You can file late voluntarily. Penalties apply, but this is usually manageable and preferable to waiting for enforcement.
Tax services for expats in Thailand
What happens if I did not file last year but should have?
Tax Advisory Disclaimer
The information on this website is for informational purposes only and is not professional tax advice. For full details, please consult our complete Tax Advisory Disclaimer.
Tax Advisory Disclaimer
The information on this website is for informational purposes only and is not professional tax advice. For full details, please consult our complete Tax Advisory Disclaimer.
Thai Tax Essentials for Expats 2026
Easy-to-follow annual Thai tax guide
Tax Support
Need Help with Your Thai Tax Position?
Speak with our support team
Tax Filing
Tax Filing Services
Find the right level of support for your Thai tax return
Tax Consultancy
Tax Consultancy
Clear guidance for complex Thai tax and cross-border issues
Thai Tax ID
TIN Application Service
Fast, simple support to get your Thai Tax ID