TY - JOUR AU - Kulsiriwanit, Titaporn PY - 2021/10/31 Y2 - 2024/03/29 TI - EFFECTS OF CORPORATE INCOME TAX PLANNING ON FIRM VALUE OF COMPANIES LISTED ON THE MARKET FOR ALTERNATIVE INVESTMENT JF - Journal of MCU Nakhondhat JA - JMND VL - 8 IS - 10 SE - Research Articles DO - UR - https://so03.tci-thaijo.org/index.php/JMND/article/view/256136 SP - 219-234 AB - <p>The objectives of this research article were to study the impact of corporate income tax planning on business value of companies listed on the Market for Alternative Investment (MAI) affecting business value as measured by Tobin's Q and common stock prices. Examples used in research&nbsp;The company is listed on the Market for Alternative Investment (MAI) and is still operating with the latest information.&nbsp;Excluding the financial business group, Research Design of observational research Descriptive statistics and quantitative statistics were used to analyze the results. By collecting the company's financial statements with complete information for all 3 years from 2017 - 2019 based on data from the SETSMART database, with a total of 429 Firm years. the experiment with the largest number of descriptive statistics&nbsp;and the minimum of sales, liabilities and assets in comparison for 3 years. Quantitative statistics use the Pearson correlation coefficient.&nbsp;The results of the experiment are as follows: Return on Equity (ROE) is correlated with business value as measured by Tobin's Q in the opposite direction.&nbsp;And the return on equity (ROE) is related to the share price in the same direction and experimenting with&nbsp;Using statistical analysis of multiple regression equations, the research found that tax planning as a measure of return on equity (ROE) influenced business value as measured by Tobin's Q and the price of common stock.&nbsp;at a statistically significant level of 0.05. Tax planning, as measured by effective corporate income tax rate (ETR), tax/net profit margin, and tax rate on operating cash flows (TAX/OCF), also influences the measured business value. Tobin's Q and common stock price&nbsp;statistically insignificant</p> ER -