It is always best to hand in a hard copy of your DTV with your passport even though you have entered the visa number on the TDAC. A visa holder on another group I'm in was only stamped in for 60 days visa-exempt because the IO didn't notice he was a DTV holder. They are only human and often run on auto pilot so I always hand in my passport, DTV and boarding card (not sure if boarding card is still needed or not). At my last entry early in November the IO was very excited to see my A6 laminated DTV and called her colleague over to show how easy it was to scan. She said she wishes all the visas were like this. Smiles all round and stamped in for 6 months
You cannot hold two valid visas so it is imperative that you get your DTV cancelled first. usually only the issuing authority can cancel a visa, but perhaps you can contact the MFA directly for clarification.
Anonymous participant 746 the 20k requirement is for visa-exempt entries. They use it as an excuse to deny entry to people they suspect are not genuine tourist
There is no requirement to maintain 500k in the bank once the visa is issued, unless you wish to do a 6 month extension. The 20k baht cash (40k per family) requirement is for tourists that do not have a visa (visa-exempt entries) Tourists that have a visa have already satisfied the financial requirement during their application process. These include SETV, METV and DTV. Visa on Arrival are required to show 10k baht cash (20k per family).
Anonymous participant 771 I don't think you need to worry about your visa being cancelled but I doubt you will be able to renew it. I suspect the DTV will be changed into a digital nomad visa and the soft power will change to a
Cons for retirement visa: you have 800k wasting in a bank for 5 months then 400k wasting for 7 months. You have to renew every year. Pros: you never have to leave but you can if you purchase a re-entry permit, but you must return before your renewal is due or you have to start again. Cons for DTV: You can only stay 6 months unless you do a very difficult extension, but them must leave every year. Pros for DTV: You can leave and come back at will, with no cost. You do not have to renew every year as the visa lasts 5 years. You have very little dealings with immigration and do not have to keep any money in Thailand at all.