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How early and how soon can you extend a 90-day Non-O visa in Thailand?

Sep 15, 2025
a day ago
Bo ******
ORIGINAL POSTER
With an initial 90 day O visa, how early can you do the extension? And on the other side, how soon do you need to do the extension? The 90 day O visa expires on 13 October.
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TLDR : Answer Summary
You can apply for an extension of your 90-day Non-O visa within 30 to 45 days before its expiration. As your visa expires on 13 October, you should submit your extension request between mid-September to late September. It's important to allow extra time for processing, especially in light of recent reports about stricter checks on education extensions.
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Bo ******
ORIGINAL POSTER
Thanks guys! It is an education visa. On the second part, must it be done so many days before the expiration of the visa? That is, giving IO time to process the documents, especially now with the reported crack down on education extension.
Tod *********
As James said at most offices you can apply for an extension when you have 30 days or less, so seeing as it's the 16th of Sept you can do it any time now ๐Ÿ™‚
James ********
What is the purpose for the Non O Visa ?

It's always best to ask your local Thai Immigration office for their requirements for the extension you are seeking.

Usually the extension may be submitted within 30 to 45 days from your current ending date STAMP in your passport.
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