US Expat Taxes in Spain: The Complete 2026 Guide

If you are a US citizen or green card holder living in Spain, you face tax obligations in both countries. The United States taxes its citizens on worldwide income regardless of where they reside, and Spain levies the Impuesto sobre la Renta de las Personas Físicas (IRPF) on the worldwide income of tax residents at progressive rates that reach up to around 47% when state and regional rates are combined (the exact top rate varies by autonomous community). Without proper planning, the same euro of income can be taxed twice.

This guide covers every layer of the US-Spain tax picture: the 1990 treaty and its 2019 protocol, FBAR and FATCA reporting for Spanish accounts, choosing between the Foreign Tax Credit and the Foreign Earned Income Exclusion, Spain's unique Modelo 720 foreign-asset declaration, the Beckham regime and its interaction with US taxes, the PFIC trap with Spanish investment funds, wealth tax exposure, Social Security coordination, key deadlines, and the most common mistakes US expats make.

The US-Spain Tax Treaty (1990, Protocol 2019)

The Convention Between the United States of America and the Kingdom of Spain for the Avoidance of Double Taxation was signed in 1990. A protocol entered into force in 2019 that updated withholding rates and modernized several provisions. Together they form the primary framework for preventing double taxation. For a broader overview of how US tax treaties operate, see our double taxation treaties guide.

Employment Income

Under the treaty, employment income is generally taxable in the country where the work is performed. If you live and work in Spain, Spain has the primary taxing right on your salary. The US also taxes it (citizenship-based taxation), but you can claim a Foreign Tax Credit on your US return for Spanish IRPF paid, which in most cases eliminates US tax on that income. See our dedicated FEIE vs. FTC comparison guide for a full analysis of which approach produces a better outcome for Spain-based expats.

Dividends and Withholding (Post-2019 Protocol)

The 2019 protocol reduced withholding rates on dividends. Dividends paid from a Spanish company to a US resident are generally subject to a maximum withholding of 15% (or a reduced rate for qualifying substantial shareholdings). File a W-8BEN or the applicable treaty claim form with your Spanish payor to claim the reduced rate.

Social Security: Taxable Only in Country of Residence

Under the treaty, US Social Security benefits are generally taxable only in the country of residence. If you are a Spanish tax resident receiving US Social Security, Spain has the right to tax those benefits and the US should not. Claiming this benefit on your US return requires attaching Form 8833 (Treaty-Based Return Position Disclosure).

The US-Spain Totalization Agreement

The US-Spain Social Security Totalization Agreement has been in force since 1988 and prevents workers from paying social security contributions to both countries simultaneously.

• If you are employed by a Spanish employer in Spain, you pay Spanish social security (Seguridad Social) and are generally exempt from US FICA taxes.
• If you are temporarily posted to Spain by a US employer (for up to 5 years), you can remain in the US system by obtaining a Certificate of Coverage from the SSA.
• If you are self-employed in Spain, you pay Spanish autónomo social contributions and are generally exempt from US self-employment tax.

The agreement also allows totalization of work credits from both countries. If you worked in both the US and Spain but did not accumulate the minimum credits required in either country alone, combined credits may qualify you for benefits in one or both systems.

FBAR for Spanish Accounts

If the aggregate maximum balance of all your foreign financial accounts exceeds $10,000 at any point during the calendar year, you must file an FBAR (FinCEN Form 114). You calculate the threshold by adding together the highest balance reached in each account during the year, converted to USD at the Treasury Department's year-end exchange rate.

For most US expats in Spain, this threshold is quickly exceeded. The following Spanish account types must be reported on the FBAR:

• Cuenta Corriente (checking accounts) at any Spanish bank — Santander, BBVA, CaixaBank, Sabadell, Bankinter, and others.
• Cuenta de Ahorro (savings accounts) — standard deposit savings accounts held at Spanish banks.
• Plan de Pensiones (private pension plans) — Spanish occupational and individual pension vehicles are reportable foreign financial accounts.
• Depósito a Plazo (term deposits / fixed-term deposits) — time-locked deposits at Spanish banks must be included in the aggregate calculation.
• Fondos de Inversión (investment funds) — reportable on the FBAR and, as discussed below, carry a serious PFIC problem on your US return.

The FBAR is filed electronically through the BSA E-Filing System, not with your US tax return. ExpatFolio tracks your Spanish account balances and alerts you when you approach the $10,000 threshold.

FATCA Form 8938: Specified Foreign Financial Assets

Beyond the FBAR, you may also need to file FATCA Form 8938 with your federal tax return. The thresholds for expats living abroad are higher than for domestic filers:

• Single filers living abroad: file if foreign financial assets exceed $200,000 on the last day of the year or $300,000 at any point during the year.
• Married filing jointly living abroad: thresholds are $400,000 on the last day of the year or $600,000 at any point.

Form 8938 covers a broader asset class than the FBAR and includes foreign securities, interests in Spanish entities, and financial instruments issued by foreign persons — not just bank accounts. You may need to file both the FBAR and Form 8938 for the same Spanish accounts. They are separate requirements with different filing procedures, thresholds, and penalty regimes.

Modelo 720: Spain's Foreign Asset Declaration

Modelo 720 is a Spanish tax obligation, entirely separate from any US filing requirement. It requires Spanish tax residents to declare overseas assets exceeding €50,000 in any of three asset categories:

• Category 1: Foreign bank accounts and deposits
• Category 2: Foreign securities, shares, life insurance policies, and pension rights
• Category 3: Foreign real estate

The €50,000 threshold applies per category. If your US brokerage account holds €55,000 in stocks, you must file Modelo 720 for Category 2, even if your US bank account holds only €5,000. If any category exceeds €50,000, that category must be declared. Subsequent years generally only require re-filing if balances increase by more than €20,000 since the last declaration or if an asset is disposed of.

A note on penalties:Spain's original Modelo 720 penalty regime imposed severe, disproportionate penalties — flat per-item fines plus a 150% surcharge on undisclosed asset values. In January 2022, the Court of Justice of the European Union (CJEU) ruled that this penalty regime violated EU law as it was disproportionate and contrary to free movement of capital. Spain subsequently reformed the penalties to align with general tax penalties under Spanish law. The penalty reform means the disproportionate sanctions no longer apply, but the filing obligation itself remains fully in force. US expats in Spain who hold US brokerage accounts, US real estate, US bank accounts, or US retirement accounts above the thresholds must declare them on Modelo 720.

Modelo 720 is due by March 31 of the year following the year being reported. It is filed electronically with the Spanish tax authority (Agencia Tributaria). Consult a Spanish tax advisor to ensure the declaration is complete and accurate.

Foreign Tax Credit vs. Foreign Earned Income Exclusion

US expats have two primary tools to reduce double taxation: the Foreign Tax Credit (FTC) on Form 1116 and the Foreign Earned Income Exclusion (FEIE) on Form 2555. For most Americans in Spain, the FTC is the stronger choice.

Spain's IRPF progressive rates — up to around 47% combined state and regional — typically exceed US marginal rates. When your effective Spanish tax rate exceeds your US effective rate, the FTC eliminates your US tax liability on that income and generates excess credits that can be carried forward for up to 10 years. The FEIE can exclude up to a substantial amount of foreign earned income (indexed annually) but does not reduce Spanish tax, does not help with investment income, and can paradoxically reduce the benefit of excess foreign tax credits in high-tax environments.

One important rule: you cannot apply both the FTC and the FEIE to the same income. You can elect different treatments for different income categories, but this requires careful analysis. Work with a cross-border tax advisor familiar with both Spanish IRPF and US tax to determine the optimal configuration for your situation. For a detailed breakdown of the trade-offs, see our FEIE vs. Foreign Tax Credit guide.

The Beckham Regime: A Trade-Off, Not a Free Lunch

Spain's régimen especial de impatriados— widely called the “Beckham law” after the footballer who famously used it — allows qualifying individuals who become Spanish tax residents to elect a special tax regime for up to six years. Under the regime, Spanish-source employment income is taxed at a flat rate of around 24% up to a certain threshold (higher amounts are taxed at a higher flat rate), and foreign-source income is generally outside the scope of Spanish income tax during the election period.

On the surface this looks attractive compared to progressive IRPF rates. However, there is an important interaction with US taxes that requires careful planning:

• The Foreign Tax Credit you can claim on your US return is limited to the actual Spanish income tax you pay. Under the Beckham regime, you pay less Spanish tax than you would under standard IRPF rules. This means there is less foreign tax to credit against your US liability.
• In some cases — particularly for higher earners — the reduction in Spanish tax under Beckham results in a net increase in total combined US + Spanish tax compared to the standard IRPF + FTC route.
• The interaction also depends on the type of income, your US filing status, and whether you have significant investment or passive income (which the Beckham regime treats differently).

The Beckham regime can be beneficial in specific situations — particularly for individuals with low passive income whose US tax rate happens to exceed the 24% Beckham flat rate. But it is not a blanket win for US citizens. Model both scenarios with a qualified cross-border tax professional before making the election, which is irrevocable for the duration of the regime.

The PFIC Trap: Spanish Fondos de Inversión

This is one of the costliest and least-known pitfalls for US expats in Spain. A Passive Foreign Investment Company (PFIC) is any non-US fund in which 75% or more of income is passive or 50% or more of assets produce passive income. Virtually all Spanish collective investment vehicles meet this definition:

• Fondos de Inversión (mutual funds, the most common Spanish retail vehicle)
• SICAV (Sociedad de Inversión de Capital Variable — variable capital investment companies)
• Spanish pension funds (Planes de Pensiones) to the extent they hold PFICs
• European UCITS ETFs domiciled in Luxembourg, Ireland, or Spain

There is a particular trap specific to Spain: Spanish tax law permits tax-free traspaso rollovers — switching from one fondo to another without triggering Spanish capital gains tax. This is a legitimate and widely used Spanish tax-deferral technique. For a US person, however, each traspaso is a taxable PFIC disposition. You are selling one PFIC and buying another, and the IRS treats the sale as a realization event under the default Section 1291 regime, regardless of the Spanish tax treatment.

The Section 1291 default PFIC regime is punitive: gains are spread over your entire holding period, taxed at the highest marginal rate applicable in each year, and an interest charge is added on top. Effective tax rates on PFIC gains can exceed 50-70%. The alternative elections — QEF (Qualified Electing Fund) and mark-to-market — require annual Form 8621 reporting for each PFIC owned and have their own complexity.

The simplest solution: do not purchase Spanish or European investment funds. Instead, hold US-domiciled ETFs (such as those from Vanguard, iShares, or Schwab) in a US brokerage account. These are not PFICs, receive favorable US capital gains tax treatment, and can be held alongside a Spanish bank account without issue. ExpatFolio flags any holdings that may be classified as PFICs so you can take action before tax season.

Spain's Wealth Tax and Solidarity Tax

Spain levies an Impuesto sobre el Patrimonio (wealth tax) on the net wealth of tax residents above certain thresholds. The specific rates and exemption amounts vary significantly by autonomous community — some regions (such as Madrid) have historically offered a 100% regional bonification that effectively reduced the tax to zero for Madrid residents, while other regions apply it in full. In recent years, the Spanish government introduced a national solidarity tax on large fortunes(Impuesto Temporal de Solidaridad de las Grandes Fortunas) as a backstop applicable to high-net-worth individuals in regions that had eliminated the wealth tax regionally.

US expats in Spain should be aware that their worldwide assets — including US brokerage accounts, US real estate, and US retirement accounts — may be counted when calculating Spanish wealth tax exposure, subject to treaty analysis and regional rules. The interaction between the US-Spain treaty and Spanish wealth tax is complex; consult a Spanish tax advisor with cross-border experience.

It is worth noting that US estate and gift tax treaties with Spain are separate instruments. The wealth tax itself is not directly offset by any US mechanism.

Key Deadlines

• April 15: Standard US federal tax return deadline. If you owe tax, payment is due by this date even if you file an extension. Interest accrues from April 15 on any unpaid balance.
• June 15: Automatic 2-month extension for US citizens and resident aliens living abroad. No form required, but attach a statement to your return explaining you qualify. Interest still accrues from April 15 on unpaid amounts.
• October 15: Extended deadline for those who file Form 4868 by April 15. Most expats use this deadline to wait for finalized Spanish tax figures before computing the Foreign Tax Credit.
• April 15 / October 15 (FBAR): The FBAR (FinCEN 114) deadline is April 15 with an automatic extension to October 15. No form is required for the FBAR extension.
• March 31: Spanish Modelo 720 deadline for declaring foreign assets held during the prior calendar year.
• April – June: Spanish IRPF declaration period (exact window varies slightly each year; online filing typically opens in April).

Common Mistakes US Expats Make in Spain

• Not filing a US return at all: Living in Spain does not exempt you from US filing obligations. US citizens and green card holders must file if income exceeds the standard filing thresholds, regardless of where they reside.
• Forgetting the FBAR: A single Spanish checking account combined with a savings account can easily exceed the $10,000 aggregate threshold. Non-willful failure-to-file penalties can reach $10,000 per violation.
• Ignoring Modelo 720: Many US expats are aware of FBAR but unaware that Spain has its own separate foreign-asset reporting obligation with different thresholds and categories. Both must be filed when applicable.
• Assuming the Beckham regime is always beneficial: As discussed above, the Beckham regime can increase total combined US + Spanish tax for US citizens in certain income profiles. Do not elect it without modeling both scenarios.
• Buying Spanish fondos de inversión: Spanish investment funds are PFICs, and Spain's popular traspaso rollover — tax-free under Spanish law — triggers a taxable PFIC disposition for US persons. The consequences can be severe.
• Using the FEIE in a high-IRPF situation: In most cases, the Foreign Tax Credit produces a better outcome than the FEIE for Spain-based expats because Spanish IRPF rates often exceed US rates.
• Overlooking Spain's wealth tax: US expats with significant worldwide assets may be subject to Spanish Impuesto sobre el Patrimonio or the solidarity tax. This is not offset by any US credit mechanism.
• Not coordinating Spanish and US filing timelines: The Foreign Tax Credit on your US return should use finalized Spanish tax figures. File your Spanish IRPF return (or at least finalize the numbers) before preparing your US Form 1116 Foreign Tax Credit calculation. Most expats take the October 15 US extension precisely for this reason.

The US-Spain tax picture is more layered than most European countries — the Modelo 720, the Beckham regime interaction, the PFIC traspaso trap, and potential wealth tax exposure all compound the standard FBAR/FATCA obligations every US expat faces. Keep your investments in US-domiciled funds, track your Spanish accounts carefully for both FBAR and FATCAcompliance, use the Foreign Tax Credit as your primary double-taxation tool, file Modelo 720 by March 31, and work with a tax professional who holds expertise in both Spanish IRPF and US international tax. For a comparison of how Spain's obligations stack up against France, see our US expat taxes in France guide.