Thailand Capital Gains Tax Calculator

Enter your capital gain, asset type, and annual income to estimate Thai personal income tax on investment gains under the 0–35% progressive brackets.

Use the Thailand Capital Gains Tax Calculator

Your Details

฿

Profit from the sale: proceeds minus acquisition cost and allowable expenses.

฿

Salary, business income, rental, etc. — gross before the standard personal allowance.

Fill in your details and click Calculate Tax

Summary

Enter your capital gain, asset type, and annual income to estimate Thai personal income tax on investment gains under the 0–35% progressive brackets.

How it works

  1. Enter the capital gain — the profit from selling the asset (sale price minus acquisition cost).
  2. Select the asset type: SET-listed shares sold through the exchange (exempt for individuals), or other assets such as property, foreign shares, or crypto.
  3. Enter your other taxable income for the year (salary, business income, rental, etc.) before this gain.
  4. The calculator adds the taxable gain to your other income and computes PIT using Thailand's progressive brackets.
  5. Tax already attributable to your other income is subtracted so only the marginal tax on the gain is shown.
  6. Results include total PIT on the gain, the effective rate on the full gain, and net gain after tax.

Use cases

  • Estimate tax before selling investment property in Thailand.
  • Confirm the individual PIT exemption for shares sold through the SET.
  • Model the tax impact of selling foreign shares or crypto held by a Thai tax resident.
  • Compare after-tax proceeds for SET-listed shares and other taxable assets.
  • Understand which PIT bracket a large gain pushes you into.
  • Plan asset disposals across tax years to reduce the annual PIT burden.
  • Estimate tax for freelancers or expats with mixed income and investment gains.

Frequently Asked Questions

Last updated: 2026-09-19 · Reviewed by Nham Vu