18 hours ago, Odinrex said:

Can I ask how long it took? I mean, if I file in January, do you get RO21&22 soon, or do they wait until April?

From two weeks to one month (Revenue Office Surat Thani)

On 2/19/2026 at 7:06 AM, SamSpade said:

Try here https://efiling.rd.go.th/rd-efiling-web/register

NB You will need a Tax Identification Number (I know you will have one as you've filed before) which you can get from the Tax Office that covers the area that you live in, which isn't always the same one where you file your return (In my case, I live in Wongamat so had to register in North Na kluea BUT I had to file in Jomtien)

Alternatively one of the Tax accouning companies can get a TIN for you.

Been trying to register now, correct that its all Thai, even your address must be written in Thai letters. I hope this doesn't mean that you get RO20&21 with your address in Thai letters. Don't think the tax people in my home country would be impressed by that...

On 4/25/2026 at 7:36 PM, Odinrex said:

...... I hope this doesn't mean that you get RO20&21 with your address in Thai letters. ......

The form to request RO21 & 22 expressly requires the issuance of certificates in English language, and you will receive the documents in English, included your address.