provides additional evidence of the negative effects of economic crisis on the performance of economic groups. The study also shows that the number of short-term asset cycles has a positive impact on operational efficiency, and the level of debt use has a negative impact on operational efficiency. This result implies that the managers of economic groups can increase the efficiency of businesses through a reasonable working capital policy.

The application of international financial reporting standards (IFRS) plays an important role in improving the quality of enterprises’ financial statements. At the same time, adopting IFRS makes it easier for companies to access foreign capital. Therefore, the use of IFRS is indispensable for Vietnamese enterprises, especially for companies listed on the stock market. This study was conducted to evaluate the effects of benefits and costs on Vietnamese enterprises’ choice to adopt IFRS. The research surveyed 157 companies. The results of regression analysis using Statistical Package for Social Sciences (SPSS) software show that benefits have a positive impact on Vietnamese companies’ decision to adopt IFRS. On the other hand, costs have a negative impact on IFRS adoption. Based on the results of this study, the trade-off theory is used to explain the relationship between the costs and benefits of applying IFRS. When businesses find that the costs are too great for the company or are not yet balanced by the benefits, they do not apply IFRS. Therefore, business leaders have a correct understanding of the difficulties and challenges of converting to IFRS and have a scientific, methodical, and clear plan and roadmap for the transformation. The authors also offer some suggestions for improving the application of IFRS.