Corporate Income Tax Filing (PND 50/51)
ยื่นภาษีเงินได้นิติบุคคล (ภ.ง.ด.50/51) · § Advisory
Quick Answer
PND 50 + audited financials + Disclosure Form · late-filing penalty THB 1,000–2,000 + 1.5%/month surcharge.
Timeline: Prepared 5–10 days after auditor sign-off · e-Filing lodged immediately.
Official fee: No filing fee (free e-Filing) · penalty cap THB 2,000.
Legal Basis
Revenue Code §65–76 · PND 50 annual (within 150 days of fiscal close) · PND 51 mid-year (within 2 months of half-year) · 20% rate (SME ≤THB 5M capital & ≤THB 300M revenue: 15% on first THB 3M).
Who Needs This
Limited companies · registered partnerships · foreign branches · BOI (must still file even if exempt).
Required Documents
- Audited financial statements
- Trial balance + GL
- Fixed-asset & depreciation schedule
- VAT reports
- Withholding tax certificates (PND 53/54)
Common Pitfalls
- Missing Disclosure Form (related-party txns + revenue ≥THB 200M) = THB 200,000 fine.
- §65 ter disallowed expenses (donations >2%, entertainment >0.3% revenue) added back.
- Loss carry-forward capped at 5 accounting periods.
Typical Use-cases
- SME THB 5M capital, THB 50M revenue
- BOI 8-year tax holiday firm
- Foreign branch remitting profit
FAQ
- Must a loss-making company file?
- Yes always · loss can carry forward 5 years.
- BOI exempt — still file?
- Yes · segregate BOI vs non-BOI income clearly.
- Late-filing cost?
- THB 1,000–2,000 penalty + 1.5%/month surcharge (capped at tax due).
Other Legal Services
Request a quote — Call 083-249-4999 · LINE @NYC168 · contact@ilc.ltd






