Fines and bans
| Situation | What usually happens |
|---|---|
| Overstay under 90 days, you leave voluntarily | Fine of 500 THB a day, paid at departure. No ban. |
| Over 90 days, you surrender | Fine plus a 1-year ban (longer overstays: 3, 5 or 10 years) |
| Caught overstaying, under 1 year | Arrest, detention, deportation and a 5-year ban |
| Caught overstaying, over 1 year | Arrest, deportation and a 10-year ban |
What to do now
Don't travel around the country. Checkpoints are where most overstayers are caught.
Book a flight out, and go to the airport early to pay the fine at immigration.
If your overstay is long, talk to a lawyer first about surrendering at an immigration office.
You can't extend or convert a visa while overstaying. The only safe step is to regularise by leaving or surrendering.