Until now I have used a law office to file my income tax return in thailand, 850k THB remitted of my pension from Norway and paid tax on that. Plus 25k fee to the law office. Now I see that you can do this yourself on rd.go.th/english. I mean, if I can save 25k on a 10min job on my computer, why not..

Anyone tried and can tell if it worked?

The Thai RD online eFiling system is all in Thai language.

However, if you use a chrome based browser, you can right click on the screens to translate to English. I was able to file a tax return online last year using this method.

For last 10 odd years, my friendly TRD office has lodged my Tax Return using my eFiling Registration/Sign-on details, based on the necessary supporting documents [Income Statements; eligible Deduction/Allowances etc]. My Return has been pretty simple, but given the language challenges I suspect any complexities like DTA/Foreign Tax Credits would need explanatory assistance from an accompanying Thai translator.

Yep, filed online for the past 2 years and imost of it is very easy if (as mentioned above) you use a Browser with a built in Browser or can read Thai.

Only part I struggled with was selecting the correct Income catagories, I normally rely on my partner to translate written Thai for me & if your only income is a Pension this might work for you, but when it comes to things like Dividends & Capital Gains she struggled to explain what the differences between similar sounding income catagories were (as did Google Translate at times), but once you've eliminated the possibilites that don't apply, it's straightforward enough.

I kept a note of what catagories I needed from last year so this year's return took less than 5 minutes.

Where things may get a lot more complicated is if you have to claim Tax Credits (I don't but it sounds like you do), I've read reports that there is no where to enter these on the return and you have to add a separate document at the end explaining the credits being requested & adding proof of paid tax in your home country. If this does apply to you then it might be worth getting a Tax Agent (ExpatThailand offer a simple tax filing service & a free 15 min consult) to do it for the 1st year, then do it yourself in future years.

End of Filing season (8th April for online filing) is fast approaching (49 days) so if you do need to get a service to help then you contact one very quickly as they're likely to be very busy already.

Good Luck

Doesn't Thailand allow Norway pension income tax free as US? Curious. Guess not.

31 minutes ago, Nurf said:

Doesn't Thailand allow Norway pension income tax free as US? Curious. Guess not.

thailand has double tax agreements (DTA) with 61 countries. all of these are different and need to be looked at separately. some DTA are favorable for expats living in thailand, while others offer basically no benefits at all ...

https://www.rd.go.th/english/766.html

2 hours ago, SamSpade said:

things like Dividends & Capital Gains

As long as you keep all your investments & shares & stuff in your home country and only remit THB 850k from your pension to Thailand for living expenses, that's all you declare, right? They don't need to know about the rest.

6 minutes ago, Odinrex said:

As long as you keep all your investments & shares & stuff in your home country and only remit THB 850k from your pension to Thailand for living expenses, that's all you declare, right? They don't need to know about the rest.

Correct, only need to consider what you remit 👍🏻

I don't know how long cash will be around, but if you had a cheap flight home or just visit regularly you could bring cash as well.

7 hours ago, SamSpade said:

Correct, only need to consider what you remit 👍🏻

I recall reading something that you can remit as much as you like tax free as long as it's past two years. So, present and year prior.

I'm no tax authority by any means

8 minutes ago, Nurf said:

I recall reading something that you can remit as much as you like tax free as long as it's past two years. So, present and year prior.

I'm no tax authority by any means

That’s only true as > 2 years back for 2025 tax year filing would be pre-2024 income & there’s “Grandfathering” in place for any income earned before 1/12024.

Unless the proposed change in rules happens, the same won’t be true for 2024 income remitted in 2025, 2026 or any year in the future.

On 2/17/2026 at 8:06 PM, Odinrex said:

Until now I have used a law office to file my income tax return in thailand, 850k THB remitted of my pension from Norway and paid tax on that. Plus 25k fee to the law office. Now I see that you can do this yourself on rd.go.th/english. I mean, if I can save 25k on a 10min job on my computer, why not..

Anyone tried and can tell if it worked?

I just go to the tax office, hand over the credit advice paperwork from the bank listing the cash transfers, hand over the withholding tax form and they fill in the paperwork for me. This year the lady filling in the paperwork also registered me for e filing. She gave me a printout of this year's return and said to do it online myself next year. No need to pay a third party for something the tax office will do for free.

On 2/17/2026 at 8:06 PM, Odinrex said:

Until now I have used a law office to file my income tax return in thailand, 850k THB remitted of my pension from Norway and paid tax on that. Plus 25k fee to the law office. Now I see that you can do this yourself on rd.go.th/english. I mean, if I can save 25k on a 10min job on my computer, why not..

Anyone tried and can tell if it worked?

My wife (thai) has been doing both of our Thai tax returns online for many years. Years back the online system was poor which led to frustration, but these days it works OK and the wife completes our tax returns quickly. So yes the online system works well once you're used to it. The problem is it's in thai.

The amount you pay the lawyers is in my opinion, based on lawyer costs our company has incurred over the past 25 years, is excessive. I have no idea what is a fair fee, but I would have thought less than b15k.

I'd also recommend that you would be better off employing an accountant/accounting firm, as tax returns is they're cup of tea. The lawyers are probably hiring an accounting firm to do your tax, which might account for the high fee you pay.

If you don't have a thai spouse to help you do your online tax return, then I'd recommend hiring an accountant to do for you. You could even request that as part of their fee, they actually walk you through filling the form in online (so you could do it in future years).

16 hours ago, Nurf said:

I recall reading something that you can remit as much as you like tax free as long as it's past two years. So, present and year prior.

I'm no tax authority by any means

I believe that was a proposal but has not yet been passed. I can't anything on my searches that says it was passed.

Some good advice here now, thank you. I guess next year I will go to the accountant on the ground floor of my condo building and pay them to file and show me how to do it. Or take my laptop to the tax office and see if anyone there can do it for me on my computer.

Been trying to find where to register an account to file online, but no luck.

https://www.rd.go.th/english/index-eng.html

this site only links to a bunch of pdfs, like: e-Form (Fillable Tax Return), but that's only a pdf that looks like you must print out and sign, and that is not what I am looking for.

6 minutes ago, Odinrex said:

Been trying to find where to register an account to file online, but no luck.

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.

1 hour ago, biervoormij said:

I believe that was a proposal but has not yet been passed. I can't anything on my searches that says it was passed.

Correct. Unfortunately it keeps popping up in threads as was proposed under the then Pheua Thai led administration and quietly disappeared off the radar when that went south.

Thanks SamSpade, I will register there after this years process is finished, I've already wasted 25k on the lawyer:)

I live in Jomtien and there are TWO offices just down the road, Chonburi area revenue office 3 & Banglamung area revenue branch office 2 (same building). But on my RO21 and 22 from last year it says: Regional Revenue office 5, Tamnaknam road, Chonburi 2000. I think that's where I have to go.

I pay an accountant in Hat Yai Bht2000 to do the filing for me, she comes to the house to pick up the paperwork, sends me a copy of the submitted e-form, plus the e-filing pay-in-slip, and once paid forwards the revenue department receipt. Easy and no drama.

1 hour ago, Stocky said:

I pay an accountant in Hat Yai Bht2000 to do the filing for me, she comes to the house to pick up the paperwork, sends me a copy of the submitted e-form, plus the e-filing pay-in-slip, and once paid forwards the revenue department receipt. Easy and no drama.

Ignoring them and paying nothing even easier .......

5 minutes ago, BritManToo said:

Ignoring them and paying nothing even easier .......

True, that's a choice people can make, "up to you" as they say.

1 hour ago, BritManToo said:

Ignoring them and paying nothing even easier .......

some people love getting ripped off.

On 2/19/2026 at 11:23 AM, Bredbury Blue said:

The problem is it's in thai.

I was able to file my 2025 return online in English by right-clicking the mouse connected to my laptop and selecting the Translate To English option.

2 hours ago, Everyman said:

some people love getting ripped off.

Who's getting ripped-off exactly?

3 hours ago, OJAS said:

I was able to file my 2025 return online in English by right-clicking the mouse connected to my laptop and selecting the Translate To English option.

I also use Google Lens to translate the Thai, works well.

This is the second year I've filed my taxes online (pension only).

The previous tax return is automatically displayed, and you just need to make the changes. It's very quick and easy, no problem.

1 hour ago, federicoP said:

This is the second year I've filed my taxes online (pension only).

The previous tax return is automatically displayed, and you just need to make the changes. It's very quick and easy, no problem.

That didn't happen for me. I started again from scratch. It did however, remember some details I had entered last year, such as my wife's detaila.

Are you sure you "submitted" last year's return? and not just saved what you had entered.

Have you got a receipt of submission?

10 hours ago, Mutt Daeng said:

Are you sure you "submitted" last year's return? and not just saved what you had entered.

Have you got a receipt of submission?

Sure, I also paid online, I got the receipt of my payment and asked R.O. 21 (declaration of thax paid) and R.O. 22 (declaration of fiscal residence) that had sent to me by mail.
I did not look for a specific receipt of submission.

13 hours ago, federicoP said:

Sure, I also paid online, I got the receipt of my payment and asked R.O. 21 (declaration of thax paid) and R.O. 22 (declaration of fiscal residence) that had sent to me by mail.
I did not look for a specific receipt of submission.

OK. Thanks for the clarification.

On 2/21/2026 at 12:42 PM, federicoP said:

that had sent to me by mail.

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?