Spain has attracted a surge of American expats and digital nomads since expanding its Digital Nomad Visa in 2023, making it significantly easier for remote workers to obtain legal residency while maintaining foreign employment. Combined with Spain’s desirable Mediterranean climate, strong healthcare system, and EU residency pathway, Spain is now one of the most-searched destinations for Americans considering relocation in 2025–2026.
However, Spain’s tax system has some features that uniquely affect Americans: the aggressive Modelo 720 foreign asset declaration requirement (with steep penalties), the complex interaction between Beckham Law benefits and US citizenship-based taxation, and Spain’s income tax rates, which can exceed 45% for high earners once regional rates are added to the national scale. This guide explains every layer of US and Spanish tax obligations Americans face when moving to Spain.
Regardless of whether you live in Madrid, Barcelona, or Seville, your US tax obligations follow you. The United States taxes its citizens on worldwide income from all sources — Spanish salary, Spanish investment income, US dividends, foreign rental income — everything goes on Form 1040.
You must file US federal taxes every year. The overseas automatic extension gives you until June 15 (no need to request), with further extension to October 15 available by filing Form 4868. You still pay any taxes owed by April 15 — the extension is for filing, not payment.
If you are employed in Spain (or self-employed as a digital nomad), the FEIE via Form 2555 allows you to exclude up to $132,900 (2026) of foreign earned income from US taxable income. To qualify, you must meet either: the Physical Presence Test (330 days outside the US in any 12-month period) or the Bona Fide Residence Test (full tax year as a bona fide resident of Spain). FEIE does not apply to investment income — US dividends, capital gains, and interest remain taxable to the US.
As an alternative to FEIE, you can credit Spanish income taxes paid against your US tax liability on the same income. Under Beckham Law (24% flat), if your US marginal rate exceeds 24%, you will owe residual US tax on Spanish-source income. Example: American earning €120,000 in Spain under Beckham pays 24% Spanish tax; US taxes at 32% marginal rate; foreign tax credit covers the 24% paid to Spain; remaining 8% owed to the US. Under standard Spanish rates (up to 47%), foreign tax credits typically fully offset US taxes.
The Convention for the Avoidance of Double Taxation between the US and Spain (1990) covers employment income, pensions, dividends (generally 15% maximum, with lower rates for qualifying corporate shareholders), and interest and royalties (generally exempt from source-country tax under the 2013 Protocol, in force since 2019). The treaty includes a Saving Clause — the US retains the right to tax its citizens as if the treaty did not exist. Practical use: reduces Spanish withholding on US-source dividends and interest paid to Spain-resident Americans. Does not eliminate the need to file both US and Spanish returns.
American self-employed workers (freelancers, digital nomads) who work in Spain for Spanish clients must register as autónomos with Spain’s Social Security system. Monthly social security contribution: from roughly €205 at the lowest income tier, rising with net income. If working exclusively for non-Spanish clients (remote work), autónomo registration requirements under the Digital Nomad Visa route differ — you are employed or contracted by a foreign entity and may avoid Spanish autónomo registration while under the Digital Nomad Visa (though rules are evolving).
The Régimen Especial de Trabajadores Desplazados (RETD) — universally known as the Beckham Law after David Beckham famously used it when he signed with Real Madrid in 2003 — is Spain’s preferential tax regime for foreign workers relocating to Spain.
Since January 2023, remote workers who move to Spain under the Digital Nomad Visa are eligible for Beckham Law. This was a significant expansion. A US-based remote worker employed by a US company, who relocates to Spain under the Digital Nomad Visa and applies within 6 months, can elect 24% flat Spanish tax on their income earned from Spanish-territory work. Key nuance: under Beckham, income from working remotely for a foreign employer while physically in Spain may be considered Spanish-source, triggering the 24% Beckham rate on it. Structure varies; consult a Spanish tax advisor.
After 6 years, you transition to standard Spanish IRPF (progressive rates). The national top rate is 24.5% (above €300,000) and each region adds its own rate on top, so combined top rates can exceed 45% depending on the region. Plan your finances for this transition: the jump from 24% to 45%+ is significant, and many expats choose to relocate again at this point.
Modelo 720 is a Spanish informational declaration of foreign assets, introduced in 2013 as part of Spain’s tax transparency push. For Americans with US investment accounts, US property, US retirement accounts, and US bank accounts, Modelo 720 has serious implications.
Spanish tax residents (including Beckham Law beneficiaries — Beckham status does not exempt you from Modelo 720) who hold foreign assets individually or through controlled entities, exceeding €50,000 in any of three categories:
Most Americans moving to Spain will have US assets that trigger Modelo 720: a US 401(k) or IRA is generally not reportable while it is an accumulating pension plan (see the FAQ below); a US brokerage account (Vanguard, Fidelity) is Category 2; a US bank account above €50,000 is Category 1; US real estate is Category 3. You must disclose these to the Spanish tax authority (AEAT). The information is used to verify consistency with your Spanish tax return — income generated by those assets should be appearing on your IRPF (or Beckham return, where applicable).
Spain’s original Modelo 720 penalties (treating undeclared foreign assets as 150% taxable income gain + fixed penalties) were ruled disproportionate by the European Court of Justice in January 2022. Spain amended the law in March 2022 (Law 5/2022): penalties now follow the general regime for informational returns rather than the former confiscatory structure. However, penalties still apply — failure to file Modelo 720 when required is penalised under articles 198 and 199 of Spain’s General Tax Law, with fixed amounts per data item (confirm current amounts with the Spanish tax agency). Non-compliance remains a significant risk.
Understanding what triggers Spanish tax residency — and when — is critical for planning your year of arrival.
Spain considers you a tax resident if either: (1) you spend 183 or more days in Spain during a calendar year (sporadic absences count as time in Spain unless you prove tax residence elsewhere); or (2) Spain is the center of your economic or vital interests (where your main business activities are based, or where your spouse and/or dependent children reside). The US-Spain treaty’s tie-breaker rules can help resolve dual-residency claims.
Spain’s tax year is the calendar year and is not split: if you spend more than 183 days in Spain (or Spain becomes your center of economic interests) in the year you arrive, you are generally treated as a Spanish tax resident for the whole year, so income earned before arrival can also be in scope (subject to the treaty and any special regime such as Beckham). File Form 1040 for the full year (US taxes worldwide income regardless) and have a Spanish advisor confirm how the Spanish IRPF return treats the year of arrival. You will likely need a Spanish fiscal representative for your first Spanish filing. For the US return: the FEIE and foreign tax credits apply to the full year’s foreign income as earned.
The NIE (Número de Identidad de Extranjero) is your Spanish tax and identity number. Required for: opening a Spanish bank account; signing lease or purchase contracts; registering with Hacienda (Spanish tax authority); employment contracts in Spain; motor vehicle registration. Apply at: Spanish consulate in the US before moving (recommended); or at a Spanish National Police station after arriving. Processing times vary by office. After NIE: register with your local Ayuntamiento (city hall) via empadronamiento (municipal register) — registration helps with access to public services including healthcare, but Spanish tax residency is decided by the 183-day and economic-interest tests.
FBAR filing begins in the year your Spanish bank account(s) cumulatively exceed $10,000 at any point. If you move to Spain in July and open a BBVA account with $15,000, you must file FBAR for that tax year (due April 15 the following year). Do not wait until accounts have been open for a full year — the trigger is the balance at any single point during the year.
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