Thailand: New Rules Forthcoming for Board of Investment-Promoted Companies

Update August 20, 2025: Following the new policy below, manufacturing companies must submit the certificate of social security contributions via the Single Window system. For those who receive their BOI certificate on or after June 5, 2025, submission begins on October 1, 2025, using the August 2025 contribution. For companies that received their BOI certificate before June 5, 2025, submission begins on January 1, 2026, using the November 2025 contribution.  

June 27, 2025: The Thailand Board of Investment (BOI) has announced key updates applicable that will apply to companies promoted by the BOI.    

First, there will be minimum salary threshold changes. To demonstrate proof of salary, employers will need to provide an employment contract for all new work permit applications; and withholding tax documents for renewal applications.        

Additionally, for BOI-promoted companies in the manufacturing sector, companies with more than 100 employees will need to ensure that at least 70% of their workforce consists of Thai nationals. Exemptions may apply in certain cases, such as for smaller companies or under special conditions. Monthly social security contribution documents must be submitted as proof of the number of Thai employees. Currently, there is no local worker quota.   

These changes will take effect starting October 1, 2025 for companies with BOI-promoted certificates issued on or after June 5, 2025; and January 1, 2026 for companies with certificates issued before June 5, 2025.