Spain's payroll-tax system splits the income-tax component (IRPF) into a state portion and a regional portion that varies materially across the 17 comunidades autónomas. The calculator above applies the 2025 IRPF brackets, Seguridad Social contributions, and personal/family minimums published by Agencia Tributaria, then layers the autonomic schedule for the region you select. Each deduction is itemised so English-speaking expats and offers-comparers can see exactly how a gross salary in Madrid differs from the same gross in Catalunya or Andalucía.
IRPF — state and autonomic schedules
Spanish income tax (IRPF, Impuesto sobre la Renta de las Personas Físicas) is built from two parallel parts: the national (estatal) schedule and the regional (autonómico) schedule, each contributing to your total marginal rate. The state portion has five brackets in 2025: 9.5% up to €12,450, 12% up to €20,200, 15% up to €35,200, 18.5% up to €60,000, and 22.5% above €60,000.
The regional portion varies. Madrid, Catalunya, Comunitat Valenciana, Andalucía, and Galicia have their 2025 autonomic schedules implemented from published values. The other 10 common-régimen autonomous communities fall back to the state schedule for the autonomic half (within ±1% per band of their published values). País Vasco and Navarra operate forales (separate tax systems) which the calculator approximates with a clear caveat — for an exact figure in those regions, the regional tax authority's own simulator is required.
Seguridad Social contributions
Employee social-security contributions for 2025 break down into four components on a contribution base (base de cotización) capped at €4,909.50 per month (€58,914 annually):
• Common contingencies (jubilación, invalidez, enfermedad común): 4.82% • Unemployment (desempleo): 1.55% • Vocational training (formación profesional): 0.10% • MEI (Mecanismo de Equidad Intergeneracional): 0.12%
The combined employee rate is ~6.59% of base salary up to the cap. Above the cap, no additional Seguridad Social applies. Minimum bases vary by professional category; for full-time salaried employees in category 1, the 2025 minimum is €1,929/month.
Personal and family minimums (mínimo personal y familiar)
Spanish IRPF allows a deduction from the tax due (cuota íntegra) to cover basic living costs. The 2025 personal minimum is €5,550 for taxpayers under 65. It increases with age (+€1,150 at 65, +€1,400 at 75) and with dependents (€2,400 for the first child, €2,700 for the second, €4,000 for the third, €4,500 for the fourth and beyond).
The calculator applies the personal minimum baseline (single filer, no dependents). If your family situation includes dependent children or elderly relatives, your actual withholding will be lower than displayed.
Regional variation across 17 autonomic communities
Spanish take-home varies meaningfully by autonomic community because the autonomic IRPF schedule is set independently by each comunidad. At €40,000 gross, the difference between the highest-tax community (typically Catalunya) and the lowest (Madrid) can exceed €1,500 per year in net pay — entirely from autonomic-rate differences. Common patterns at €40k: • Madrid: lower autonomic rate (top marginal ~21.5%) • Catalunya: higher autonomic rate (top marginal ~25.5%) • Andalucía: middle (recently reformed downward)
Foral regions (País Vasco, Navarra) have entirely separate tax systems; the calculator returns an approximation marked with a caveat in the result. For exact foral figures, use the regional tax authority's own simulator (Diputación Foral or Hacienda Foral).
What the calculator does NOT cover
Not modelled in v1: joint filing (tributación conjunta) for married couples — the calculator assumes individual declaration; autonomic-specific deductions for primary residence, education expenses, or cultural patronage (each comunidad publishes its own); pension-plan contribution reductions (planes individuales reduce taxable income by up to €1,500 per year in 2025); in-kind compensation (meal vouchers, company car, employer health insurance); and special tax regimes including the Beckham Law for inbound expatriate executives.
The calculation applies the standard Trabajador por Cuenta Ajena (TCA) regime for a Spanish fiscal resident. Self-employed workers, non-residents, and any special-regime participant should treat this result as a starting estimate only.