Tax year 2026 / 2569
Thailand Personal Income Tax Calculator 2026
Enter annual employment income and the deductions that apply to you. The result estimates taxable income, annual tax, effective rate and monthly equivalent.
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Calculate your estimate
Adjust any field. The result updates immediately and stays on this device unless you choose to share it.
Estimated annual income tax
—Enter your figures to see the estimate.
- Taxable income
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- Employment expense deduction
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- Total allowances
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- Effective tax rate
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- Monthly tax equivalent
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- Balance after entered withholding
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| Taxable band | Rate | Income in band | Tax |
|---|
Estimates use the values entered and the methodology documented below. Check current provider or authority information before acting.
Built for the complete search intent
Calculate taxable income before applying Thailand’s 0%-35% brackets
This calculator applies the employment expense deduction, personal allowance and the deductions you enter before calculating progressive tax. That makes it more useful than a gross-income-only estimate, while keeping cross-border and treaty questions outside the result.
Thailand income tax calculator, Thai tax calculator and tax calculator Thailand- First band
- 0% to THB 150,000The first THB 150,000 of net taxable income is exempt under the published rate table.
- Top band
- 35% above THB 4mOnly the portion of net taxable income above THB 4 million is charged at 35%.
- Residence screen
- More than 180 daysThe Revenue Department uses aggregate presence of more than 180 days in the calendar year.
- Withholding check
- Estimate the balanceEnter tax already withheld to compare it with the estimated annual liability.
Progressive rates
Thailand personal income tax brackets used by the calculator
Each rate applies only to the portion of net taxable income inside that band.
| Net taxable income | Marginal rate | Tax on a full band |
|---|---|---|
| THB 0-150,000 | 0% | THB 0 |
| THB 150,001-300,000 | 5% | Up to THB 7,500 |
| THB 300,001-500,000 | 10% | Up to THB 20,000 |
| THB 500,001-750,000 | 15% | Up to THB 37,500 |
| THB 750,001-1,000,000 | 20% | Up to THB 50,000 |
| THB 1,000,001-2,000,000 | 25% | Up to THB 250,000 |
| THB 2,000,001-4,000,000 | 30% | Up to THB 600,000 |
| Above THB 4,000,000 | 35% | 35% of the amount above THB 4m |
The live bracket table in the result shows how much of the entered scenario falls into each band.
Decision checklist
What an expat should confirm separately
The calculator estimates ordinary employment-income tax. It does not decide residence, source, remittance or treaty treatment.
- 01
Count actual days present in Thailand for the relevant calendar year.
- 02
Separate Thai-source employment income from foreign-source income and document when income was derived and remitted.
- 03
Check whether a double-tax agreement, tax credit or special regime applies to the facts.
- 04
Reconcile the estimate with withholding certificates and the correct Revenue Department return.
Method and limits
What this estimate means
Employment expense deduction and eligible allowances are subtracted before applying Thailand’s progressive 0%–35% personal income-tax brackets.
- Included
- Standard employment expense deduction, personal allowance and entered spouse, child, social-security, provident-fund, home-loan and other deductions.
- Not included
- Complex income categories, tax credits, treaty relief, foreign-source income analysis and Revenue Department adjustments.
Before you decide
Use the result carefully
- 01
Keep evidence for every claimed deduction.
- 02
Do not assume foreign tax paid automatically removes Thai filing obligations.
- 03
Use this as an estimate before checking the current Revenue Department rules.
Primary references
Official and authoritative sources
Formula assumptions are reviewed against these sources. A linked source may be available primarily in Thai.
Questions
Common questions
Are foreigners subject to Thai personal income tax?
Tax treatment depends on Thai-source income, residence status, remittances, applicable law and tax treaties. The calculator only estimates ordinary progressive tax on the income entered.
Is the personal allowance applied automatically?
Yes. The calculator applies the standard personal allowance used by the shared Thai tax engine.
What does the withholding balance mean?
It subtracts the amount you entered as tax already withheld from the estimated annual tax. It is not a guaranteed refund or payment because credits, other income and Revenue Department adjustments are not modelled.