Is a bank statement required when transferring a visa stamp from an old passport to a new passport in Thailand?

I did this at CW bkk with both passports and a letter from enbassy stating the change of passport no bank statements required....check with your IO that you are transfering the stamps do they need bank statements...

Despite their website (at Chang Wattana) there is no mention of wanting bank book. I know from personal experience. Best advice take bank book if using 800k as guarantee of monies.

There are a couple of immigration offices that have recent reports of requiring a bank statement when transferring your extension stamp (not transferring your visa, you cannot transfer a visa). If you have an extension based on retirement and are using anything other than embassy verified income, then you have a requirement to keep money in your bank during the time between extensions. Some immigration offices are requiring you to show that you have continued to meet your requirement since you got your extension in order to move your extension to a new passport.

If you don't have an extension based on retirement, then this likely doesn't apply to you.