Can I use a joint account with my wife to meet the 400,000 THB requirement for a marriage visa extension in Thailand?

Why would you not want to continue your retirement visa. The marriage visa Is much more intrusive meaning it cannot be approved at your local immigration office and you need to take pictures of you and your wife in and outside of your house and I think a a recommendation from two neighbors with copy of their I. D. Cards

@Stan ******

and at half the 800,000 Thai baht required to be banked ...

vs 400,000 is workable for many expats.

My IO tried to persuade me to switch to retirement visa. It is less work for them as well.

I thought the first extension on a visa had to be for the same purpose as the visa was issued for. So if you enter on 90 day non-o that's issued on the basis of marriage then your first extension off that visa should also be on the basis of marriage. The next year you can change to retirement as long as you satisfy the requirements.

I changed to extension based on marriage with the 40k monthly option after many years of retirement extension in Dec 2019 at Hua Hin. No problem. Changed back again December 2020 Hua Hin, no problem although initially downstairs wanted evidence i had 400k in bank three months after last extension--but not applicable. I didn't mention it upstairs, nor did they. I had earlier in Bluport been advised (when i checked about this conversion) to get the certificate of still being married at the Ampur. (Presumably as a divorce could be a reason for changing to retirement)

Yes it should be possible, but check with your office as your probably aware each office can interpret visa extensions differently. I've swapped 3 times for different reasons.

@Ellie ******

the double amount is good point. 800,000 vs 400,000.

But easily withdrawn in full too

Does your wife get the 0 or the 0 if you die?

what about the wife? (apologies, bad joke)