Thai Personal Income Tax Calculator
Estimate your Thai personal income tax, effective vs. marginal rate, and monthly take-home pay.
Estimated monthly take-home pay
฿47,421
Effective rate 3.4% · Marginal rate 10.0%
Bracket-by-bracket breakdown
| Bracket (THB) | Rate | Tax |
|---|---|---|
| ฿0 – ฿150,000 | 0.0% | ฿0 |
| ฿150,000 – ฿300,000 | 5.0% | ฿7,500 |
| ฿300,000 – ฿500,000 | 10.0% | ฿12,950 |
| ฿500,000 – ฿750,000 | 15.0% | ฿0 |
| ฿750,000 – ฿1,000,000 | 20.0% | ฿0 |
| ฿1,000,000 – ฿2,000,000 | 25.0% | ฿0 |
| ฿2,000,000 – ฿5,000,000 | 30.0% | ฿0 |
| ฿5,000,000+ | 35.0% | ฿0 |
| Total annual tax | ฿20,450 | |
- Annual gross income
- ฿600,000
- Expense deduction
- −฿100,000
- Allowances & deductions
- −฿70,500
- Net taxable income
- ฿429,500
- Social security (deducted from pay)
- −฿875/mo
How this is calculated
- Your monthly salary is multiplied by 12 to get annual gross income.
- The standard employment expense deduction is subtracted — 50% of income, capped at ฿100,000.
- Personal allowances are subtracted: ฿60,000 for yourself, ฿60,000 for a spouse with no income, and ฿30,000 for a first child (฿60,000 each for additional children).
- Social security (5% of salary up to ฿17,500/month), life and health insurance, RMF and pension life insurance contributions (jointly capped as a retirement group), Thai ESG contributions, and home loan interest are subtracted, each up to its own annual cap.
- Thailand’s progressive tax brackets are applied to what’s left.
- Effective rate is total tax divided by gross income; marginal rate is the rate on your last baht of taxable income.
Assumptions & sources
Figures reflect the 2026 tax year as understood at the time this tool was last updated (2026-08-16). Deductions and allowances change; always confirm current figures with the Thai Revenue Department or a licensed accountant before making financial decisions.
The child allowance assumes any second or later child qualifies for the higher, modern rate — in reality this depends on the child being born in 2018 or later. RMF and pension life insurance are jointly capped at ฿500,000 a year, matching provident fund, GPF, and NSF contributions (which this calculator doesn’t collect separately, so heavy contributions to those may lower your real deduction below what’s shown). Thai ESG contributions are capped separately and only count for purchases made through 31 December 2026, held for 5 years. SSF (Super Savings Fund) is not included as an input here — the purchase window for new tax-deductible SSF contributions closed at the end of 2024, so there is no new SSF deduction for 2026.
Related guides & tools
- 2026 Thai income tax brackets and rate table — every band and threshold this calculator applies, with worked examples
- How Thai income tax works for foreigners — residency, foreign-sourced income and what counts as assessable
Frequently asked questions
What tax year does this calculator use?
This calculator uses the 2026 personal income tax brackets and allowances, for income earned between January and December 2026 (filed with the Revenue Department the following year).
Is this an official calculation?
No. This is an estimate for planning purposes only, based on the standard employment-income deduction and common allowances. It is not tax advice — confirm your actual liability with a licensed accountant or the Revenue Department.
Does the take-home figure include social security?
Yes. Social security is a payroll deduction, not a tax deduction, so it's subtracted from your salary separately from income tax to arrive at take-home pay.
What if my spouse also has income?
The spouse allowance in this calculator assumes your spouse has no assessable income of their own. If they do, they typically file separately and the allowance doesn't apply — leave that checkbox unticked.
Are bonuses or other income included?
No. The estimate is based on your monthly salary alone, multiplied by 12. If you receive a bonus or irregular income, add its monthly-equivalent to the salary field to approximate its effect.