When is my 90-day reporting due in Thailand after applying for an extension?

When you view the last recent 90 day report pinned to the passport, you will see the correct date!

15 days before and up to 7 days after in person

OR

15 days before if ur doing it online

You should go before the 90 Days is up anyways. No reason to wait for the 90th day.

Didn’t they put a slip of paper in your passport saying when you need to report?

Some immigration offices regard the date you received a long stay extension as proof of 90-day, but others don’t in which case it’s either 90 days after your previous report or 90 days after arriving in Thailand last, whichever is later. So check with your immigration office.

These 2 stamps mean nothing in the context of 90 day reports. When and how did you do your last 90 day report?

90 days after your arrival stamp in Thailand or 90 days after your last report

You are correct

The first stamp is an under consideration stamp, normally the immigration visit you during this one month period. The second stamp is your year extension stamp, your 90 day report will be 90 days from the date of this one /23, normally you will have a separate piece of paper stapled in your passport with the date to report on it.

If you were already on a long term extension when you applied for your extension in August, then none of these dates mean anything and it would be 90 days from your previous 90 day report, or 90 days from the last time you entered Thailand with a re-entry permit.

If you were on an initial 90 day non-O visa in August when you applied for your 1 year extension then you were not on a stay yet that required 90 day reporting so your timer would start from the day you were on a 1-year extension, which would be 25 August. You only have 90 day reporting when you're on an extension that permits you to stay in Thailand for over 90 days.

If this is the case, they should have stapled a piece of paper to your passport that said when your first 90 day report was due.

Need to see your last entry stamp or receipt of last 90 day report

It's 90 Days after the previous report date. The Visa date is immaterial.

I would say after 26 July as per my personal experience after I applied for a marriage visa for my husband.

From what you listed, and very little you said, Aug 15 looks like the counting start date, but that depends on what visa you were on before that extension.

Imho, your friend is right

extension has nothing to do with 90 days

what was ur LAST entry into thailand

u used an agent didn't ya :-)

your last visit to Immigration was Aug 25. The under consideration period was issued on July 23. On either one of these two dates, your last 90 days report got filed. You need to check the receipt Immigration tucked into your passport

is there no 90-days report receipt tucked inside your passport, telling you the date your next report is due?

It normally counts from your entry stamp date.

You haven't given us enough information to determine.

What visa or extension were you on in August when you applied for your extension? That makes a difference.