How to become self-employed (autónomo) in Spain: registration, contribution (cuota) and first obligations

What self-employed status is and the two registrations

Self-employed status means you work for yourself and pay your own contributions and taxes. It needs TWO registrations.

Sort out my self-employment case

Tax registration (alta censal) at Hacienda (modelo 036): you choose your activity (epígrafe IAE) and tax regime (IVA, IRPF).

Registration in RETA at the Seguridad Social brings the duty to pay the monthly contribution (cuota).

Monthly contribution (cuota): the first year usually a reduced flat rate (tarifa plana, 80 €/month, the amount that carries over until the state budget law sets a different one), then by real income (income brackets, RD-Ley 13/2022 reform).

Who can become self-employed (EU and non-EU)

• EU/EEA citizens (incl. Romanians, Bulgarians, etc.): freedom of establishment — you only need a NIE (via the certificado de registro de ciudadano de la UE). No work permit needed.
• Non-EU citizens: you need a status that allows self-employment (residencia por cuenta propia, or a permit that allows cuenta propia). Without the right to work you cannot register.
• Students on non-EU estancia por estudios: cuenta propia depends on the study type and compatibility; for some programmes it applies automatically, while other cases need a separate authorisation and usually face a 30-hour limit.
• Minors and incapacitated persons are subject to specific rules.

What you are entitled to

• The right to register as self-employed and invoice (facturas) legally, if your status allows work/establishment.
• The right to the tarifa plana (80 €/month for ~12 months, plus the MEI on top) if you meet the new-registration conditions.
• The right to choose your tax regime (IVA/IRPF) and activity (epígrafe IAE) and change them via modelo 036.
• IRPF regimes: estimación directa simplificada is the usual route for a new autónomo (tax on your real income less expenses); estimación directa normal applies above the turnover threshold, and also if you opt out of the simplified modality or are excluded from it; estimación objetiva (módulos) is open only to a closed list of activities and taxes you on fixed indicators rather than actual results.
• Since 2023 contributions follow real income: you declare what you expect to earn, that puts you in a tramo, and you can change your base several times a year — after the year ends the TGSS compares what you declared with what you actually earned and charges or refunds the difference.
• The right to bonificaciones and to deduct expenses linked to the activity.
• The right to baja (deregister) and, on conditions, to cese de actividad (the self-employed benefit).

Deadlines that matter

• You must register BEFORE starting (alta censal beforehand; alta RETA on the day you start or earlier).
• The tarifa plana lasts a limited period (usually 12 months, extendable on low income).
• Taxes are quarterly: IVA (modelo 303) and IRPF (modelo 130/131), usually by the 20th after each quarter; Q4 runs to 30 January.
• The RETA cuota is charged monthly; a missed payment quickly becomes a recargo and a debt.

What to prepare

• A NIE and a certificado digital (or Cl@ve) to file online.
• A Spanish bank account (IBAN) for the cuota and taxes.
• A description of your activity → the right epígrafe IAE.
• EU citizens: the certificado de registro de ciudadano de la UE; non-EU: proof of the right to cuenta propia.

How to register, step by step

• Get a NIE and a certificado digital/Cl@ve (EU citizens via the certificado de registro UE).
• File the alta censal at Hacienda (modelo 036): epígrafe IAE, IVA/IRPF regime.
• File the alta in RETA at the Seguridad Social (usually via Import@ss) — on the day you start or earlier.
• Choose how your cuota is worked out — the tarifa plana or a contribution base set from your income — and link your IBAN.
• Set up facturas and the quarterly-return calendar (303, 130/131) — or use a gestor, but check they actually filed.

Real cases: what the mistake cost

Common mistakes

• Starting the activity and invoicing BEFORE the alta — a breach and a penalty risk.
• Doing the alta censal but forgetting the RETA alta (or the other way round).
• Choosing the wrong epígrafe IAE or tax regime.
• Missing the quarterly returns (303/130) → recargos and interest.
• Not paying the RETA cuota → recargo, debt and eventually an embargo.

Debt, recargos and how to react

• A late RETA cuota carries a recargo; accumulated Seguridad Social debt can lead to an embargo of your account.
• A Hacienda debt/penalty: check the notification, the deadlines and whether aplazamiento/fraccionamiento is possible.
• Sometimes there are grounds to challenge a charge or recargo — check the procedure and the deadline.
• Gather your alta proof, statements and notifications: documents in order and a clear timeline are what make your case.

Related guides

Common questions

Official sources