Set the inputs
Choose the tax year and mode. Employment/service mode takes gross income; manual net income mode takes an already verified amount after expenses and allowances.
Thai personal income tax
Estimate Thai personal income tax for supported domestic income or verified net income, with brackets and credits.
Calculated in your browser. Income and results are not saved or transmitted.
Domestic individual estimate only. Foreign income, treaties, nonresidents, dividend gross-up and special regimes are unsupported. This is not filing or an eligibility check. Liability is rounded down to whole baht before credits per Revenue Department guidance.
Sources checked 2026-09-08: Revenue Department: calculation, Expenses and allowances
How to use this calculator
Check the terms
Verify deduction eligibility and shared caps before entering totals. Enter tax credits from records; do not also count credits as deductions.
Read the result
Read net income, bracket tax, method two where applicable and the amount after credits. Separate annual liability from the extra amount payable.
A worked example
Illustrative calculation
Verified taxable net income of 500,000 THB produces 27,500 THB under method one, before method-two comparison and credits.
Compare a second scenario
Increase verified net income from 500,000 to 510,000 THB and inspect incremental tax. Do not apply the highest bracket rate to the entire amount.
Common questions
Where does my information go?
Calculations run in your browser. Financial inputs are neither saved locally nor sent to analytics. Reloading restores the initial values.
What are this model’s limitations?
Only the listed years and cases are supported. Deduction eligibility, foreign income, treaties and dividend credits are not assessed. This is not a tax filing.