As you state the required balances of 800,000 / 400,000 are conditions of the retirement extension.
You can whatever you want with your bank accounts but dropping below the required levels void the conditions of the extension.
Can you get away with it until it is time to renew again? Probably
What would an immigration officer say if they somwhow became aware that that required balances where not maintained mid-term? i don’t know but I am betting it could be a problem.
you are correct, I should have said ‘retirement extension’ instead of visa.
I also did not intend to infer any 30 days grace period. I was referring to the 90 day non-o visa less the 60 day seasoning period. Re-reading Thai immigration website and confirmed that the seasoned bank account is suppose to be in to qualify for the non-o visa itself (and not just for the retirement extension)
I believe you need funds in the bank to apply for the Retirement visa and maybe the DTV visa. But not for the non-o which gives you 30 days to open the bank account and funds. To be held in the account for the retirement visa application.
i don’t understand the 25k. I did not do the non-oa but I believe you do still need to show sufficient finances in a bank of your home country. Plus medical insurance and police report