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Calculator · Foreign income
What you'd actually pay in Thailand
Spend 180 days or more in Thailand and you're a tax resident, which puts the foreign income you remit into Thai income tax. This calculator gives you an estimate using the real brackets, the standard expense deduction and the allowances that apply. Nothing leaves your browser.
How the Thai tax works, in two minutes
Thailand applies territorial taxation: as a tax resident you're taxed on what you earn inside the country and on the foreign income you remit into Thailand. Since Revenue Department order Por 161/2566, that income is taxable whenever you bring it in — but only if you earned it while already resident, and from 2024 onwards.
The rate isn't applied to that income directly. First you subtract the deductible expenses for the category and the personal allowances; what's left is the taxable base, and the brackets from 0 to 35% run over it, with the first 150,000 THB at 0%. The full detail is in the guide to taxes in Thailand and in what counts as remitted money.
One common mix-up: not every baht you transfer or spend in Thailand is assessable income. Pre-existing savings, loans, transfers between your own accounts and returns of capital may be treated differently. Only the assessable foreign income you remit enters this calculation.
Calculator
Estimated Thai tax
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Fill in your details to see the estimate.
in euros
on gross
income
Estimate using the parameters in force on —. The result depends on how each income stream is classified, on your tax residency and on the allowances you qualify for — that gets looked at case by case. We go through it on the first call.
See the full breakdown
Two worked examples
The two cases we see most, run through the same engine as above: single taxpayer, employment or service income, no other allowances or foreign credit, and this page's default exchange rate.
Questions that come up every time
Are the first 160,000 THB tax free?
There's no automatic 160,000 THB exemption. What exists is a first band of 150,000 THB of net taxable income at 0%. Before you get there, deductible expenses and personal allowances come off. A single taxpayer with only employment income and no other allowances pays nothing up to roughly 310,000 THB gross — but that's the 100,000 THB standard expense plus the 60,000 THB personal allowance stacked on the 0% band, not a general exemption.
When am I a Thai tax resident?
When you spend 180 days or more in Thailand within the same calendar year. It's automatic, you don't apply for it, and it counts total days in the year, not consecutive ones.
Is everything I spend in Thailand taxed?
No. The tax falls on assessable income, not on spending. Pre-existing savings, loans, transfers between your own accounts or returns of capital may be treated differently. Only the assessable foreign income you remit or use there enters the calculation.
Is pre-2024 savings taxed?
Foreign income earned before 1 January 2024 falls outside the remittance rule introduced by orders Por 161/2566 and Por 162/2566, even if you bring it in later. Which is why documenting your account balances before that date is worth doing.
What if I already paid tax in another country?
A credit for the foreign tax paid on the same income may apply, capped at the Thai tax calculated on it. It depends on the applicable double-taxation treaty and on documentation: an official certificate of the foreign tax is normally required.
Does the 100,000 THB deduction apply to every kind of income?
No. The 50% standard expense capped at 100,000 THB is for employment and service income under Sections 40(1) and 40(2), and the cap is combined across both: not 100,000 THB each. Dividends and interest under 40(4) don't get it, and business activity under 40(8) has its own regime.
Is money I take out of my LLC salary, a dividend or business income?
It can't be classified automatically, which is why the calculator doesn't do it for you. An LLC withdrawal may be salary, remuneration for services, a profit distribution, a dividend, an expense reimbursement or a return of capital. The category depends on the legal and accounting facts of the structure, and it decides which deductible expenses apply. This is exactly the case worth reviewing before you remit.
Does this replace a tax return?
No. It's an estimate using the general parameters in force on the date shown and the figures you enter. The real classification of the income, your tax residency, the applicable treaty and your specific allowances can all change the final number.
Official sources
- Revenue Department — Personal Income Tax
- Revenue Department — Form P.N.D.90 (tax year 2025)
- Revenue Department — Allowances 2025
- Revenue Department — Foreigners and foreign-sourced income
- Revenue Department — Foreign-sourced income declaration
Parameters reviewed on 5 August 2026. The full annual form for tax year 2026 may still be published or updated, so the parameters should be re-checked before using this calculation to file a return.
A note on the brackets: the Revenue Department's English summary page still shows pre-2017 figures (a 40% deduction capped at 60,000 THB and a 30,000 THB personal allowance). The parameters in force — and the ones this calculator uses — are 50% capped at 100,000 THB and a 60,000 THB personal allowance, with the 30% band running to 5,000,000 THB.
Want your real number?
The estimate is the starting point. Your actual figure depends on how your income is classified and which allowances you qualify for. Twenty minutes, free, no obligation.