This study aimed to investigate the relationship between corporate governance and financial ratio with the performance of companies listed on the stock exchange of Thailand with an excellent score. The data were collected from annual registration statement (Form 56-1) of 191 companies from 2016 to 2020. Descriptive statistics such as mean percentage standard deviation and Inferential statistics such as Pearson’s Correlation Coefficient and Multiple Regression Analysis were used to examine the relationship. The results showed that 1) Corporate Governance namely Board size the ratio of independent director and Managerial Ownership positively corelated with firm performance. 2) Leverage Ratios (Financial Ratio) namely Debt to asset ratio and Debt to equity ratio negatively corelated with firm performance but Interest coverage ratio positively corelated with performance

The objective of this research is to study the companies listed on the Stock Exchange of Thailand Property and Construction Group on the relationship between corporate governance; namely the percentage of shares held by executives proportion of independent directors size of the board of directors management responsibilities of the chairman and the proportion of attendance at board meetings and 1) the operating result i.e. the return on total assets return on equity return on sales and earnings per share and 2) tax planning including the ratio of tax expenses to accounting profits before income tax and tax rate per total asset. The secondary data collected from the financial statements and the registration statement (Form 56-1) from year 2014 to 2018 in total of 71 companies is analyzed using descriptive statistics including mean and standard deviation and inferential statistics such as correlation analysis and multiple regression analysis. The research results showed that corporate governance including the shareholding percentage held by management management responsibilities of the chairman and the proportion of attendance at the Board meetings has a positive relationship with tax planning (Tax rate to total assets) with statistical significance at the level of 0.01 and 0.05. There is also a positive relationship between the operating results including the return on total assets and tax planning (Tax rate to total assets) with statistical significance of 0.01.

The purpose of this research is to study the relationship of corporate governance including corporate governance scores business size number of committees of the Board of Directors the proportion of independent directors to the total number of directors the number of meetings of the Board of Directors per year to operating results including gross margin net profit margin return on total assets return on equity ratio. The data was collected from the financial statements and the annual report form (Form 56-1) during the period 2013 – 2017 of 22 transportation and logistics service industry groups which are listed companies in the Stock Exchange of Thailand. Descriptive statistics correlation statistics and multiple regression equations were used in data analysis. The study indicated that corporate governance including the corporate governance score and number of committees of the Board of Directors and the number of meetings of the Board of Directors per year Related to the operating results including gross margin net profit margin and return on equity at a 95% confidence level.

The research objective is to study the relationship between environmental disclosure levels corporate governance and the performance of companies listed in the Real Estate and Construction group on the Stock Exchange of Thailand. It was conducted by collecting information from the financial statements the annual reports and the information registration forms (Form 56-1) of 91 companies from 2015 to 2019. Descriptive statistics and inferential statistics were used in data analysis including correlation analysis and multiple regression analysis. The study results showed that environmental disclosure levels including environmental policy disclosure and other environmental disclosures positively correlate with the rate of return on equity return on total assets with a statistical significance at 0.01 and 0.05 levels. Corporate governance including the percentage of shareholding by the management and the number of the Board of Directors positively correlates with the return on total assets with a statistical significance at 0.01 and 0.05 levels.

Corporate governance principle has played an important role in predicting the business failure because the concept of good corporate governance will result in value and value added to the business and shareholders. Several previous studies attempt to find the relationship between corporate governance mechanisms and firm’s performance. It was expected that company with good performance will not be likely to go bankrupt. However this article reviews the compiled documents and studies in the past concerning corporate governance mechanisms (board structure board committees and ownership) as application tool to predict business failures.