Can I Transfer 800,000 Baht from Thailand Back to My U.K. Account After 3 Months?

Nope, that's NOT gonna work :( Just so you're clear, to get a yearly extension the 800K baht needs to be in your thai bank account for FIVE months (2 months before and 3 months after) and then you could move half of it out of you wanted to as long as the balance didn't go below 400K baht the rest of the year

As

@Tod ********

replied yesterday:

"Did you get your visa BEFORE you came here from a Thai consulate or did you get the visa/extension AFTER you got here at the immigration office ?

The requirements to get a year extension of stay office inside the country from an immigration based on retirement are 800K baht in a Thai bank account for 2 months before you apply for the extension, the money needs to be in the account for 3 months after you get the extension granted and then the balance can't go below 400K baht the rest of the year.

There is NO requirement to show any proof of funds when doing 90 day reporting in most Immigration Offices..."

.....

But some do in the first 90 days from issue of the extension request the bankbook be shown to verify the balance is still at 800,000.

The money needs to be in a Thai bank account in your name only and readily accessible.

NO you cannot.