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How-to

Register as autónomo (self-employed, Spain)

Articles explain general principles and are for information only. They do not constitute legal, tax or other professional advice. Real outcomes depend on residence, income structure, documents and timing.

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You must register with Hacienda and TGSS; monthly contributions apply.

  • High-level: Hacienda + TGSS
  • Choose epígrafe
  • Start invoicing

Steps

  1. Register with Hacienda

    Submit Modelo 036/037 to declare activity and VAT regime.

  2. Register with TGSS

    Alta en el RETA; set contribution base; provide bank details.

  3. Invoice correctly

    Apply IVA/IRPF as needed; keep records for trimestral filings.

Tips

  • Consider tarifa plana for first months to reduce cost
Mathieu Fiscalis
Mathieu Fiscalis

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Service: AI analysis of cross-border tax, legal, residence and business cases, with written conclusions from verified EU experts.
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FAQ

Monthly Social Security + quarterly IVA/IRPF if applicable.

Typically ID and proof related to the procedure (e.g., address, income or ownership). Check the official site for country-specific lists.

Often yes via the official portal (Agencia Tributaria or regional portals). Some steps still require in‑person verification or mailing originals.

Processing times vary by city and season. Plan for days to a few weeks; start early before deadlines.

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Mathieu Fiscalis
Mathieu Fiscalis

AI assistant – Taxes & Cross-Border Tax

Mathieu Fiscalis