Do I need to deposit 800,000 baht in a Thai bank for my O-A visa extension?

Dear members, Please read the whole original post before you make a comment..

When going out and back before visa expire, you need to show a new medical insurance certificate for 1 year to get the 12 months.

When you re-enter Thailand you will be stamped in for another 12 months. However, ensure your insurance is also valid for 12 months or you will only be stamped in up to the expiry date of your current insurance

You can cross out of Thailand the day before your visa expires and get another year of stay inside Thailand as long as you have insurance for that year. As to getting an extension the immigration officer is correct, you can't avoid putting money in a Thai bank

As long as your visa is still valid you will get 1 year of stay, time enough to arrange all the needs to meet the requirements next year

If you want to apply for 1-year extension inside Thailand, you need to have your funds of 800k baht in your Thai bank account for two months before your application date because the Australian Embassy in Thailand doesn't issue affidavits anymore.

Criteria are clear in police order. (and this "evidence of monthly income" is the one that is provided by your embassy as an affidavit in Thailand. This part is set by each immigration office)

As you said you have Non-OA valid until Feb 2024, if that is the date of "valid until" on your visa sticker, you can re-enter Thailand on or before that date to be stamped in for a whole new 365 days (or until your insurance is valid). You can get some more time to think about your next move.