This tool helps foreigners and expats in Thailand understand their Thai personal income tax obligations under the rules effective from 1 January 2024. Thai tax residency is determined by spending 180 days or more in Thailand in a calendar year. Tax residents are assessable on Thai-source income and, from 2024, on foreign-source income remitted to Thailand.

Key areas covered include: the 180-day residency rule · Thai-source income assessment · foreign remittance rules and pre-2024 savings protection · Long-Term Resident (LTR) visa tax exemptions · Double Tax Agreement (DTA) analysis including the credit method and sole taxing rights provisions · BOI, IBC and Regional Operating Headquarters preferential employment rates · cryptocurrency taxation under Ministerial Regulation No. 399 · personal deductions and allowances under the Thai Revenue Code.

Thailand has Double Tax Agreements with over 61 countries. The LTR visa scheme provides personal income tax exemptions for qualifying categories. BOI-promoted employment attracts a preferential flat rate of 15%. Cryptocurrency capital gains on Thai SEC-licensed exchanges are exempt from personal income tax from 2025 to 2029. This tool reflects current Revenue Department guidance and is updated as Thai tax law evolves.