Do retirement visa funds need to be from a specific source for the 65,000 THB monthly transfer in Thailand?

Does the US government do auto deposits into foreign accounts? Been awhile but thought not. Everything is constantly changing to or back to in Thailand so will ask if the first transfer is 800k before the monthly will be acceptable?

I have just changed from banked 0 baht to monthly payments of + baht. Firstly it is important to remember that you must meet the criteria on which your extension granted on banked money are met. Ie. You must keep 0 baht in your account for three months after renewal. Then the balance must not fall below 0 baht. I kept it at 0 baht for the full year to be safe. AT THE SAM TIME 12 monthly payments of baht plus must be made into your thai bank and show as international transfer on your statements and bank book. Miss one and you are done. Fall short by 1 baht and you are done. I transfer baht monthly to BB using Wise and funds for long term stay my account is tagged and the last 18 transfers have shown as international with no issues. On applying for my extension based on monthly transfers I approached immigration with trepidation. However they were very helpful in spite of not being familiar with this method. I was asked to go away and produce evidence of where the transfers had come from. I provided my home bank statements and they had obviously made themselves mire familiar with the rules. The IO took over an hour tracing money out of uk and into Thailand. The transfers did not need to be from pension income, most were from rental income. Finally the Officer came over, smiled, (usually a bad sign) and said we give you your visa. I had printed out bank statements from BB and was not asked to get them verified by the bank. My bank book showed a transaction on the day which was a phone top up. The only thing I asked the bank for was a copy of my updated bank book which they willingly did foc. I got my stamp and verified that I could now remove the 0 baht which was in another account. It was easier than I thought.

As I do not spend baht per month I am building up more cash in Thailand than I would like especially as I am in the uk for 6 months so as not to be tax resident in Thailand this year. Going forward I will move money back to my uk bank and use it again for monthly transfers. This appears to be quite cheap from BB using a bank to bank or swift transfer.

I hope this helps anyone doing the same but check with your office as they vary.

How long do you have to transfer this amount to be able to use to apply for retirement visa? Is it 3 months?

Absolutely

every monthly transaction from your foreign account to your Thai bank account must be coded as coming from abroad. Some Immigrations additionally ask for the real source of the income (pension, rental income, investment, savings). If you use WISE for the transfers, make sure you tick the box "living expenses for long term stay in Thailand", as only on this reason, the transfer will be coded as coming from abroad. All other reasons will result in an in-country transfer from a Thai WISE account to your Thai bank account

It possibly can be office specific. My Immigration Office in Maha Sarakham wanted a copy of where I am getting my pension. I gave them a copy of my Social Security statement with my Social Security number blacked out.

When I apply for my yearly extension I show my SS statement as proof of a pension

It can be from your personal account. You need to make sure that the "reason for transfer" is listed as "long term stay in Thailand."

I’ve read that it does not have to be traceable back to a “retirement-type source.” In can be any source. Unless you want to qualify for tax-exempt status - then showing the source would be required . Someone correct me if I’m wrong.

It can be any transfer, but ensure that the Thai bank shows it as an international transfer

Yes and yes