US tax for Americans in Spain

A saving in Spain is not automatically a saving overall

The foreign tax credit is limited to foreign tax actually paid. Any Spanish regime that reduces what Spain collects therefore reduces the credit available on Form 1116 — and where the US tax on the same income is higher than the reduced Spanish tax, the US collects the gap.

That does not make the regime a bad idea. It makes it a decision that has to be modelled across both returns rather than elected on the strength of the Spanish number alone.

How the inbound regime works, and who it fits

The regime taxes qualifying Spanish employment income at a flat rate rather than the progressive scale, for the year of the move and the five following years, and it generally leaves foreign-source income outside Spanish tax. For a high earner the Spanish saving can be substantial.

It also changes your Spanish status in a way that matters for the treaty: someone taxed under the regime is treated broadly as a non-resident for Spanish purposes, which affects the residence certificate and the treaty positions available. Anyone electing it should understand that before, not after.

Modelo 720 is not FBAR, and neither replaces the other

Modelo 720 is Spanish reporting of assets held abroad. FBAR and Form 8938 are American, with their own thresholds and their own penalties. Filing one does nothing at all for the other, and an American in Spain with foreign accounts typically has all three obligations running at once.

The Modelo 720 penalty regime was found disproportionate by the Court of Justice of the European Union in 2022 and was rewritten afterwards. The filing obligation itself remains.

Spanish wealth tax credits nothing

Wealth tax is levied on net assets rather than on income, which puts it outside what Form 1116 recognises. It is a genuine cost with no American offset, and it surprises people who assume any Spanish tax must reduce the American bill somewhere.

The totalization agreement still does its job

Spanish social security sits inside the totalization agreement, so a self-employed American contributing in Spain generally escapes the 15.3% US self-employment charge — evidenced by a certificate of coverage. That part is unaffected by whichever income tax regime applies.

A worked example, tax year 2025

A single American on $520,000 of Spanish employment income, comparing the inbound regime's flat rate against the ordinary progressive scale. Spanish figures are illustrative; the US figures are computed.

IRC §901, §904 and §911; US–Spain income tax treaty and 2013 protocol; US–Spain totalization agreement; Spain's special regime for inbound workers under Article 93 of the Personal Income Tax Law; Modelo 720 reporting and the 2022 Court of Justice ruling on its penalty regime; IRS Publication 54; IRS Publication 514; Rev. Proc. 2025-32; 31 CFR 1010.350. US figures are tax year 2025. Checked 22 September 2026.