In the past I've used an ISA savings account statement. It's only the non-OA visa that requires lots of information. The non-O is simple

I guess you were talking about an OA Visa in which case you always require insurance.

I believe that your question is can I open a bank account if I am married to a Thai national. May I humbly suggest that you together with your wife approach local banks and ask them. Some branches may open accounts simply because you are married.

@Stephen ******

did you register on wise using a Thailand address or an address from overseas? If from overseas your card will work exactly as it does now, if you are registered in Thailand there will be major changes.

When did you last visit Thailand and which city?

A multi entry tourist visa would fit the bill for you

Providing you can read and write English then an agent is not necessary and in fact maybe a liability. Do it yourself, it's a little bureaucratic but a good exercise and will pay dividends future extensions. Choose your bank carefully, it should be in the town where you live and as close to immigration as possible so that you can easily get the necessary documents prepared for presentation.

Nongnuch Kamdee the extension is based on one year from the date entered into the passport on the original entry. The original entry would be for 3 months the extension would be for a further 12 months.

Get married. It's half the cost.

David Bruein You are 2 years behind the times. Visas do not look like that anymore.