What it's for (and what it's not)
A double taxation treaty is an agreement between two countries that prevents the same income from being taxed twice. The one between Spain and Thailand has been in force since 1997. It does two things: splits taxing rights (decides whether Spain, Thailand, or both with a limit, taxes a given income) and provides a method to correct double taxation when both have a claim (exemption or deduction for tax already paid in the other country).
What it doesn't do: create a blanket exemption. Living in Thailand being cheaper comes from its rates —brackets from 0 to 35% covered in the tax guide— not from a treaty loophole.
Income by income
| Type of income | Usually taxed in | The nuance |
|---|---|---|
| Spanish public pension | Spain, generally | Private pensions and plans have different rules |
| Salary / employment | Where the work is performed | Remote for a foreign employer as a TH resident → taxed in TH |
| Rental income from Spanish property | Spain (non-resident tax, modelo 210) | 24% on gross for non-EU residents |
| Dividends and interest | Split with a withholding limit | Worth fine-tuning where it counts |
| Capital gains on property | Where the property is located | Selling your Spanish apartment is taxed in Spain |
The practical reading: when you move, your bill doesn't depend on "living in Thailand" in the abstract, but on what your income is made of. A retiree with a public pension barely notices the change; a remote worker billing foreign clients does; someone keeping apartments in Spain still has one foot in the tax agency via non-resident tax.
The prerequisite: being a Thai tax resident
The treaty only helps you if you've genuinely changed your tax residency. That starts with the 180-day rule in Thailand and with exiting Spanish tax residency properly. With the Thai tax residency certificate in hand, the treaty applies cleanly; without it, Spain can keep considering you its own and the split doesn't work in your favor.
Where Bexpat fits in
We explain the map —this— and handle the full move (visa, flight, arrival and apartment). To find out which visa fits your case, the test points you in the right direction in a minute.
Frequently asked questions
Is there a Spain-Thailand treaty?
Yes, in force since 1997. It splits which country taxes each income and prevents the same income from being taxed twice. It applies to anyone with tax ties to both countries.
Where is my pension taxed?
As a general rule, Spanish public pensions keep being taxed in Spain even if you're resident in Thailand. Private pensions and pension plans have different nuances depending on the type.
Will I pay nothing in either country?
No: the treaty prevents double taxation, it doesn't exempt you from paying. It splits taxing rights and provides methods to correct it. The real savings come from Thai rates, not the treaty itself.