Regional Tax Comparison 2026

Spain's decentralised fiscal system means that income tax is shared between the central government and the autonomous communities. While the state portion of IRPF is identical everywhere (except the Basque Country and Navarre, which have their own complete tax systems), each of the 17 autonomous communities sets its own regional tax brackets and rates.

This creates meaningful differences in take-home pay depending on where you live. For workers considering a relocation within Spain, or expats deciding where to settle, comparing the regional tax impact on your specific salary level is a crucial factor alongside cost of living, job opportunities and quality of life.

The following table shows the approximate annual net salary difference for a single worker earning 40,000 EUR gross per year, compared to the national average. The figures illustrate the regional component of IRPF only and do not account for local deductions, cost of living, or other factors.

* The Basque Country and Navarre operate their own complete tax systems (see below). Direct comparisons require separate analysis.

Spain's fiscal decentralization includes two unique cases: the Basque Country (Pais Vasco) and Navarre. These regions operate under foral regimes (regimenes forales), meaning they have the constitutional right to collect and manage their own taxes independently of the central government. This arrangement dates back centuries and is rooted in historical agreements between these territories and the Spanish Crown.

Basque Country: the Concierto Economico

The three Basque provinces (Alava, Bizkaia, and Gipuzkoa) each have their own tax authority (Diputacion Foral) that sets income tax rates, brackets, and deductions independently. The tax brackets differ from the common regime and from each other. In general, Basque tax rates for moderate incomes (30,000 to 50,000 EUR) tend to be somewhat similar to the common regime, but with different personal deductions and family allowances. For higher incomes, the Basque system can be slightly more favorable. The Basque Country then pays a quota (the cupo) to the central government for shared services like defense and foreign affairs.

Navarre: the Convenio Economico

Navarre similarly manages its own tax system under the Convenio Economico. The Navarrese tax brackets and rates are set by the regional parliament and differ from both the common regime and the Basque provinces. Navarre tends to have slightly higher rates for medium incomes but offers generous deductions for families, housing, and certain investments that can offset this difference.

If you are an expat considering moving to either the Basque Country or Navarre, it is important to consult their specific tax rules, as the calculators for the common regime do not directly apply. Our regional comparison tool handles these foral regimes separately for accurate results.

Spain's current system of shared taxation between the state and the autonomous communities was established by the 1978 Constitution and refined through subsequent organic laws. The Constitution recognized the right of regions to financial autonomy, leading to a system where 50% of IRPF revenue is assigned to the community where the taxpayer resides, along with 50% of VAT revenue and a portion of excise duties.

This decentralization means that autonomous communities have progressively gained the power to set their own tax brackets for the regional portion of IRPF, introduce regional deductions (for housing, birth of children, education, and more), and even modify the tax base to some extent. Over time, this has led to increasing divergence in effective tax rates across regions, with some communities choosing to lower rates to attract residents and economic activity, while others maintain higher rates to fund more extensive public services.

The debate over regional tax competition is ongoing. Proponents argue that it allows communities to experiment with policies and gives citizens a choice. Critics contend that it creates inequities between regions and complicates the tax system unnecessarily. For workers and expats, the practical consequence is clear: where you live materially affects your take-home pay.

Your fiscal domicile (domicilio fiscal) determines which region's tax rates apply to you. It is based on where you spend the majority of the tax year (more than 183 days). Changing your fiscal domicile requires an actual, genuine relocation, not merely registering a new address. Here is what the process involves:

1. Move your actual residence: You must physically relocate to the new community and live there for the majority of the year.
2. Register on the municipal census (padron): Visit the town hall (ayuntamiento) of your new city and register your address on the padron municipal. This is the primary administrative proof of your residence.
3. Update your tax address with the AEAT: File Form 030 (Modelo 030) with the Tax Agency to update your fiscal domicile. This can be done online through the AEAT website with a digital certificate.
4. Notify your employer: Your employer needs your updated address to apply the correct regional withholding rates on your payslip.

Note that the tax authorities can challenge changes of fiscal domicile that appear to be motivated solely by tax avoidance without genuine relocation. If the AEAT determines that your actual center of economic or personal activity remains in the original community, they may reassign your fiscal domicile retroactively.

The rise of remote work has given many professionals the freedom to choose where they live without being tied to a specific office location. For remote workers in Spain, this opens up an interesting opportunity: you can select your region based not only on lifestyle preferences but also on the tax impact on your salary.

A case study: remote worker earning 55,000 EUR

Consider a remote software developer earning 55,000 EUR gross per year, single, no children. If this worker lives in Madrid, they benefit from the lowest regional IRPF rates in Spain, potentially saving over 1,000 EUR per year compared to living in Valencia or Catalonia. However, Madrid also has significantly higher housing costs, which may more than offset the tax savings.

Alternatively, a region like Castilla y Leon offers tax rates close to Madrid's but with dramatically lower living costs. Cities like Valladolid, Leon, or Salamanca provide good infrastructure, cultural amenities, and high-speed internet at a fraction of Madrid or Barcelona rental prices. For a remote worker, the combination of lower taxes and lower cost of living can result in substantially more disposable income.

Beyond income tax: other regional taxes

While IRPF is the most significant regional tax variation, other taxes also differ by community. Wealth tax (Impuesto sobre el Patrimonio) varies widely: Madrid effectively eliminates it with a 100% bonus, while Catalonia applies it with a high top rate. Inheritance and gift tax also varies enormously. If you have significant assets or expect to receive an inheritance, these additional regional tax differences should factor into your decision.

Our regional comparison tool focuses on the IRPF differences, which are the most relevant for salaried workers. For a complete fiscal picture, especially if you have investments, property, or other assets, consulting a tax advisor who understands the specific regulations of your chosen community is highly recommended.