Do I need to do a 90-days report if I leave Thailand shortly before it's due and plan to return?

@Nikolas **************

let's see if I can't clear it up.

The RULE is if you're in thailand when a 90 day report is due you report. If you're not you don't

The WINDOW to report is person is 2 weeks before down to 1 weeks after your due date.

That has nothing to do with your due date, and if you're IN the country you report.

There is no "I had other things to do" so didn't report option. You have from the 13th of Nov until you fly out to report.

As people pointed out, when you return your 90 day report will be due 89 days from the date you stamp in AND if you don't report this time there is a good chance the officer will see your previous 90 day report was due BEFORE you exited the country and you didn't do it and they can fine you 2000baht for failure to file a 90 day report on time and then let you file your next report

It takes 2 minutes to do the report online, you want to risk a fine and trying to argue fine points with an immigration officer who couldn't care less about your point?

You are supposed to report before you leave. If not and if the officer found out you didn't report you may or may not be fined for 2000thb for failing 90 days report on the next occasion you do some application.

90 days report is for reporting about that you have been in Thailand for 90 consecutive days since the last entry or reporting day. You have 15 days before until 7 days after (in case reporting in person at the immigration office) the due date to report that you are/were/would be in Thailand on xx date as the 90th day.