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Home / Accounting & Tax Knowledge Hub / Corporate Income Tax, PND.50 & PND.51

Corporate Income Tax, PND.50 & PND.51

Companies and juristic partnerships are taxed on net profit at 20 percent. SMEs with paid-up capital of not more than THB 5 million and revenue of not more than THB 30 million benefit from reduced rates set by royal decree: the first THB 300,000 of net profit is exempt, the band up to THB 3 million is taxed at 15 percent and the excess at 20 percent. PND.50 is filed with audited financial statements within 150 days of the accounting year end under section 68, and PND.51 within two months of the end of the first half under section 67 bis. Understating the half-year estimate by more than 25 percent without reasonable cause attracts a 20 percent surcharge on the shortfall under section 67 ter.

Updated August 2026 and based on the Revenue Code and related legislation. Rates and e-Filing extensions change — verify with the Revenue Department (rd.go.th) before acting.

Questions in this cluster — 4

  1. Q1004. What is the corporate income tax rate in Thailand?
  2. Q1005. When are PND.50 and PND.51 due?
  3. Q1006. What happens if the half-year profit estimate is too low?
  4. Q1007. How long can Thai tax losses be carried forward?

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