Is it correct that 15 months is available on a retirement extension. I did a 90 day report leaving me 6 weeks left on my current extension but was given another 90 days. I thought this was only available on an AO visa.

Your 90 day report doe not extend anything. It is not an extension.

Your report date will be past you permit to stay date from your extension because you will be remaining in the country. Getting an extension does not change your report date.

Address reports do not allow you to stay - only extensions of stay using TM.7 at fee of 1,900 baht allows longer stay. The 15 months is how long you could stay with a multi entry non immigrant visa valid for one year making new 90 day stays by leaving country and returning if your first entry was almost the same day the visa was issued.

Thank's

A 90 day report is just an address report - it has nothing to do with how long you are allowed to stay and gives you no extra time, or changes the extent of your permission to stay in any way.

If you originally had a non-Immigrant O visa, and applied previously for your permission to stay on it to be extended by one year, then you must reapply for the extension before the date stamped in your passport as "permission to stay until". This will give you another year only.

If you have a multi -entry OA visa and are still within its validity period (the "use before" or "enter before" date), then every time you enter you get permission to stay for one entire year, so if you leave and re-enter on the day before the "enter before" or "use before" date you will get another year permission to stay , even if you have already stayed nearly a year.

A 90 day report is just an address report - it has nothing to do with how long you are allowed to stay and gives you no extra time, or changes the extent of your permission to stay in any way.

If you originally had a non-Immigrant O visa, and applied previously for your permission to stay on it to be extended by one year, then you must reapply for the extension before the date stamped in your passport as "permission to stay until". This will give you another year only.

If you have a multi -entry OA visa and are still within its validity period (the "use before" or "enter before" date), then every time you enter you get permission to stay for one entire year, so if you leave and re-enter on the day before the "enter before" or "use before" date you will get another year permission to stay , even if you have already stayed nearly a year.

Very clearly stated.

Just one add on regarding the multi-entry O-A visa: Until the "use before" date during the first year in Thailand you can exit and enter without problem. If you time it as Partington has said you will be granted permission to stay for one more year before you'll need to apply for an extension of stay, but during that second year in Thailand you need a re-entry permit if you go out of the country and plan to return. Without the re-entry permit you will kill the permission to stay for the second year and be back at square one.

Edited March 30, 201412 yr by Suradit69