Autónomo calculator: 2026 contributions and tax deadlines
For self-employed people in Spain. Enter your net monthly earnings to see which contribution bracket you fall in, and keep the quarterly filing windows in your calendar.
Monthly Social Security contribution
Your income minus deductible expenses, averaged per month, as Social Security counts it.
2026 filing windows
Modelo 303 (VAT) and Modelo 130 (income tax prepayment) share the same windows.
Q1 2026
1 April 2026 to 20 April 2026
Q2 2026
1 July 2026 to 20 July 2026
Q3 2026
1 October 2026 to 20 October 2026
Q4 2026
1 January 2027 to 30 January 2027
30 January 2027 falls on a Saturday, so the deadline moves to the next working day. Check the AEAT calendar.
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Who can help
Gestors and Accountants who work in English can file these for you.
This page is general information, not legal advice.