I hope some more experienced people than me can tell. I did and renewed my licenses four times, every time with a residence certificate as my only option.
Pension is not required. You can apply with regular income and pension if you’re past 50 years. Most people who retire in Thailand starts with a 90 days Non O and apply for extension of stay within two months.
If you apply in Thailand you’ll need to bank 800K baht at date when you apply and for your second extension of stay you can switch to the income method showing proof of twelve months consecutive transactions of min 65K baht from abroad over sea into a thai bank account. For most people this is a regular pension, but passive income or period work at home is also possible.
This is not Correct! You can apply both for a 90 days Non O visa and a one year Non O-A visa at home. Non O-A can only be applied for at your home of permanent residence. There’s no mandatory health insurance required for a regular 90 days Non O applied for at home. Check the link from the Thai Embassy in London I provided for OP.
You’re right, but as I wrote agents are still able to open a bank account for you on a tourist visa and even a visa exemption. (Fee 3500 - 5000 baht). But you make everything so much easier by applying at home before you come.
He’s from the UK and means visa exemption as you assumes.