Why Thailand pencils out
Spain has one of the highest income-tax rates in Europe: the marginal rate reaches up to 47% (more in some regions), and on top of that there's a wealth tax. Thailand plays by different rules. It applies territorial taxation: in principle you're only taxed on what you earn inside the country or on what you remit (bring) into Thailand. Foreign income you leave outside isn't taxed there — which is why controlling what you bring in is the lever that decides how much you pay.
On what is taxable, Thai income tax runs in brackets from 0 to 35%, there's no wealth tax, and capital gains from crypto on local exchanges are exempt until 2029. The math really does change, but it isn't automatic: it depends on your type of income, the 180-day rule and the treaty with Spain. The starting point is understanding how taxes work in Thailand.
| Spain | Thailand | |
|---|---|---|
| Income tax (top rate) | up to 47% | 0 – 35% |
| System | Worldwide income | Territorial (remittance) |
| Wealth tax | Yes | No |
| Crypto gains (local) | Taxed | Exempt until 2029 |
| Tax resident if… | > 183 days | ≥ 180 days |
The rule that decides everything: 180 days
Everything revolves around days. You're a Thai tax resident if you spend 180 days or more in the country during the tax year; you stop being a Spanish tax resident once you spend fewer than 183 days in Spain and move your centre of life there. When both countries could consider you a resident, the 1997 double-taxation treaty breaks the tie. We cover this in depth in the 180-day rule.
Leaving the Spanish tax system without surprises
Leaving isn't just buying the ticket. The Spanish tax authority looks at your economic centre of interests and your family base, not just the calendar. A properly formalised exit means consular deregistration, Modelo 030, a Thai tax-residency certificate, and a folder of evidence proving your life is now there. The step-by-step is in ending Spanish tax residency: the orderly exit.
What you can't afford to forget
- Exit tax: the departure tax on unrealised gains. It has high thresholds and hits almost no one — who it actually affects.
- Modelo 720 and 721: the declaration of foreign assets and crypto, with its trap in the year you leave.
- If you rent out your flat in Spain: you move to non-resident tax (IRNR) and Modelo 210 — how the numbers change.
- Transparency (CRS/CARF): Spain and Thailand exchange your financial information, so hiding was never the strategy.
- Crypto: what to do with your wallets and exchanges before leaving Spain.
The visa that makes it possible
None of this works without a legal basis to live there. For most foreign income, the DTV visa (5 years, for nomads and remote work) is the natural route; there are others depending on your case. Compare them all in the visa guide or check out the DTV in depth. And if you ever move back, the Beckham law lets you pay a flat 24% for a few years.
Every case is different: your mix of income, your years of residency and what you decide to remit change the math entirely. That's where the fine-tuning happens. The first call, to see if your move is viable and put numbers on it, is free.