Funding a Retirement Visa: What Immigration Actually Wants (and What Your Bank Wants)

The question I get asked most often by readers planning a retirement move to Thailand isn’t really about the visa at all. It’s some version of: “I’m about to wire 800,000 baht into a Thai bank — do I need some kind of special form for immigration, or does the bank sort that out?”

The honest answer surprises most people: for the standard 800,000 baht deposit method, Thai Immigration doesn’t actually ask where the money came from. What they want is much simpler — and separately, there’s a good reason to get the paperwork right anyway.

What immigration actually checks

For the retirement extension (technically a one-year extension of a Non-Immigrant O visa, filed on a TM.7), the financial requirement comes in three flavours. All three are about the balance sitting in a Thai account, not about how it got there:

• The 800,000 baht deposit method. The full amount sits in a Thai bank account for at least two months before you file, and stays there for three months after the extension is granted (you can drop it after that, immigration officers I’ve spoken to say most offices expect it to stay reasonably intact going forward, not spent down to zero the next week).
• The 65,000 baht monthly income method. Regular monthly deposits of at least that amount, historically evidenced by an embassy income letter. Worth flagging: US and UK embassies have both stopped issuing these letters, which has pushed most American and British retirees toward the deposit method or the combination below by default.
• The combination method. A smaller deposit (topping up to 400,000 baht) plus monthly income that, added together over a year, reaches 800,000 baht.

Whichever route you use, what the immigration office actually wants to see is a bank letter confirming the balance — dated no more than a few days before you submit — plus photocopies of the relevant bank book pages. That’s it. Nothing about a FET form, nothing about a Credit Advice letter, nothing about proving the money crossed a border.

Where the FET form and Credit Advice actually come in

So if immigration doesn’t ask for it, why bother? Two reasons, both practical rather than bureaucratic:

• Your own paper trail. If a bank ever queries the source of a large incoming deposit — which does happen more often now, as Thai banks tighten anti-mule-account monitoring — having a Credit Advice or international transfer confirmation letter on file from day one makes that conversation five minutes instead of a frozen account (see our companion guide on why accounts are getting frozen right now).
• Future flexibility. If you ever move the money again — converting back to your home currency, or shifting it to a different Thai account — a documented foreign-currency origin is one less question to answer, and matters for exchange control records if the transfer is later reversed or re-sent abroad.

The fix costs nothing: when you ask your Thai bank for the balance letter immigration needs, ask at the same time for a Credit Advice (sometimes called an international transfer confirmation) for the original deposit. Most branches will issue one on request even below the FET threshold — it just isn’t automatic the way the FET form is.

Doing the transfer itself cleanly

A few habits make the whole thing easier, regardless of which method you use:

1. Send it as one transfer where you can, rather than several smaller ones over a few weeks. Immigration officers and bank staff both find one clean deposit easier to match against a bank letter than a scattering of part-payments.
2. Make sure the account name matches your passport exactly — a middle name dropped or a hyphen missing is a common reason banks put a transfer on hold for manual review.
3. Keep the SWIFT confirmation your home bank gives you when the transfer is sent. It’s not what immigration wants, but it’s what your Thai bank will ask for if the Credit Advice needs to be traced back to its source.