Can I apply for a 1-year marriage extension in Thailand if my current visa expires soon?

𝗦𝗼𝗺𝗲𝗼𝗻𝗲 𝘁𝗼𝗹𝗱 𝗺𝗲 𝗻𝗲𝗲𝗱 𝟭𝟰 𝗱𝗮𝘆𝘀 𝗹𝗲𝗳𝘁 𝗼𝗻 𝗹𝗲𝗮𝘃𝗲 𝘄𝗵𝗲𝗻 𝗮𝗽𝗽𝗹𝘆𝗶𝗻𝗴. 😮

Someone was confused. You need a minimum of 15 days left on your visa exempt entry or tourist visa entry to apply for the 90 day in country Non-O visa because of the review period.

BUT

Once you have the 90 day Non-O stamp to get a year extension you can do it any time you have 30 days or less left on your current stamp (meaning from 30 days before right on down until the day your stamp expires)

The down side in your situation is that IF you don't get the documentation all correct the day you apply you don't have any time left on your current stamp to re-group and apply again.

I would go to your immigration office well before your expiration date, get the hand out listing the requirements at that specific office (photos, bank documents, marriage documents, thai wife's documents, lease, TM30, copies, etc) because you got one chance to pull this off before you run on overstay at 500baht a day

This is a general list of requirements for an extension based on marriage to a thai. It is NOT office specific (which is why I said go get the one from your office)

Best of luck with it, you're fine, you're just running it right down to the wire time wise