There is also the option of providing certified proof of a pension of at least 65,000 baht per month. However, you must check with the relevant immigration office beforehand to see if this option is still accepted.
For the past three years, I've only needed a pension certificate certified by the embassy to show my pension, which is over 65,000 per month. I hope it stays that way in the future.
I hope nothing has changed with immigration in Hua Hin.
In Hua Hin, immigration accepts a confirmation from your pension fund, which must be certified by the embassy of your country; your pension must be at least 65,000 THB per month.
It’s a comfortable way and no bank savings necessary