Thailand’s personal income tax runs on a progressive 0–35% scale — but on your net income, after a standard deduction and allowances, so your real rate is usually far lower than the headline. Set your income and allowances to see an estimate, your effective rate and the monthly equivalent. Unbiased, no paid placement.
Set your annual assessable income and key allowances to estimate Thai personal income tax, your effective rate and the monthly equivalent. It applies the standard 50%-capped expense deduction and the progressive brackets. Drag a slider or tap Type — this is a rough estimate, not tax advice.
Thailand taxes individuals on a progressive scale from 0% up to 35%, applied to your net income — what’s left after a standard expense deduction (50% of income, capped at ฿100,000) and your allowances. On ฿1,200,000 of income with these settings, the estimate is about ฿125,000 in tax, an effective rate of 10.4% — far below the top bracket, because only the slice of income inside each band is taxed at that band’s rate. Tax residency is about days present (183+ days in a calendar year), not your visa type, and remitted foreign income can be assessable for residents — this tool estimates tax on a given assessable-income figure and doesn’t decide what counts as assessable. Real returns also have allowances this tool doesn’t model (provident fund, life/health insurance, mortgage interest, donations); put those in the “other” field to refine the estimate.
Rough estimate only, from the figures you enter — not tax, legal or financial advice. Brackets, the expense cap and allowances reflect the 2024 tax year and can change; your actual liability depends on income type, residency, deductions, double-tax treaties and how foreign income is remitted. Always confirm with the Thai Revenue Department or a qualified tax adviser. BAANLYY never takes paid placement.
Thailand’s 0–35% scale is marginal: each slice of your income is taxed only at the rate for its band, not your whole income at the top rate you reach. The first ฿150,000 of net income is tax-free; the next slice is 5%, and so on up to 35% on income above ฿5 million. So someone with a net income that nudges into the 20% band pays 20% only on the part inside that band — their effective rate, total tax divided by income, lands well below 20%. The calculator shows both the band-by-band breakdown and your effective rate.
The brackets apply to net income — what’s left after deductions and allowances. Employment income gets a standard expense deduction of 50%, capped at ฿100,000, taken off first. Then come allowances: ฿60,000 for yourself, ฿60,000 for a non-earning spouse, ฿30,000 per child, plus provident-fund and social-security contributions, qualifying insurance, mortgage interest and donations. Every baht of allowance is a baht that isn’t taxed, which is why two people on the same salary can owe very different amounts. Use the “other” field for the allowances beyond the built-in ones.
Spend 180 days or more in Thailand in a calendar year and you’re a tax resident — it’s counted on days present, not on your visa. That matters because, from 2024, foreign income a resident remits into Thailand can be assessable here, while non-residents are generally taxed only on Thai-sourced income. Double-tax treaties often prevent the same income being taxed twice, and the treatment varies by income type. This tool estimates tax on an assessable-income figure you give it; deciding what’s assessable in the first place is the part to get professional advice on.
It won’t file your return or judge your situation. It assumes the figure you enter is assessable income, applies the standard salary-style deduction and the core allowances, and runs the brackets — it doesn’t model every special deduction, withholding already paid, treaty relief, or the remittance rules for foreign income. And it isn’t tax advice. Treat the output as a clear, transparent planning estimate from your numbers, then confirm the real figure with the Revenue Department or a tax professional before you rely on it.
See how it fits a full monthly budget, then read the expat tax guide for the residency and remittance rules.
General information and a self-input estimating tool only — not legal, tax or financial advice. Results reflect the figures you enter; brackets, the expense cap and allowances reflect the 2024 tax year and can change, and your actual liability depends on income type, residency, deductions, double-tax treaties and how foreign income is remitted. Always confirm with the Thai Revenue Department or a qualified adviser before relying on this. BAANLYY never takes paid placement.