Calculators for the Self-Employed
Your contributions, instalments and the quarterly returns you have to file.
Spanish Self-Employed Contribution Calculator
Work out what a self-employed worker in Spain pays Social Security each month in 2026: the income bracket that applies, the contribution base you may choose inside it, and the monthly cuota split into the five items that make it up.
Open calculator →Company-owner autónomo
Check whether Spanish Social Security treats you as a company-owner autónomo, and what it costs.
Open calculator →Family collaborator
Check whether you are a family collaborator, and what it costs.
Open calculator →Spanish Quarterly VAT Return (Modelo 303) Calculator
Work out the VAT you owe or carry forward this quarter from the invoices you issued and received, with the result broken down box by box and the two deadlines that are not the same date: filing and direct debit.
Open calculator →Spanish Quarterly Income-Tax Instalment (Modelo 130) Calculator
Work out this quarter’s Spanish income-tax instalment from your year-to-date income and expenses, with the result broken down box by box, a check on whether you are exempt from filing at all, and the two deadlines that are not the same date.
Open calculator →Spanish form 131 checker
Tells you whether you can stay on the Spanish módulos regime under the limits that actually apply this year, what each quarterly instalment comes to, and the day it falls due. The limits dropped in 2025 and almost no published guide has caught up.
Open calculator →Spanish Withholding Tax Return (Modelo 111) Calculator
Work out your Spanish modelo 111 with the withholding rate for each key, the result box by box, and the two deadlines that do not match the modelo 303’s.
Open calculator →Spanish form 190 calculator
Settle whether you have to file the annual withholding summary, under which code, why it does not reconcile with your four form 111s and when it really falls due.
Open calculator →Spanish form 390 calculator
Check whether you have to file Spanish form 390, whether your annual summary reconciles with the year’s four form 303 filings, and what volume of operations you will report next year.
Open calculator →Spanish form 347 calculator
Check whether you have to file Spanish form 347, which customers and suppliers go in it, under which key and in which quarter, and when it is actually due this year.
Open calculator →Spanish form 349 calculator
Check whether you file Spain’s form 349 monthly or quarterly, what date it really falls due, and how much VAT is at stake if an intra-EU supply is left out of the statement.
Open calculator →Spanish form 184 calculator
Whether your Spanish comunidad de bienes has to file it, the date it really falls due, how much is attributed to each member and what a mistake costs.
Open calculator →Spanish business activity tax
Whether an activity is liable to the Spanish business activity tax, what the bill comes to and from which year it is paid.
Open calculator →Spanish Verifactu checker
Tells you whether Spain’s invoicing-software regulation covers you, from what date and by which route, and what the penalty regime actually says. The deadlines are in 2027: a December 2025 decree moved them, and most published guidance still says 2026.
Open calculator →Spanish equivalence surcharge
What an invoice with the surcharge holds, and whether it pays.
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About the calculators for the self-employed
Being self-employed in Spain means paying by net-earnings bracket and filing the same returns every quarter, plus the annual summaries that have to reconcile with them. These calculators estimate the contribution you owe and the boxes of each form from your income and costs. The actual filing happens on the tax office site.
Learn
- The contribution base for autónomos →
- What a company-owner autónomo is →
- What a family collaborator is →
- What form 303 is →
- What form 130 is →
- Spain’s módulos regime →
- What form 111 is →
- The income codes on form 190 →
- What form 390 is →
- What form 347 is →
- Intra-EU VAT in Spain →
- The Spanish comunidad de bienes →
- The Spanish IAE activity code →
- What Verifactu is →
- The Spanish VAT equivalence surcharge →
The calculators provide educational estimates and do not constitute tax advice.