What visa does my husband need to apply for the Non-O Retirement Visa in Thailand, and how can I apply for a trailing spouse visa?

He can apply at most immigration offices from a 30 day visa exempt entry/a 60 day tourist visa entry or a 30 day extension from one of those stamps as long as he has enough days left on his stamp to do the in country application at the immigration office

Most offices require a minimum of 15 days left on your current stamp to apply for the in country 90 day Non-O visa (no insurance required)

If he doesn't have enough time left on his current stamp he would either go to a thai consulate and buy a tourist visa or he would bounce out and back to get a free 30 day entry stamp

When you say this 𝗛𝗲 𝗵𝗮𝘀 𝘁𝗵𝗲 𝗳𝘂𝗻𝗱𝘀 𝗮𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 do you mean that he has a thai bank account in his name only with 800K baht in it?

Sadly when it is your turn, you're going to run into a brick wall trying to get a non-O based on being married to a foreigner here on a retirement visa, no consulate in the area will sell it. 🙁

The consulates all just stopped almost the same time issuing 90 day Non-O visas to "trailing spouse" of retirement visa holders.

So that one you're out of luck on 😕