What are the reporting obligations for holders of a DTV visa in Thailand?

@Stephen ****************

FYI...

The first requirement is that a TM30 needs to be filed within 24 hours of arrival at any property you’re staying at (hotels usually do this for you without you realising, longer term residences, not so much) then on day 89 (your arrival day is day one) your 90 day report will be due. You can report that in person two weeks before the due date and up to one week after it.

A quick group search and you would get the info you require. And too say it's still quite murky 😂 it has been done for years.

Right, the 90-day report is required for all visa holders except LTR. You should also follow up with your landlord about the TM30, which must be updated whenever you change your address in Thailand. Hotels update it automatically, but private landlords are often less diligent, so you’ll need to ensure it’s done when you leave and return. TM30 is not your direct responsibility but it is requested to obtain some documents.

What if you do not report, leave the country, come back and on the next attempt to complete 90 days report, will you be fined for the previous failure to report?

For the 90 day reporting, yes. The 1st time in person and then online after. If you leave the country before then it resets when you return.