What are the consequences of failing to do the 90-day reporting while on a DTV visa in Thailand?

nothing will happen. maximum a fine of 2k but unlikely to happen.

I know exactly what will happen to you. Overstaying your 90-day check-in on a DTV visa in Thailand by 30 days will result in a fine of 500 Thai Baht per day of overstay!!! up to a maximum of 20,000 Baht!!! and potentially a ban from re-entering Thailand for a period depending on the length of the overstay.

I would go to the local immigration and pay the 2000 THB there. They won't red flag or do anything to you because you went to immigration voluntarily. But if you wait until you leave and you come across an officer who is having a bad day and doesn't like foreigners anyway, he will take the 2,000 baht fine and even red flag you. That doesn't mean they will not let you in again but they could ask you more questions than normal. Who would you pull out into an interrogation room ? A person who always followed the rules or people who had 90 days overdues ?

You will get horse whipped.

You finna find out

Again, this site has idiot comments that contribute zero help! You give non helpful comments you are a? Fill in the blanks?

Nothing will happen. If you just leave the country then no problem, no one will ever check and there won't be a fine when leaving.

The problem only exists if you want to extend your visa at an immigration office in the country. Then they check and you pay 1900 baht fine if you did not do the report. I actually know several people on long term visa that never do the 90 day report and just pay the fine once a year.

Nothing will happen when you fly out. At your next interaction with immigration you might be fined, assuming they notice

Nothing will happen. Airport IOs don’t check your 90 report status.

Most probably get away with it

normally, they give you a few days grace and then fine you 2000 bht, but who knows with DTVs

What happens if you don't follow a country's immigration rules?