What happens if you miss your 90-day reporting in Thailand?

Staying 90 consecutive days in Thailand requires a 90-day report to be filed. The consequence is a single 2000 baht fine whether you miss one filing or a dozen filings. The fine would be issued when you visit an immigration office and request services and they happen to check. A TM30 needs to be filed beforehand to complete a 90 day report.

1. That’s the law, and it applies to all visa holders (except LTR). Like in any country, you can try to bend the rules until you get caught.

2. Plenty of people have been fined for this, so don’t listen to those who claim otherwise.

3. It’s a very simple and quick task to complete—no excuse except laziness and disregarding the rules of another country. Definitely not a great start after receiving a cheap and easy five-year visa.

4. Immigration keeps track of these details and may use them against you later.

5. The next time you'll need documents from immigration, get ready to pay for fine.

Your friend is right, nothing will happen, as long as you don't go to the immigration office. Ignore these repliers saying you'll "be fined". Nobody is looking for foreigners who didn't do their 90 day report. It's only an issue if you take yourself to an immigration office, which being on a DTV, I have ZERO clue why anybody on a DTV would do that.

What are the use cases that require one to visit immigration before doing a visa run every 180 days?

Yep 2000 fine

And will be noted on the system that you did not do it so you'll have a red flag on file .100% have to no matter what visa you have.

Your friend is gonna have an issue

2000THB fine next time you go to immigration. A copy of the 90 day report filing may also be required for the extension.