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Business and Financial Tools

Thai Employment Income Tax Calculator — Tax Year 2568

Estimate tax for employment income with the 50% expense capped at THB 100,000, THB 60,000 personal allowance, and a user-verified total of other allowances.

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Thai Personal Income Tax Calculator for Tax Year 2568

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Thai employment-income estimate (tax year 2568)

The tool automatically applies the 50% employment expense capped at THB 100,000 and the THB 60,000 personal allowance.

Preliminary tax result

Estimated tax before withholding—
Employment expense—
Net taxable income—
Estimated balance/refund—
Effective tax rate—

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Quick answer

How is Thai salary income tax calculated for tax year 2568?

Subtract the Section 40(1) employment expense of 50% capped at THB 100,000, the THB 60,000 personal allowance, actual social security, and eligible allowances. Apply progressive rates to net income, then subtract tax already withheld.

How to use this tool

  1. Total salary, bonus, and Section 40(1) wages for tax year 2568.
  2. Enter actual social security, other allowances already checked for eligibility, and tax withheld.
  3. Use the result as a preliminary check against documents and the Revenue Department filing system.

How the calculation works

This tool is limited to employment income. Expense is min(50% of income, THB 100,000) and personal allowance is THB 60,000. The first THB 150,000 of net income is exempt, followed by 5%, 10%, 15%, 20%, 25%, 30%, and 35% bands published by the Revenue Department. Estimated balance = tax before credit − entered withholding.

Examples

Example Input Expected result
THB 600,000 employment income 
Income THB 600,000, social security THB 9,000, no other allowance, withholding THB 12,000
 Expense THB 100,000, net income THB 431,000, tax THB 20,600, and estimated additional tax THB 8,600
Net income not over THB 150,000 
Net income after expenses and allowances is THB 150,000
 Progressive tax THB 0

Limitations

  • Covers Section 40(1) only and omits the alternative method for Section 40(2)–(8) income.
  • It does not verify eligibility or caps for other allowances and excludes foreign income, joint filing, dividend credits, and one-time termination income.
  • It is not a tax return or legal/accounting advice and must be reviewed before use for another tax year.

Frequently asked questions

Can this calculate freelance, rent, or dividend income?

No. It covers Section 40(1) employment income only. Other income types have different expenses, methods, and conditions.

What belongs in other allowances?

Only a total already checked for tax-year 2568 eligibility and caps, excluding the automatic personal allowance and the separate social-security field.

Is an estimated refund guaranteed?

No. The Revenue Department assesses filings, documents, credits, and facts. This tool only subtracts the entered withholding from estimated tax.

References

  1. Thai Revenue Department — Personal income tax structure Verified 2026-08-03
  2. Thai Revenue Department — Income tax rate schedule Verified 2026-08-03
  3. Thai Revenue Department — Tax-year 2568 deductions Verified 2026-08-03

Content and calculation method last reviewed:

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