If I want to move to retirement visa how many months do I have to show the 800k in the bank? I presume this is one of the main issues to satisfy apart from being above 50 yrs old. 

 

Any other tips are appreciated

thanks

The 800k baht has to be in the bank for at least 2 months on the day you apply for the extension.

Then for 3 months after you apply and 400k baht after that until you top-up your account to 800k baht for the next extension.

3 hours ago, charliechoc said:

Any other tips are appreciated

If, perchance, the visa which you originally used to enter Thailand was of the non-OA variety, don't forget that you'll need to subscribe to a TGIA-approved health insurance policy providing minima 40k out-patient & 400k in-patient cover as a prerequisite to switching from marriage to retirement as your extension reason. No need to worry about this requirement, though, if your original visa was of the non-O variety.

 

In addition please note that your initial retirement extension will be dated 1 year from when you submit your application to Immigration and not from when the permission of stay granted under your previous marriage extension is due to expire. Might be a material consideration if you have previously been in the habit of applying for your extensions at the earliest opportunity (usually 30 days before your current permission to stay expires at most offices). The good news, though, is that future retirement extensions will be dated 1 year from when the current permission to stay expires.