Wealth Tax and Solidarity Tax in Spain: A Guide for Foreigners

When a foreigner settles in Spain, buys a property on the coast, or starts a business, sooner or later they run into two tax figures that tend to cause confusion: the Wealth Tax and the so-called “Solidarity Tax” on large fortunes. Neither affects most expats, but anyone with substantial assets — a high-value home, an investment portfolio, a business of their own — needs to understand how they work before establishing tax residency in Spain, because the outcome depends on which region they live in.

The Wealth Tax: a national tax each region manages differently

The Wealth Tax (Impuesto sobre el Patrimonio, IP) taxes the net value of an individual’s assets and rights as of December 31 each year: property, bank accounts, investments, insurance policies, jewelry, boats, and so on. If you are a tax resident in Spain, it is calculated on your worldwide assets; if you are not, only on assets located in Spanish territory (typically, a property). Broadly speaking, tax residency is acquired by spending more than 183 days a year in Spain or by having the centre of your economic interests here, regardless of whether you already hold a NIE (the Foreigner Identification Number that any non-national needs to operate for tax purposes in Spain).

Although it is a national tax, the Spanish Tax Agency (AEAT, the body that administers taxes in Spain) delegates its regulation to the autonomous communities — the regions into which the country is territorially organized — which can set their own tax-free allowance, their own rebates, and even do away with it in practice. As a general rule there is a tax-free allowance of around €700,000 per person (a spouse or partner is assessed separately, which doubles that threshold for a married couple), plus an additional exemption for the main home. That “around” matters: several regions have raised their allowance or applied partial rebates, so it’s worth checking the rules currently in force in the specific region before assuming anything.

Madrid versus the rest: why where you set up residency matters

The most significant difference for a foreigner choosing where to settle is Madrid. The Community of Madrid applies a 100% rebate on the Wealth Tax liability, which in practice means a resident of Madrid pays no Wealth Tax at all, however large their assets. Other regions have followed similar paths with steep rebates or more generous allowances, while the rest maintain an effective tax burden that, at the highest brackets, can be significant. This disparity is no small detail: for years it drove many wealthy individuals, both Spanish and foreign, to establish residency in Madrid for this very reason. It is also the direct reason behind the second tax figure discussed below.

The Solidarity Tax on large fortunes: the national patch

The Temporary Solidarity Tax on Large Fortunes (Impuesto Temporal de Solidaridad de las Grandes Fortunas, ITSGF) is a national tax, not delegated to the autonomous communities, created so that the advantage of living in Madrid — or in another region with generous rebates — would not leave very large fortunes effectively untaxed. It applies from a net wealth threshold noticeably higher than the one for the Wealth Tax, in the region of several million euros, so it only affects genuinely large fortunes, not the average expat with a home or a modest investment portfolio.

Its key mechanism is that whatever you pay under the Wealth Tax is deductible from the Solidarity Tax liability. Anyone who already pays tax in their region isn’t taxed “twice”; they are simply required to reach, overall, the minimum level of taxation set at the national level. A Madrid resident, who pays no Wealth Tax at all, can still end up paying the Solidarity Tax if their assets exceed the threshold — which has taken away much of the appeal of choosing a region purely as a tax-saving strategy. For a non-resident with assets in Spain above that threshold, the tax can also apply to those assets, and it’s worth checking whether double-taxation treaties or special rules apply as a citizen of an EU or European Economic Area country.

At Zythos Business we help self-employed professionals, small businesses, and foreign individuals understand exactly which tax obligations actually apply to them in Spain — wealth tax included — and to plan ahead rather than scrambling at the last minute in response to an AEAT request. Wealth taxation changes frequently and varies by region, so before deciding where to establish residency or how to structure your assets, it’s worth reviewing your specific case with professional advice.