No. I think the best way to do it is in the middle of your extension period (now in your case) and transfer 400,000 baht in 2 transactions, a couple of days apart. This ensures that you have the minimum amount of 400,000 in both accounts at all times.
for the non O and first one year extension you have to use the banked 800,000 baht method as the UK Embassy will not provide the affidavit. If you transfer 65,000 baht every month for 12 months, at the second extension you can transition to the 65,000 baht method by providing your bank statement. You can then withdraw the 800,000 baht.
that would definitely help! That's why I said it, as I have seen several reports from people that I would class as reliable sources of information, saying they had no problem at all, so I know it just depends on the Amphur and who you see on the day.
I should have said, my experience with the MFA was that for them to do their certification, you need the passport certified by the British Embassy first. Having said that, i have seen posts from several people who seem to wander into their local Amphur with virtually no documentation and walk out with a yellow book and pink ID card a few minutes later🤷‍♂️. As always with Thailand it varies from office to office, but it took me weeks to organise mine.
You can request it online and send your passport to the British Embassy. I did mine that way a few months ago and it came back in about a week. I don't know where you live, but I was lucky as I live in Hua Hin and could access the Ministry of Foreign Affairs here.
so are you saying on the retirement extension, your balance can't go below 800,000 to 400,000 three months after the extension and return to 800,000 two months before the next extension?