Foreign nationals are subject to a variety of critical components of Thai tax law, particularly if they own property or generate income within the country. Rental income taxation is a critical component. Residents of Thailand are subject to a 5% withholding tax, whereas non-resident expatriates are typically subject to a 15% withholding tax on rental income. Furthermore, property sales and transfer taxes are applicable when purchasing or disposing of real estate in Thailand. We include the following taxes: registration duty, withholding tax, business tax, and transfer fee. The specific rates and calculations may differ depending on factors such as the property's value and the proprietor's status. It is essential for expatriates to remain informed about the most recent tax regulations and to consider seeking guidance from tax professionals to ensure compliance and optimize their financial planning in Thailand.