Is a Roth IRA taxed in Spain?

Of all the surprises waiting for a well-prepared American retiree in Spain, the Roth IRA is the sharpest — precisely because it catches the people who did everything right. You contributed after-tax dollars for years, watched the account grow, and told yourself the withdrawals would be tax-free for life. In the United States, they are. In Spain, they generally are not. And unlike almost every other line on your retirement statement, the Roth carries no built-in relief: the mechanism that usually stops cross-border income being taxed twice does nothing here, for a reason that is worth understanding before you draw a single euro.

This page is written for US retirees moving to Spain on the non-lucrative visa, and it goes one level deeper on the Roth than our broader note on how US retirement income is taxed in Spain, which walks through every income source in turn. Here we stay on the Roth: how Spain classifies it, why the treaty leaves Spain with the taxing right and no credit to offset it, how a Roth 401(k) fits in, and the timing decisions — conversions and withdrawals — that are far better made before you become a Spanish resident than after. None of this is tax advice; it is general orientation, and your own figures belong with a Spanish asesor fiscal and a US tax adviser working together.

"The Roth is the account I most wish people asked about before they came, not after. Clients arrive certain it is untouchable, and it is — in America. In Spain there is tax and, unlike the 401(k), nothing to credit it against. The good news is that the months before you become resident are genuinely useful: with a little planning around conversions and withdrawals, most of the sting can be managed. Waiting until your first Spanish return is filed is the one thing that closes those doors."

Why the Roth's tax-free status stops at the border

A Roth IRA is a bargain struck with the United States government, not a universal property of the money inside it. You pay income tax on the contributions in the year you make them; in exchange, US law promises that qualified distributions — contributions and growth alike — come out tax-free. That promise binds the IRS. It does not bind the Spanish Agencia Tributaria. Spain has no equivalent domestic wrapper that it is obliged to recognise, and nothing in Spanish law says a foreign account that was tax-favoured at home must be tax-favoured here.

So once you cross the threshold into Spanish tax residency — broadly, more than 183 days in the country in a calendar year, or your main centre of economic interests in Spain, as covered in our note on the 183-day residency rule — Spain taxes your worldwide income, and a Roth distribution is simply income you received as a resident. The fact that you already paid US tax on the way in earns you nothing on the Spanish side. This is the mirror image of the mental model most Americans arrive with, and it is the single reason the Roth deserves its own page rather than a footnote.

How Spain classifies a Roth distribution

Here is where the Roth parts company with the rest of your retirement income. Spanish personal income tax — IRPF — splits income into a general base (employment income, pensions and pension-type distributions, taxed on a progressive scale) and a savings base (dividends, interest and capital gains, taxed on its own lower set of bands that for 2026 begin at 19%). A traditional 401(k) or IRA is generally treated as pension-type income and lands in the general base. A Roth IRA distribution, by contrast, is generally treated by the Spanish authorities as investment income — savings income — rather than as exempt pension income.

That classification cuts two ways. On one hand it means the Roth is unambiguously taxable in Spain, not quietly exempt as many hope. On the other, savings-base rates are typically lower than the top of the general scale, so a Roth withdrawal is often taxed more gently than an equal-sized traditional 401(k) drawdown would be. It is small consolation for losing a tax-free account, but it matters for planning: a Roth and a traditional IRA of the same size do not produce the same Spanish tax, and they do not stack in the same pot. Because the precise characterisation can turn on the detail of your account and how a distribution is documented, treat the savings-income treatment as the working assumption to confirm with your adviser, not a certainty to bank on.

The real sting: no foreign tax credit to rescue you

For almost every other source of retirement income, the double-tax machinery quietly does its job. Take a traditional 401(k): Spain taxes it as a resident, the US taxes it too under the treaty's saving clause, and the US foreign tax credit lets the Spanish tax you paid offset the US tax on the same dollars — so a US citizen usually is not taxed twice over. The credit works because there is US tax there to be offset.

The Roth breaks that pattern. Under the US-Spain treaty, this kind of income is generally taxable only in the country of residence, so Spain has the taxing right. But the United States charges nothing on a qualified Roth distribution. There is no US tax for a Spanish credit to reduce, and no US tax against which the Spanish tax could be credited. The relief mechanism has nothing to grip. The consequence is stark: the Spanish tax on your Roth is often a pure, additional cost with no offset anywhere in the system — the opposite of the reassuring "you won't pay twice" story that holds for the rest of your income.

It is worth being precise about what fails here, because the same word — credit — behaves very differently one account over. When you inherit a traditional IRA and live in Spain, the United States does tax every distribution, both countries tax the same money in the same year, and the credit machinery works exactly as designed. What you lose there is rate, not relief. The Roth is worse precisely because the American planning succeeded: the zero that makes it beautiful in Delaware is the zero that leaves nothing for the credit to hold in Málaga.

The Roth is not the only account where this happens. Any asset the United States deliberately taxes at zero arrives in Spain undefended, for exactly the same reason — which is why a founder sitting on a Section 1202 QSBS business sale faces the identical trap at a far larger scale. The general rule is worth carrying with you: the better your US tax result on an asset, the more exposed it is to Spain.

One qualification worth knowing, because it stops the rule from becoming a superstition. A credit can also fail when the United States does tax the income — if the two countries tax it in different years. That is what happens with Series EE and I savings bonds, where US law forces the whole accrual into income at final maturity whether or not you cash the bond, while the Spanish charge follows redemption. It is also what happens with company stock taken out of a 401(k) under the NUA rules, which is the only asset we have found that walks through both doors of the trap at once: the US excludes the appreciation from income in the year of the distribution, and then taxes it years later when the shares are sold. Both countries tax it, both are correct, and the relief still has nothing to match. So the trap has two doors: an asset the US taxes at zero, and an asset the two systems tax in different tax years.

Roth IRA vs traditional 401(k)/IRA in Spain

It helps to see the two side by side, because the instinct that "retirement money is retirement money" is exactly what leads people astray. The traditional accounts and the Roth are taxed under different rules, in different IRPF bases, with different relief available.

The line that surprises people most is the relief row. On a traditional account the cross-border system is broadly self-correcting; on a Roth it is not, and the difference can be worth a great deal over a retirement. This is also why the order in which you draw on your accounts matters so much once you live in Spain — the Roth and the traditional IRA behave nothing alike inside a Spanish return.

Roth 401(k) and the basis-versus-growth question

Two further wrinkles catch people out. First, the Roth 401(k): a workplace Roth is built on the same after-tax logic as a Roth IRA, and the same core problem follows it into Spain — the US promise of tax-free withdrawals does not oblige Spain. Whether a Roth 401(k) is characterised in exactly the same way as a Roth IRA for Spanish purposes is a technical point for your adviser, but you should not assume the "Roth" label carries any Spanish exemption in either form.

Second, the question of what Spain taxes — the whole distribution or only the growth. Because you contributed after-tax dollars, an intuitive argument says only the accumulated earnings should be taxable in Spain, with your original contributions treated as a return of already-taxed capital. In practice, whether and how Spain distinguishes contributed basis from growth on a foreign Roth is not something to take for granted, and different advisers approach the documentation of it differently. The safe posture is to keep meticulous records of your contribution history and to have the treatment modelled specifically, rather than assuming Spain will carve your basis out for you.

Wealth tax and reporting: the account still shows up

Even in a year you take no distribution, the Roth does not vanish from the Spanish picture. Its full market value is generally included in the Spanish wealth tax base, and for a resident with a substantial balance that can be enough to cross the regional threshold and trigger an annual liability. Because wealth-tax allowances and rates vary sharply by autonomous community — Andalucía, for instance, applies a broad regional relief that many other regions do not — where you settle changes the answer, and our note on wealth tax by region covers that variation.

On the reporting side, a Roth held abroad is generally declarable on Spain's Modelo 720 informational return once the relevant balance exceeds €50,000, and the penalties for getting the informational side wrong have historically been severe, so this is not a corner to cut. On the US side, US citizens continue to report the account on Form 8938 where the thresholds are met. If the Spanish reporting exercise is the moment you realise earlier US returns or foreign-account reports were missed, stop before filing piecemeal catch-up forms and read the Streamlined Foreign Offshore catch-up route for non-willful taxpayers abroad. The Roth, in short, generates obligations on both sides of the Atlantic even before you touch it — a reminder that the two systems have to be run together, not in isolation.

Timing: convert and withdraw around the move

Everything above points to the same practical conclusion: for the Roth, when you act can matter more than anything else. While you are still a US tax resident, a qualified Roth distribution is genuinely tax-free — Spain has no claim on it until its worldwide taxing right switches on. That opens a planning window in the months before you move. For some retirees the answer is to draw down the Roth, or complete Roth conversions — including backdoor and mega-backdoor conversions — before becoming resident in Spain, capturing the US tax-free treatment while it is still available. For others — particularly those who may leave Spain again within a few years — the better path is to leave the Roth untouched during the Spanish years and resume tax-free withdrawals after departure. The wealth-tax exposure on the balance has to be weighed in the same breath, because a large Roth can cost you annually even while you sit on it.

There is no single right answer, and the wrong one can be expensive, which is exactly why the Roth is the account we most want to look at before a client moves rather than after their first Spanish tax year has closed. The immigration timeline of the non-lucrative visa and these tax turning points can be lined up deliberately — the year you land, the year you convert, the year you draw — so that the move and the money are planned as one rather than colliding by accident. We do that alongside your US adviser, so both returns tell the same story.

Sources reviewed July 2026: the United States–Spain income tax treaty and published summaries of its pension, other-income and residence articles and its saving clause; Spanish AEAT guidance on IRPF residence, on the general and savings bases and on the taxation of foreign-source income; the Modelo 720 informational reporting regime and Spanish wealth-tax rules with their regional variation; and published Spanish tax-practitioner commentary on the treatment of Roth IRA distributions as investment income for Spanish residents. General information only, not legal, tax or immigration advice, and not US tax advice; treaty treatment, IRPF classification and rates, regional variations and the position of Roth accounts change and should be confirmed with a qualified Spanish asesor fiscal and a US tax adviser before you rely on them.