Thai corporate income tax estimate

Thai CIT Calculator

Estimate corporate income tax for Thai companies, check SME eligibility, and calculate net profit before you speak with an advisor.

Company Details

Enter the exact company figures in Thai baht. The calculator checks SME eligibility from paid-up capital and annual revenue.

Company type Auto apply SME rules if eligible SME rates apply when paid-up capital is not over 5M THB and revenue is not over 30M THB Standard company Flat 20% corporate income tax estimate

Annual revenue Annual expenses Paid-up capital Half-year tax already paid Withholding tax certificates issued to the company

Profit or loss is calculated automatically as annual revenue less annual expenses.

Compliance Checklist

Answer these basic questions before tax filing. Missing documents can increase filing risk and audit exposure.

Did you issue invoices using the prescribed Thai Revenue Department format? Did you collect complete receipts for expenses? Did you collect withholding tax certificates? Do you have executed agreements for key transactions? Do your expenses include lease payments? If yes, do you have a lease agreement? Do you have salary payments? If yes, do you have employment agreements? Did you collect tax residency certificates for overseas payments? Did you file VAT returns for overseas payments? Do you need help preparing the tax return and submission?

Reference rates

Thai CIT assumptions used here

SME corporate income tax

For qualifying companies, the calculator applies 0% on the first 300,000 THB, 15% from 300,001 to 3,000,000 THB, and 20% above 3,000,000 THB.

Standard corporate income tax

Standard Thai corporate income tax is estimated at 20% of net profit.

Tax payable

Estimated tax payable is corporate income tax less half-year tax paid and withholding tax certificates issued to the company.

This calculator is for general estimation only and is not tax advice. Actual tax filings depend on accounting records, deductible expenses, exemptions, half-year filings, withholding tax credits, and Revenue Department requirements. Sources: Revenue Department CIT, Revenue Department SME rates, Revenue Department VAT.

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