Foreign Income Tax Calculator

Only if you are a Thai tax resident (in Thailand 180 days or more in the calendar year) and the money is income earned from 1 January 2024 onwards. Savings earned before 2024 are not taxed when you bring them in.

A foreign pension brought into Thailand is treated like salary income, so you get the 50% expense deduction (up to 100,000 THB). Many tax treaties say government pensions are only taxed in your home country, so check yours.

If your country has a double tax agreement with Thailand, you can usually claim a credit for the foreign tax, or the income may be taxable only in one country. This calculator does not apply treaty relief, so your real tax may be lower.

It does not, unless you can show it. Keep a separate account for pre-2024 savings, or keep bank statements that show the balance at 31 December 2023, so you can prove where each transfer came from.

Tax residents with assessable income above the filing threshold file a personal income tax return by 31 March of the next year (a little later if filing online). You need a Thai tax ID number.