Convenio Doble Imposición Mexico España: How the Tax Treaty Works for Mexican Expats
Convenio Doble Imposición Mexico España: How the Tax Treaty Works for Mexican Expats
The fear that you will be taxed in both countries on the same income is one of the things that stops Mexicans from committing to Spain. It is a legitimate concern — but the Mexico-Spain double taxation treaty, signed in Madrid in 1992 and ratified by both countries in 1994, resolves it. Once you understand how it works, the tax picture for a Mexican living in Spain is often better than expected, particularly in the first six years.
What the Treaty Actually Does
The full name is the Convenio entre el Reino de España y los Estados Unidos Mexicanos para evitar la doble imposición en materia de impuestos sobre la renta y el patrimonio y prevenir el fraude y la evasión fiscal. Its core function: if you pay tax on a piece of income in one country, you are credited for that payment in the other country rather than taxed again.
This applies to income from employment, business activity, dividends, interest, royalties, rental income, and capital gains. The treaty specifies, for each type of income, which country has primary taxing rights.
Key principles for Mexicans living in Spain:
- Employment income is generally taxed where the work is physically performed. If you live in Spain and work remotely for a Mexican company, Spain has primary taxing rights over that income.
- Mexican-source income (rental income from a property in Mexico, dividends from Mexican company shares) may be taxed in Mexico, but Spain gives you a credit for the Mexican tax paid.
- Pensions are generally taxed in the country of residence, with exceptions for government pensions.
IRPF: What Spanish Income Tax Actually Looks Like
IRPF stands for Impuesto sobre la Renta de las Personas Físicas — Spain's personal income tax. Once you become a Spanish tax resident (spending more than 183 days per year in Spain), you are subject to IRPF on your worldwide income.
Standard IRPF rates for 2026 are progressive:
| Taxable Income | Marginal Rate |
|---|---|
| Up to €12,450 | 19% |
| €12,450 – €20,200 | 24% |
| €20,200 – €35,200 | 30% |
| €35,200 – €60,000 | 37% |
| €60,000 – €300,000 | 45% |
| Above €300,000 | 47% |
These are national rates. The autonomous communities (Madrid, Catalonia, Valencia, etc.) set their own additional tranche that applies on top of the national rate, so the total effective rate varies by region.
For context: Madrid's autonomous community rates are among the lowest in Spain, which is one reason many Mexican professionals choose it as their landing city.
The Beckham Law Exception
For most Mexicans arriving in Spain on a work or Digital Nomad Visa, the Beckham Law (Special Tax Regime for Displaced Workers, Régimen Especial de Trabajadores Desplazados a España) changes the equation substantially.
Under the Beckham Law, eligible new tax residents pay a flat 24% on Spanish-sourced income up to €600,000, rather than the standard progressive IRPF rates. Income above €600,000 is taxed at 47%. Foreign-sourced income — money earned from outside Spain — is generally not subject to Spanish income tax during the regime (subject to exceptions for dividends and interest).
The Beckham Law is available for the year of arrival and the following five years (six years total). For a professional earning €80,000 in Spain:
- Standard IRPF effective rate: approximately 33–35%
- Beckham Law rate: 24% on all income
That difference on €80,000 is roughly €8,000–€9,000 per year in additional take-home pay.
The regime must be actively requested via Form 149 within six months of registering with Spanish social security. It is not granted automatically.
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How Mexican Income Is Treated Under the Treaty
If you continue to receive income from Mexico while resident in Spain — freelance payments from Mexican clients, rental income from a Mexican property, dividends from a Mexican business — here is how the treaty applies:
Rental income from Mexico: Mexico has the right to tax this income at source. When you file your Spanish IRPF, you declare this income and claim a credit for the Mexican tax already paid (typically ISR at 25% for non-resident rentals, though this may change based on your Mexican tax status). Spain taxes the net difference.
Dividends from Mexican companies: Mexico may withhold at 10% under the treaty (reduced from the standard domestic rate). Spain credits this withholding against your IRPF liability on the dividend.
Self-employment income from Mexican clients: Under the Beckham Law, this foreign-sourced income generally falls outside Spain's IRPF during the six-year regime. Under the standard IRPF regime after the Beckham Law expires, you would declare it as worldwide income and credit Mexican ISR paid.
SAT and Spanish tax authorities: The treaty includes an information exchange provision. Both the SAT and Spain's Agencia Tributaria can request information from each other's systems. Underreporting Mexican income while resident in Spain is a compliance risk that the treaty's information exchange protocol makes increasingly visible.
Modelo 720: Declaring Mexican Assets
Any Spanish tax resident with foreign assets — including Mexican assets — exceeding €50,000 must file an annual Modelo 720 declaration. This applies to:
- Bank accounts in Mexico (BBVA, Citibanamex, Santander, etc.)
- AFORE pension fund balance
- Real estate in Mexico
- Investments and securities in Mexico (stocks, CETES, funds)
The Modelo 720 is an informational declaration, not a tax payment. It does not trigger any additional tax on its own. However, failing to file it when required carries significant penalties — historically among the most severe in Spanish tax law, though the European Court of Justice ruled in 2022 that some of Spain's original penalties were disproportionate and forced Spain to reform them.
Practical guidance: If your combined Mexican accounts, AFORE, and property values exceed €50,000, file the Modelo 720 annually during your Spanish tax residency. The filing window is January 1 to March 31 each year.
AFORE Contributions While in Spain
Your AFORE account in Mexico continues to exist regardless of where you live. If you are no longer contributing to IMSS (because you are using the bilateral social security agreement's Certificado de Cobertura), your AFORE balance stops growing through employer/worker contributions. However, the balance remains in the fund and continues to earn investment returns.
Under Mexican law, your AFORE is accessible at retirement age (currently 60–65 depending on your IMSS contribution history). Living in Spain does not forfeit your AFORE. However, once you withdraw AFORE funds, Mexico may apply ISR withholding depending on the amount and your tax resident status in Mexico at the time of withdrawal.
Practical Tax Filing for a Mexican in Spain
Your annual Spanish tax calendar:
- March 31: Modelo 720 (foreign assets declaration, if applicable)
- April–June: IRPF declaration for the previous tax year (Declaración de la Renta)
- Quarterly: IVA declarations if registered as autónomo
- Quarterly: Estimated tax payments if self-employed (Pagos Fraccionados)
Most Mexicans in Spain use a gestor (a local administrative professional similar to a tax preparer) or an asesor fiscal for their annual IRPF return, particularly in the early years when cross-border income is most complex. Fees for a basic IRPF filing with foreign income run approximately €150–€400 per year.
For a complete breakdown of the Beckham Law application process, how to structure your Mexican and Spanish income streams, and what to declare on Modelo 720 as a Mexican expat, the Mexico to Spain Work Visa Guide covers the full tax picture specific to the Mexican-Spain corridor.
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