Why it matters

Once you are a Spanish tax resident, you owe Spain income tax on your worldwide income — your U.S. salary, freelance income, investment returns, rental income, capital gains. All of it. Modelo 100 is how you report it, calculate what you owe, apply treaty credits for taxes paid to the U.S., and either pay the balance or claim a refund.

For most Digital Nomad Visa holders, Modelo 100 first appears in year two of Spanish residence: you arrive in Spain in 2025, become a tax resident by spending 183+ days there, and file your first Modelo 100 in April–June 2026 for the 2025 tax year. Your gestor prepares and files it on your behalf.

What Modelo 100 covers

  • Employment income (rendimientos del trabajo): Salary from your U.S. employer, PEO payments, or Spanish employer
  • Self-employment income (rendimientos de actividades económicas): Freelance and autónomo income
  • Capital gains: Gains from selling securities, property, or other assets
  • Investment income (rendimientos del capital mobiliario): Dividends, interest, and similar income
  • Real estate income: Rental income from Spanish or foreign property
  • Imputed income: A deemed income from Spanish property you own but do not rent (1.1% or 2% of cadastral value)

Progressive IRPF rates

Modelo 100 applies Spain's progressive income tax brackets, which combine the national rate and the regional (autonomous community) rate. The combined rate ranges from approximately 19% on the first €12,450 to 47% on income above €300,000. These rates apply to your worldwide income if you are a standard tax resident — which is why the Beckham Law flat 24% rate is so valuable for high earners.

Modelo 100 vs. Modelo 151

If you elect the Beckham Law special regime, you file Modelo 151 instead of Modelo 100. Modelo 151 applies the 24% flat rate to your employment income (up to €600,000) — including a salary from a U.S. employer, which the regime deems Spanish-source and taxes here. What stays outside Spanish tax is your foreign non-employment income (foreign dividends, interest, capital gains). Modelo 151 is generally more favorable for Digital Nomad Visa holders because it caps the rate on the salary at 24% instead of the progressive scale up to 47%.

The U.S. tax return interaction

You still owe the IRS an annual Form 1040 as a U.S. citizen, regardless of where you live. The key mechanisms that prevent double taxation are:

  • Foreign Tax Credit (Form 1116): Taxes paid to Spain on the same income creditable against U.S. tax liability
  • Foreign Earned Income Exclusion (Form 2555): Up to ~$126,500/year of foreign-earned income excluded from U.S. taxation (generally not compatible with Beckham Law elections, as Beckham exempts the income from Spain but FEIE is then harder to apply)
  • The U.S.-Spain Tax Treaty: Governs which country has primary taxing rights on various income types

The interaction between Modelo 100, Modelo 151, and Form 1040 requires a tax professional who understands both systems. A Spanish gestor handles the Spanish side; a U.S. CPA with expat experience handles the American side. They should coordinate.

Common mistakes

  • Assuming the Spanish filing date (April–June) aligns with the U.S. deadline. The U.S. filing deadline is April 15 (extended to June 15 for expats, October 15 with extension). These do not align perfectly. Plan for both.
  • Forgetting foreign income in Modelo 100. The return covers worldwide income. Omitting U.S. salary income is a common error that generates AEAT inquiries.
  • Not applying the Foreign Tax Credit correctly. Taxes paid to Spain appear on your U.S. return as a credit — but the calculation requires knowing your Spanish tax liability. The two returns need to be coordinated, not filed independently.

Only if you were a Spanish tax resident for any part of that calendar year — meaning you spent 183 or more days in Spain during that year. If you arrived in October, you may not have triggered tax residency in that year and would not file Modelo 100 for it. Your gestor assesses your residence status for each year and determines whether a filing obligation exists.

Yes. 'La Renta' or 'la Renta Anual' is the colloquial name for the annual income tax return process. Modelo 100 is the formal form name. When Spanish people say 'tengo que hacer la Renta,' they mean filing Modelo 100 with the AEAT.

No. Beckham Law electors file Modelo 151 instead of Modelo 100. The two forms serve the same function — annual income tax return — but Modelo 151 applies the special expatriate tax regime's 24% flat rate rather than the progressive IRPF brackets. You cannot file both in the same year.

Technically you can file it yourself via the AEAT's Renta online portal (with a digital certificate). In practice, for Digital Nomad Visa holders with U.S.-source income, foreign asset considerations, and potential treaty positions, self-filing without specialist review carries significant risk. The cost of a gestor handling your Renta is typically €150–€300 and is almost always worthwhile in years 1–3 of residency.