Taxes & Deductions: A Deep Dive for Gig Workers in Spain

Spain's tax system for self-employed gig workers (autónomos) is administered by the AEAT (Agencia Estatal de Administración Tributaria). The 2023 income-based RETA reform changed contribution structures. Understanding IRPF income tax, RETA contributions, IVA, and available deductions enables Spanish gig workers to optimize their tax position.

1. IRPF — Progressive Income Tax

Progressive rates from 19% to 47% on net income

Spanish IRPF rates: 19% up to EUR 12,450; 24% up to EUR 20,200; 30% up to EUR 35,200; 37% up to EUR 60,000; 45% up to EUR 300,000; and 47% above EUR 300,000. Autonomous community surcharges adjust the actual rates (varying by region). Self-employed net income is revenue minus deductible expenses minus RETA contributions. Quarterly advance tax payments (pagos fraccionados — Model 130) at 20% of cumulative net income are required. The annual return (Declaración de la Renta) is filed April-June.

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AEAT — Tax Agency: https://www.agenciatributaria.es/

2. RETA — Income-Based Social Security (2023 Reform)

Contributions now based on real income — 15 brackets

Since 2023, autónomo RETA contributions are based on real net income rather than a self-declared base. 15 income brackets with monthly contributions ranging from approximately EUR 230 (lowest income) to EUR 530+ (highest). Tarifa plana: new autónomos pay approximately EUR 80/month for the first 12 months (regardless of income bracket). RETA contributions are fully deductible from IRPF taxable income — a critical tax benefit. The reform means higher earners pay more but receive proportionally higher pension benefits.

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Seguridad Social — RETA: https://www.seg-social.es/

3. IVA — Value Added Tax at 21%

Quarterly VAT declarations for most autónomos

Spain's standard IVA rate is 21% (10% for food, transport, some services; 4% for basic necessities). Most autónomos must charge IVA on invoices and file quarterly returns (Model 303). Certain professional services are IVA-exempt (healthcare, education, insurance). The recargo de equivalencia regime applies to retail traders. Quarterly IVA returns reconcile output IVA (charged to clients) with input IVA (paid on purchases). Annual IVA summary (Model 390) is filed in January.

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AEAT — IVA: https://www.agenciatributaria.es/

4. Deductible Business Expenses (Gastos Deducibles)

Reducing IRPF taxable income through documented expenses

Deductible expenses: RETA contributions (fully deductible); office rent or home office deduction (30% of expenses proportioned to dedicated business space); equipment amortization (computers at 25%/year, vehicles at 16%); software and subscriptions; internet and phone (50% of phone, 100% if business-only line); professional development; vehicle expenses (limited — only deductible if exclusively used for business, except for certain professions like transportation); marketing; professional fees (gestoría/asesoría); insurance; and supplies. The vehicle expense limitation is strict in Spain — mixed-use vehicles have very limited deductibility.

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AEAT — Deductions: https://www.agenciatributaria.es/

5. IRPF Retenciones — Withholding on Professional Invoices

15% withholding on invoices to Spanish companies

When autónomos issue invoices to Spanish companies for professional services, a 15% IRPF retention (retención) is withheld. New autónomos in their first 3 years can apply a reduced 7% retention rate. The withheld amount is credited against the annual IRPF liability. If total retenciones exceed the final tax, a refund is received. For gig workers with high retenciones and low actual tax (due to deductions), substantial refunds are common. Model 130 quarterly payments account for income without retención (e.g., from individual clients or international sources).

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AEAT — Retenciones: https://www.agenciatributaria.es/

6. Plan de Pensiones Deduction

Tax-deductible pension contributions up to EUR 1,500/year

Individual pension plan contributions are deductible up to EUR 1,500/year. At a 30% marginal rate, EUR 1,500 saves EUR 450. Employment pension plans have higher limits. The reduced individual limit (from previous EUR 8,000) has decreased the impact but still provides tax savings. Autónomos should contribute the maximum EUR 1,500 annually for the tax deduction.

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DGSFP — Pension Plans: https://www.dgsfp.mineco.es/

7. Personal and Family Deductions

IRPF personal minimum and family allowances

IRPF provides personal and family minimums exempt from tax: personal minimum EUR 5,550 (EUR 6,700 for those over 65); per-child allowance EUR 2,400-4,500 depending on birth order; ascendant allowance EUR 1,150-2,550; and disability allowances. These minimums reduce the taxable base. Additionally, deductions for housing mortgage (pre-2013 purchases), charitable donations, and political party contributions apply. Autonomous community-specific deductions vary by region.

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AEAT — Personal Deductions: https://www.agenciatributaria.es/

8. Modelo 303 and Modelo 130

Quarterly VAT and income tax filings

Two key quarterly filings: Model 303 (IVA/VAT return) — filed by the 20th of April, July, October, and January 30; Model 130 (IRPF advance payment) — 20% of cumulative net income minus retenciones, filed same dates. Additionally, Model 347 (annual declaration of third-party transactions above EUR 3,005.06) is filed in February. Model 349 declares intra-EU transactions. The AEAT's Sede Electrónica portal handles all electronic filings.

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AEAT — Sede Electrónica: https://www.agenciatributaria.es/

9. Tarifa Plana Benefit

Reduced RETA contributions for new autónomos

New autónomos benefit from tarifa plana: approximately EUR 80/month for the first 12 months. After the initial period, contributions increase based on the income bracket. The tarifa plana savings (approximately EUR 150-450/month vs. regular RETA) can be directed to pension plans, business investment, or emergency reserves. Since RETA is tax-deductible, lower RETA during tarifa plana also means a smaller IRPF deduction — a partial offset to the savings.

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Seguridad Social: https://www.seg-social.es/

10. Compliance Tips

Practical guidance for Spanish gig workers

Tips: register as autónomo before starting work (retroactive penalties apply); take advantage of tarifa plana for the first year; apply the 7% reduced retención rate in first 3 years; file Model 303 and 130 quarterly on time; maximize RETA deduction from IRPF; contribute EUR 1,500/year to pension plan; use the 30% home office deduction; engage a gestoría/asesoría fiscal (EUR 50-150/month — deductible); and use electronic filing through Sede Electrónica. Common mistakes: not registering before starting work; missing quarterly filing deadlines (surcharges apply); not applying the 7% reduced retención; and not claiming all deductible expenses (particularly RETA contributions and home office).

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AEAT: https://www.agenciatributaria.es/

Disclaimer: This guide is for informational purposes only. Tax laws change frequently. Consult a licensed tax professional in Spain for personalized advice. Links verified as of April 2026.