Companies require a comprehensive plan and controls to support the business operations and revenue management best practises that may influence the operating performance (profitability and liquidity position) during the Goods and Services Tax (GST) and Sales and Services Tax (SST) periods. This paper applied twosample t-test to analyse the operating performance the profitability and liquidity position for 249 listed companies from manufacturing and service sectors during the GST and SST

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... As a result, the GST has a positive impact on company profitability, whereas the SST has a slightly greater effect on the company liquidity position. In addition, the analysis on three main sectors operating performance results has similar findings with the main analysis where the profitability performance is better in the GST period while liquidity position increases in the SST period. Furthermore, the outcome of the operating performance analysis by company size reveals that small companies perform less successfully than expected for the profitability and liquidity position relative to large companies during the GST and SST periods. In spite of the fact that SST period outperforms the liquidity position for the companies; the companies still have high profitability and a manageable liquidity position during the GST era. This reveals that GST positively influences the operating performance of the companies from the perspective of effective revenue and short-term fund management. The outcome of this study provides a novel contribution to the business leaders, authorities and academics on the effect of two indirect taxes GST and SST on the companies operating performance.