Key Takeaways
- Autónomo social security costs €230–€530/month in 2026. The new cuota system bases contributions on your actual net income rather than a flat fee.
- New autónomos get a flat rate of €80/month for the first 12 months. Extendable to 24 months if net income stays below the minimum wage.
- Quarterly tax filings are mandatory: Modelo 130 (income) and Modelo 303 (IVA). Deadlines are January 20, April 20, July 20, and October 20. Late = automatic penalty.
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Key Takeaways
- Autónomo means full personal liability — You and your business are legally the same entity. Business debts become personal debts, unlike an SL (limited company) structure.
- Monthly social security is mandatory — Autónomos must pay into social security monthly (~€230-€500+ depending on your chosen base). This grants access to public healthcare and eventual pension.
- Quaterly tax payments required — You must file and pay Modelo 130 (estimated income tax) quarterly. Annual declarations reconcile these payments.
- Flat rate available for new autónomos — First-time autónomos can access a reduced social security rate (~€80/month) for the first 12 months, with gradual increases over 3 years.
- Registration is straightforward but binding — Register at Hacienda (tax office) and Seguridad Social. Once registered, you have monthly obligations even with zero income.
- a monthly social security payment,
- a quarterly tax rhythm,
- and an admin dependency (your gestoría).
This guide is the practical playbook.
Pillar context: Business in Spain: Complete Guide (2026)
See also: Autónomo vs SL: which structure? | Business costs and fees
This guide covers the cost side of going self-employed. The benefits side, from the tarifa plana and the health-insurance deduction to the notification pause Hacienda lets you switch on, is in The Autónomo Benefit Stack.
What autónomo means (in plain English)
Autónomo = self-employed individual.
You invoice clients under your own tax ID (your NIE used as NIF). Your profits are taxed as personal income (IRPF). You typically file quarterly.
The real cost: social security + taxes + admin
Social security (RETA)
- New autónomos often start with tarifa plana at ~€80/month.
- After the discount, contributions typically rise to ~€230–€530/month depending on declared net income.
The psychological mistake: building your pricing around €80.
Gestoría
Expect €50–€150/month depending on complexity and quality.
Quarterly taxes
You’ll commonly deal with:
- Modelo 130 (income tax advance)
- Modelo 303 (IVA/VAT)
Your exact set depends on your activity and clients.
The quarterly rhythm (the part that changes how you live)
Deadlines are usually the 20th of:
- January, April, July, October
Second-order effect: you become a cash-flow manager.
Recommended habit:
- open a separate “tax buffer” account
- move 30–40% of income there on receipt
IVA basics (don’t guess)
IVA depends on:
- B2B vs B2C
- Spain vs EU vs non-EU
Many international B2B services are reverse-charge (no IVA charged), but you still file.
Ask your gestoría for a one-page decision tree for your case.
Setup overview (high-level)
Typical steps:
- Confirm NIE/NIF and address basics.
- Register activity/tax status (Modelo 036/037).
- Register with RETA.
- Set invoicing and recordkeeping standards.
- Plan your quarterly calendar.
If you also need Spanish banking, read: Banking in Spain pillar
Common mistakes
- Treating tarifa plana as permanent pricing
- Not keeping copies of filings and payment confirmations
- Missing that “no IVA charged” does not mean “no IVA paperwork”
- Using a gestoría that files but never advises
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Last reviewed: January 2026.
Frequently Asked Questions
What is autónomo in Spain?
Autónomo is Spanish self-employment status. As an autónomo, you are a sole trader with no legal separation between you and your business. You can invoice clients, deduct business expenses, and must pay monthly social security and quarterly taxes.
How much does it cost to be autónomo?
Monthly social security contributions range from ~€230 to €500+ depending on your chosen contribution base. New autónomos qualify for a reduced flat rate (~€80/month) for the first 12 months. Plus you pay income tax on profits.
Do I need to register as autónomo immediately?
Technically, you should register before starting any economic activity. In practice, many register within the first month of working. Delaying too long risks fines and back-payment demands from Hacienda.
What taxes do autónomos pay?
Quarterly Modelo 130 (estimated income tax at 20%), annual income tax return (Modelo 100), and VAT (Modelo 303/390) if your activity is subject to IVA. Many also pay local business tax (IAE).
Can I be autónomo and employed?
Yes, you can combine autónomo status with employment. However, you pay social security on both, though there are caps on total contribution bases. Ensure your employer knows if you have other income sources.
Related Guides
- Autónomo vs SL in Spain: which saves you more money? (2026)
- Business costs & fees in Spain: what it really costs to operate (2026)
- Business in Spain: complete guide for expats (2026)
- Spain tax deadlines calendar (2026): the dates that actually matter
- VeriFactu Spain: what self-employed expats need to know for 2027
Related Guides
- Autonomo Spain Guide
- Autonomo vs SL
- Business Structure in Spain
- How to Find a Good Gestor
- Income Tax in Spain
- The Autónomo Benefit Stack: What Spain Quietly Gives Back
Frequently Asked Questions
How much does it cost to be autonomo in Spain?
Monthly social security starts at approximately EUR 230 under the 2026 income-based quota system. Add quarterly tax filing costs (EUR 50-100 if using a gestor) and you are looking at EUR 300-400 per month minimum in fixed costs before you earn anything.
Can I be autonomo with foreign clients only?
Yes. Many expats on the Costa del Sol work as autonomos serving clients outside Spain. You still pay Spanish social security and taxes, but may benefit from reduced VAT obligations on services exported outside the EU.
What is the tarifa plana for new autonomos?
New self-employed workers can pay a reduced social security rate of EUR 80 per month for the first 12 months, extendable to 24 months if income remains below the minimum wage. This significantly reduces startup costs.
Do I need a gestor to be autonomo?
Technically no, but practically yes. Quarterly tax filings (Modelo 130, 303) and annual declarations require specific knowledge. A gestor costs EUR 60-120 per month for ongoing autonomo management. The cost of getting it wrong (penalties, interest) far exceeds the gestor fee.
What is the difference between autonomo and SL?
Autonomo is simpler (no minimum capital, easier setup) but you have unlimited personal liability. An SL (Sociedad Limitada) requires EUR 3,000 minimum capital and more administration but limits your liability to the company assets. Most solo operators start as autonomo and incorporate later if needed.
Beyond your quarterly returns, autonomos must file informative tax declarations such as the Modelo 347. No tax is due, but penalties apply if you miss them.
