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Income Tax Calculator

Estimate income tax brackets and payable tax amount easily based on Thai progressive tax.

100% Client-Side (Data never leaves your device)

Income & Currency

Deductions & Allowances

169,000 ฿

ค่าใช้จ่ายส่วนตัว (50% สูงสุด 100k)

100,000 ฿

ค่าลดหย่อนส่วนตัว

60,000 ฿

เงินสมทบประกันสังคม

9,000 ฿

Add New Deduction
Tax Calculation Summary
TH TAX
Net Taxable Income

431,000 ฿

Max Tax Bracket

10%

Effective Rate: 3.4%
Estimated Payable Tax

20,600 ฿

~1,717 ฿ / mo
Effective Tax Rate3.4%

Tax Brackets Breakdown

LvlBracket (฿)RateTaxable (฿)Tax (฿)
10 - 150,0000%150,0000
2150,000 - 300,0005%150,0007,500
3300,000 - 500,00010%131,00013,100
4500,000 - 750,00015%00
5750,000 - 1,000,00020%00
61,000,000 - 2,000,00025%00
72,000,000 - 5,000,00030%00
85,000,000+35%00

Calculated using Thai Revenue Department progressive tax brackets (Net Income).

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How to Use Income Tax Calculator

  1. Enter your total annual income in the first input.
  2. Enter your combined personal deductions and expenses in the second input (default 160,000 THB).
  3. The system calculates net taxable income and applies progressive tax brackets instantly.
  4. Review your estimated payable tax and maximum tax bracket in the summary panel.

About & How Income Tax Calculator Works

Detailed insight and guide for optimal results

A progressive income tax calculator based on Thai Revenue Department brackets, showing tax base and payable amounts with step-by-step breakdown.

Many Thais are unsure of their tax obligations. This tool provides preliminary tax estimates for financial planning and deduction optimization.

Expert Tips for Best Results

  • Enter annual income and eligible deductions.
  • View detailed breakdown for each tax bracket.
  • Use results as guidance; consult an accountant for actual filing.
  • Plan tax deductions before year-end.

คำถามที่พบบ่อย — Income Tax Calculator

The Income Tax Calculator uses globally accepted mathematical and financial formulas to ensure that all estimations and results are correct and reliable.
The results are intended for initial planning and reference purposes. For legal submissions, official audits, or structural engineering validations, please verify details with a certified professional.
No account registration is required. You can perform all calculations anonymously and obtain results immediately.

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