Deregistering as autónomo means filing two separate baja documents: one with Hacienda (the AEAT censal baja) and one with Social Security (baja en RETA). Skip either and the bills keep coming. This guide walks you through both filings step by step, the fastest single-form alternative (CIRCE), the pro-rata rule that decides what you pay for the partial month, and the final tax returns you still owe after you've stopped trading.
For: residents in mainland Spain or the Balearics, sole traders without employees. Allow 30 to 60 minutes if you have your digital certificate ready.
The TL;DR in five lines:
Have these ready before opening any form:
If you have employees, multiple premises, are under recargo de equivalencia, or run multiple activities, you can't use the simplified online flow. Book a slot at an AEAT or TGSS office.
Two government bodies need to be notified:
The two are not linked automatically. Filing one does not file the other. The cessation date you put on each must match exactly, otherwise one body keeps billing or expecting returns until you fix the discrepancy.
Go to the AEAT Sede Electrónica and search for "Modelo 037" (simplified) or "Modelo 036" (full version).
Use Modelo 036 if any of these apply: you charge VAT under recargo de equivalencia, you operate from more than one premises, you have multiple activities under different IAE epigrafes, or you're a non-resident. Otherwise Modelo 037 is fine.
In the form:
You'll see an immediate acknowledgement and a downloadable PDF "justificante." Keep it. Status moves to "tramitada" within a few minutes for most cases. Track it under "Mis Expedientes" on the AEAT portal.
Once the AEAT acknowledgement is in hand, head to Importass (the Seguridad Social citizen portal at portal.seg-social.gob.es/importass) and look for "Solicitud de baja en RETA."
Required:
Submit. The system issues a "resolución de baja" PDF, usually instantly. From the cessation date forward, no more cuotas are generated.
If you had employees, the baja must be done in person at a TGSS office, and you must first formalise the baja of every employee in the General Regime.
If you're a sole trader without employees, the Documento Único Electrónico (DUE) through the CIRCE system at the Punto de Atención al Emprendedor (PAE) submits the baja to both AEAT and Seguridad Social in one go.
What you'll need:
Trade-off: it's the fastest path, but if anything bounces back (wrong reason code, missing data), you sometimes have to repeat steps individually. For complex situations, file the two separately.
Social Security charges only for the days you were registered in the month, but only for the first three deregistrations in a calendar year. The fourth and any further baja in the same year revert to full-month billing regardless of the cessation date.
What that means in practice:
This is why teachers, project consultants, and seasonal autónomos use the rule deliberately, deregistering during dry months and re-registering when work picks up. Just keep count of the slots used.
Closing the censal record does not erase your obligations for the period you were active. Whatever quarter you stopped in still requires its returns:
The following year, you also file:
Skipping these is the most common reason ex-autónomos get a sanction notice 12 to 18 months after they thought they were done. Keep filing through the natural calendar even after the baja.
Once both filings are processed:
Don't deactivate your digital certificate. AEAT and Seguridad Social may need to reach you for the final liquidation.
If you'd rather not handle the filings yourself, renn handles end-to-end deregistration including the final quarterly and annual returns.
Can I deregister temporarily?
Yes. Many autónomos deregister during slow seasons and re-register when work picks up. The 3-times-per-year pro-rata rule was designed for this. From the fourth baja in the same year, you pay full-month billing regardless of the date.
Do I have to deregister if I just have no income for a month?
No. You can stay registered with zero invoicing, but you keep paying the monthly cuota. Deregistering and re-registering is only worth it if the dry stretch lasts more than a couple of weeks.
Does deregistering wipe out my tax debt?
No. Any pending IRPF, VAT, or Social Security debt survives the baja and is still collectable.
What if I have unpaid invoices when I deregister?
You can still collect them. Issue them before the cessation date and declare them in the final Modelo 303 / Modelo 130. Income received after the baja from a pre-baja invoice is still taxable in the active period.
Will I lose my tarifa plana if I re-register?
Possibly. The tarifa plana cannot be claimed twice within 2 years for the same person. If you've used it before and re-register too soon, you go straight to the full cuota.
What happens to my Verifactu obligations?
They pause from the cessation date. If you re-register after 1 July 2027, Verifactu is mandatory from that date. See the Verifactu guide for details.
renn handles autónomo deregistration end to end: the AEAT censal baja, the RETA baja, the final quarterly returns, and the next-year annual returns so nothing is left open. If you're closing your activity or pausing it, book a tax chat and we'll file everything for you.
