when you open an account you are given a bank book which when updated shows all transactions on your account. It has your name printed on the first page. If you loose it or it is stolen you have to make a police report before you can get another one You will need it to renew your retirement visa plus photocopies.
It is not bank statements you need but your bank book. It has to be updated for the past 12 months including up to the day you apply for your renewal. Plus a letter from you bank which is valid for 3 working days after the bank gives you the letter. The 800,000 balance has to be in your bank 2 months before and 3 months after you apply for renewal. Minimum balance can not go below 400,000.
Any branch of Bangkok Bank will give you a letter verifying you bank details. The cost is 100 THB and you will have the letter while you wait. Usually less than 10 minute wait.
you have this all wrong. Yes it is true you can extend a tourist visa 30 days for 1,900 THB. I never mentioned a tourist visa. To apply for a retirement visa for the first time it will cost 1,900 THB and will be valid for 3 months. You can then apply for a one year extension which is also 1,900 THB. Of course you have to meet financial requirements with the bank or proof of income. All I said was it is easier to have an agent do for you especially the first time. For the first time most agents charge 24,000 to 30:000 THB To renew a retirement visa most agents charge 12,000 THB. Or you can do yourself for 1,900 THB. I prefer to renew mine and my wife’s visa myself each year for 1,900 THB each. What you pay each year is about 10 times what I pay doing it myself. For now I prefer to spend the money I save doing it myself on other things.