How long does it take to receive the 12-month stamp after the maturation of bank funds in Thailand?

4 Weeks.I did it 2 months ago.But it's Not only the money in a bankaccount.It's about 5kg paperwork fotos of you and your wife in front of your home with the house nr.has to be readable and a foto of you cleaning in the house and cooking in the kitchen(No jokes)About a week under consideration someone of the immigration will come to visit you at home and ask you and neighbours and the mayor or helper of the mayor of the village you live ,some questions about ,your behavior or problems with neighbours.It's horror but doable!

On the day they accepted my application they gave me an appointment date about 3 weeks later and received it at that appointment

Bangkok immigration 1

You can get a re-entry permit while it is under consideration as long as you are back before the under consideration date. The period is usually 30 days but it can be 60 if they're busy. All marriage extension applications are sent to either Chiang Mai or Bangkok for approval, hence the under consideration stamp.

For which visa/extension?