What actually comes out of a Spanish payslip
Income tax (IRPF) — progressive
Spain taxes employment income on a progressive scale (state + regional brackets — the exact rates vary by autonomous community). Your employer withholds IRPF from each payslip; the annual return (declaración de la renta, April–June) settles the difference. Official source: Agencia Tributaria.
Social security contributions
The employee side is a mid-single-digit percentage of gross (the employer pays a much larger share on top). It funds healthcare, unemployment and pension — the payslip's "Seguridad Social" line. Gross-to-net surprises for newcomers usually come from IRPF withholding, not SS.
Tax residency — the 183-day rule
Spend more than 183 days of the calendar year in Spain (or have your economic center there) and you're a Spanish tax resident, taxed on worldwide income — with double-taxation treaties preventing paying twice on the same income. Foreign-asset reporting (Modelo 720) applies above thresholds. Newly-arrived qualifying employees can look at the "Beckham" inbound regime (flat non-resident-style taxation for the first years) — strict conditions, apply early, professional advice recommended.
Common questions
What salary is "good" after tax in Spain?
Depends on bracket and region — but the pre-tax market is checkable: the salary calculator on this site shows what live ads advertise for your sector and level, which is the number you negotiate on.
The rest of the toolkit: the expat reference library · the live Working in Spain report · companies hiring right now. Compiled from official sources; corrections welcome.