Can I combine Social Security income and bank deposits to meet the 800k Baht requirement for a Non-O visa in Thailand?

We could help you with that VISA.

So if I need 800K Baht, will my wife need the same? 1.6M B?

There are a couple of different aspects to this question. One is if your specific immigration office allows what's called the combination method. Some in the bank, and some monthly income.

Since you said social security, I assume you're from the US. The US does not provide the documents you need in order to verify your social security income.

That means your first year, to qualify for a non-O for purposes of retirement, you'll have to put 800k in the bank.

During that first year, if your office allows the combo method, you can transfer your social security payments every month to your Thai bank account.

After a year of doing that, you might be able to switch to the combo method for your second year.

But it's best to ask at your specific immigration office..

You need to ask your immigration office, as not every office will accept the combination method.

Also your income will need to be certified by your embassy, and many embassies no longer offer this service. If your embassy will not certify your income then you cannot use it as proof and will need the 800,000 in the bank.