What should I do if I received a strange visa expiration date for my NON-OA visa extension in Thailand?

@Steve ******

„and for some reason the IO gave me a visa expiration date of 29 November 2025”

No. He didn’t give you a “new visa expiration date”

He gave you a STAY PERMIT which is valid until November 29, 2025

Your “visa expiration date” is still December this year.

After the expiry of your visa validity, you have no re-entry permit any more.

So if you were to exit Thailand in February for a few weeks, you would need to buy a single re-entry permit in order to keep your stay permit until 29 November 2025 alive.

You do not have to do the “1-year extension of stay permit” by next week, yet.

You can wait until 29 October 2025, before you apply for the “1-Year Extended Stay Permit”

I have a non-OA visa.

I didn’t think that it could be “extended”.

My understanding is that, when the 1 year validity is getting close, a new health insurance policy needs to be bought, you leave Thailand; and you re-enter Thailand, just before the expiry date of the Visa.

You will then be stamped in, until the expiry of the new insurance policy.

I arrived with an OA in February 2017. I took a trip to Cambodia in November 2017. Like you, not understanding the visa, I went to extend in February 2018. Immigration told me to come back in November 2018. From then on I extended every November.

When they implemented the insurance requirement in 2019 I always synced my insurance dates with my November extension date.

On a Non OA you will stamped in for 365 days on each entry or up until your insurance is valid until. If you enter just before the visa expires and have the relevant insurance you’ll still get the full year. This “second” year is not multiple entry. If you want to keep the stamp “alive” you’d need to get a re-entry permit (single or multiple).

When does your insurance finish?