English interface
Thai personal income tax estimator
Estimate progressive personal income tax from salary and the supported deductions for the displayed tax year.
ReviewedPreliminary referenceTax year 2026
Saves this tool's name on this device only (up to 20). No form values.
Only visible result text is included. Form fields are not read. Review sensitive values before sharing.
How to use it
- Confirm the displayed tax year and the supported salary-income scope.
- Enter annual salary and only the deductions requested by the form.
- Review taxable income, each tax bracket and the unsupported cases before relying on the estimate.
Important limitation
This preliminary estimate does not cover every income type, allowance or credit and is not tax or accounting advice.
The interactive form is fully localized in English.
Reviewed 2026-09-23; next review 2026-12-23.
The brackets, Section 40(1)–(2) expense deduction and personal allowance have been checked. Not every income type or relief is supported.
Sources
อัตราภาษีเงินได้บุคคลธรรมดากรมสรรพากร · opens in a new tabSupports the 0–35% net-income brackets applicable from tax year 2017.Source checked 2026-09-23โครงสร้างค่าใช้จ่ายและค่าลดหย่อนกรมสรรพากร · opens in a new tabSupports the 50% Section 40(1)–(2) expense deduction capped at THB 100,000 and THB 60,000 personal allowance.Source checked 2026-09-23Recorded updates
Site changelogReview history
Dates describe the review scope recorded below. A page update does not mean every source was checked again.
- Last recorded source/method review
The brackets, Section 40(1)–(2) expense deduction and personal allowance have been checked. Not every income type or relief is supported.