Income–Wealth Joint Limit in Madrid

If you are resident in Madrid and hold significant wealth, the income–wealth joint limit is probably the most effective —and most underused— tool for legally reducing your bill for Spanish Wealth Tax (IP) and the Solidarity Tax (ITSGF). This guide analyses exactly how the 60% shield works, how it applies specifically in Madrid, and what the figures look like in a real case.

The goal of a sound joint-limit analysis is clear: to ensure that the sum of what you pay in income tax and on your wealth does not become confiscatory, using every cap, exclusion and regional rule in your favour.

What the income–wealth joint limit is

The joint limit (often called the wealth-tax "shield" or 60% cap) is set out in Article 31 of Spain's Wealth Tax Act (Ley 19/1991). Its purpose is to prevent taxation of wealth from becoming confiscatory for someone who owns a large estate but earns a moderate income. The rule is simple to state and powerful in effect:

1. You add the gross income-tax liability (IRPF) and the gross Wealth Tax liability (IP).
2. That sum may not exceed 60% of the personal income-tax base (general base plus savings base).
3. If it does, the Wealth Tax liability is reduced by the excess.
4. But the reduction is capped: it can never exceed 80% of the Wealth Tax liability. In other words, you always pay at least 20% of the Wealth Tax.

One decisive nuance, frequently misapplied: the calculation excludes the part of the savings base arising from capital gains on assets held for more than one year, together with the income tax attributable to them (Art. 31.Uno.a). This prevents the year you sell a long-held asset —with an extraordinary gain— from artificially inflating your income-tax base and destroying the shield. A proper joint-limit analysis begins precisely by isolating which income counts and which does not.

How it interacts with the Solidarity Tax (ITSGF)

The Temporary Solidarity Tax on Large Fortunes (ITSGF), created by Law 38/2022 and extended indefinitely, taxes net wealth above €3,000,000 at 1.7%, 2.1% and 3.5%. The good news is that the same 60% shield extends to the ITSGF: the combined IRPF, IP and ITSGF liabilities likewise may not exceed 60% of the income-tax base, with the identical 80% cap on the reduction of the ITSGF liability.

In addition, to avoid double taxation, the Wealth Tax actually paid is deducted from the ITSGF (paragraph Fifteen of Law 38/2022). In practice, what you pay in IP is subtracted from what you would owe in Solidarity Tax. That is why the order of operations —first the joint limit, then the IP deduction— is decisive, and why a faulty calculation can cost tens of thousands of euros.

The joint limit in Madrid

The Region of Madrid applies a 100% rebate on the Wealth Tax, so its residents have historically paid no IP. However, since Madrid's Law 12/2023, and for as long as the ITSGF remains in force, that rebate is reduced: the taxpayer pays in IP exactly the amount they would otherwise remit to the State as Solidarity Tax, so the revenue stays in Madrid and the ITSGF payable falls to zero.

Here the joint limit matters twice over: because the amount a Madrid resident pays is anchored to the ITSGF liability, cutting that liability through the 60% shield directly cuts what is paid. For estates with moderate income, a rigorous analysis can bring the bill down to the 20% floor.

Worked example in Madrid

Consider an illustrative case, computed with the scales in force in Madrid and the joint-limit rule. The figures are indicative and depend on the precise composition of income and wealth:

Indicative calculation using the scales in force; it does not replace an individual study.

Optimisation strategies that follow from the analysis

A well-prepared income–wealth joint-limit analysis lets you act, legally, on the two quantities that drive the shield —the income-tax liability and base:

• Clean up the income-tax base: correctly identify and exclude capital gains on assets held more than one year, which do not count towards the limit.
• Time the realisation of gains: the year a gain is realised changes the limit; bringing it forward or deferring it changes that year's wealth-tax bill.
• Review the family-business exemption: qualifying business assets are exempt from IP and ITSGF, shrinking the starting base.
• Study tax residence: between regions with and without a rebate, the combined IP + ITSGF + joint-limit effect varies dramatically.
• Structure the portfolio: the mix between income-producing and non-income assets affects the income-tax base that triggers the shield.

Common mistakes

• Computing the limit as 60% of the income-tax liability instead of 60% of the base.
• Failing to exclude capital gains held > 1 year, losing the shield in the year of a large sale.
• Forgetting the 80% cap (20% floor) and assuming the IP can fall to zero through the limit.
• Applying the IP deduction within the ITSGF before the joint limit, distorting the result.
• Ignoring the regional rules (exempt minimum, own scale, rebate) when combining the calculation.

Why you need a professional analysis

The joint limit chains three taxes (IRPF, IP and ITSGF), national and regional rules, and technical exclusions that change the result entirely. In Madrid, where the rebate is adjusted to the ITSGF, an incorrect application can mean overpaying —or losing the shield through a computation error. At SALAMA LEGAL we prepare an individual analysis using the figures from your return, legally optimise your wealth-tax bill and assist you with filing.