Thailand Corporate Tax Calculator
Enter your net profit and company type to calculate Thailand corporate income tax under the standard 20% rate or the SME tiered structure.
Use the Thailand Corporate Tax Calculator
Company Details
฿
Enter your net profit and click Calculate Tax to see results.
Total Tax Payable
฿0
at 20% standard rate
SME Tier Breakdown
- First THB 300,000 @ 0%
- ฿0
- THB 300,000–3,000,000 @ 15%
- ฿0
- Amount above THB 3,000,000 @ 20%
- ฿0
Summary
- Net Profit
- ฿0
- Tax Payable
- ฿0
- After-Tax Profit
- ฿0
- Effective Tax Rate
- 0%
This calculator covers standard CIT only. BOI-promoted companies may have full or partial exemptions. Consult the Thailand Revenue Department or a local tax advisor for your specific situation.
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Summary
Enter your net profit and company type to calculate Thailand corporate income tax under the standard 20% rate or the SME tiered structure.
How it works
- Select whether your company qualifies as an SME (paid-up capital ≤ THB 5M and annual revenue ≤ THB 30M).
- Enter your company's net profit for the accounting period in Thai Baht.
- For qualifying SMEs, the first THB 300,000 is exempt, the portion up to THB 3 million is taxed at 15%, and the remainder at 20%.
- For standard companies, the flat 20% CIT rate applies to the full net profit.
- The calculator shows total tax payable, after-tax profit, and the effective tax rate.
Use cases
- Estimate quarterly tax installment payments (half-year advance, year-end filing).
- Compare tax burden between SME and standard company status.
- Model after-tax profit for investor presentations or business plans.
- Plan profit distributions and retained earnings for a Thai subsidiary.
- Verify Revenue Department assessment notices for straightforward single-entity companies.
- Assess the tax impact of crossing SME revenue or capital thresholds.
Frequently Asked Questions
Last updated: 2026-09-19 ·
Reviewed by Nham Vu