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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- Total allowances
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- Effective tax rate
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- Monthly tax equivalent
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Estimates use the values entered and the methodology documented below. Check current provider or authority information before acting.
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.