I have been in Thailand for 10 years now, always on marriage visa. This year I am founding difficult to deposit 400 000 in the bank. Is there any other solution I can explore? I am 65 years old, from UK. I believe you can stay with tourists visa, but does it mean that you have to leave Thailand every 60 days? I don't really fancy doing this. Is there any other way? My pension is only 30 000 baht.

A tourist visa gives a stay of 60days. This can be extended by 60 days to visit your Wife

You can also get a Multi Entry Non Imm O Visa from Savanakhet Laos .

This would give you up to 15 months but would have to leave every 90 days

It would seem that your best option would be to obtain a multi entry Non O visa based on marriage from Savannakhet.

This visa will allow 90 day entries each of which can be extended by 60 days at your local immigration office.

Thanks

You could apply for the 60 day extension to visit your wife instead of the of the one year extension. If the 60 days gave you enough time to get the money in the bank you could then apply for the one year extension. If not then go out for a single or multiple entry non-o visa.