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Thai corporate income tax calculator
P.N.D.50 and P.N.D.51

Enter revenue, expenses and add-backs. The calculator works out taxable profit, checks the SME rates and shows the tax to pay or reclaim.

How the calculation works

  1. Accounting profit = total revenue minus total expenses
  2. Add back expenses the law does not allow, e.g. entertainment above 0.3% of revenue or capital, donations above 2% of net profit, fines, surcharges and corporate income tax
  3. Deduct tax losses from the last 5 years to reach taxable profit
  4. SMEs (capital up to 5 million and revenue up to 30 million): first 300,000 baht exempt, 15% up to 3 million, 20% above 3 million · Other companies pay 20% of taxable profit
  5. P.N.D.51 uses the estimated full-year profit and pays half the tax · P.N.D.50 deducts tax withheld and tax paid with P.N.D.51

Filing deadlines

P.N.D.50 within 150 days after the end of the accounting period · P.N.D.51 within 2 months after the first 6 months of the period (8 extra days when filing online)

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