Before filing the annual corporate income tax return (PND.50), businesses should carefully review their accounting and tax information to ensure accuracy and completeness. This helps prevent errors and reduces the risk of penalties and surcharges. Key points to review include:
1. Verify Consistency and Completeness of Revenue
Compare the revenue reported in PND.50 with that in the VAT return (PP.30) to ensure they match.
Common issues found:
- Some revenue has not been reported for VAT
- Revenue is recorded in different periods (cut-off mismatch)
- Certain types of revenue are VAT-exempt
If discrepancies are found, investigate the causes clearly, as they may affect both VAT and corporate income tax.
2. Review Withholding Tax (WHT)
For businesses earning service income or contract income, check that:
- Withholding tax has been fully deducted
- All withholding tax certificates (Form 50 Tawi) have been received from payers
Many companies have income but do not receive all Form 50 Tawi documents, resulting in the inability to fully utilize tax credits.
Recommendation:
Maintain a separate register to track these documents to reduce errors during filing.
3. Review Accounting and Tax Adjustments
This section directly impacts taxable net profit, such as:
- Accrued income / accrued expenses
- Deferred income / prepaid expenses
- Additional deductible expenses
- Non-deductible expenses
- Bad debts
- Depreciation of passenger cars (not exceeding 10 seats), calculated based on a maximum cost of THB 1 million
- Customs duty compensation
- Loss carryforward (up to 5 accounting periods)
Also, consider available tax incentives (e.g., BOI privileges or government measures) that may help reduce tax burden.
4. Compare with Estimated Net Profit
Compare the net profit calculated in PND.50 with the estimated net profit reported in PND.51.
If the estimated net profit is lower than the actual profit by more than 25%, additional surcharges may apply by law.
⚠Filing Deadlines
- Paper filing: Within 150 days from the end of the accounting period
- Online filing: An additional 8-day extension is granted
Benefits of Reviewing Before Filing PND.50
Conducting a thorough review before submission not only ensures accurate filing but also helps businesses to:
- Reduce the risk of tax reassessment
- Fully utilize tax benefits
- Improve tax planning for the following year
Source : The Revenue Department
