Everything you need to register as self-employed in Spain — Social Security tiers, the flat-rate cuota, Hacienda filings, and the mistakes that cost foreign autónomos their first-year savings.
Registering as autónomo is, on paper, the simplest way to work legally in Spain. Two forms, same-day registration, and you're live. The catch is what those two forms actually commit you to — a tiered Social Security system, quarterly tax filings, an annual income tax return and a set of record-keeping obligations that catch out almost every foreign freelancer in the first year.
This page is written for people who are already self-employed somewhere else — UK sole traders, US independent contractors, Irish freelancers, Canadian and Australian consultants, digital nomads moving onto a DNV — and now need to formalise that activity in Spain. It walks through the full registration, the real cost in year one, and how the new income-based cuota system changes the calculation from what you might have read online a few years ago.
Autónomo registration is something we handle weekly for expat clients. Most people can be fully registered, compliant and invoicing within a week of the first call.
Written scope, fixed fee, no hourly surprises. Your registration includes Modelo 036, Social Security affiliation, epígrafe IAE selection, IVA regime confirmation, and an invoice-template starter pack.
Autónomo isn't a legal entity — it's a tax and Social Security status assigned to you personally. You, the human, are the business. That changes a lot of things people coming from a corporate structure abroad don't expect.
There is no legal separation between your personal assets and your business. Debts, client claims, tax arrears — all fall on you directly. That's fine for most freelance consulting work, but it becomes a problem the moment you're holding significant inventory, handling client funds, or signing contracts with liability exposure.
If liability starts to become a real issue, that's the signal to move from autónomo to an SL. We run that conversion regularly — it's a tax-neutral restructure if done properly.
Every autónomo registers twice on day one — with Hacienda (Modelo 036 or 037) and with Social Security (alta en el RETA). These are different agencies with different deadlines, different penalties and different portals.
The Modelo 036 is where you declare your activity, your IVA regime and your IRPF withholding position. The Social Security registration is where you declare your income estimate and confirm your cuota tier. Neither system pulls data from the other — you have to file correctly with both.
The Impuesto de Actividades Económicas code — the epígrafe — is the three or four-digit number that defines your activity for tax purposes. It determines whether you charge IVA, whether clients must retain IRPF on your invoices, and which Modelos you're required to file.
A 'consulting' epígrafe is taxed differently to 'professional services' which is different again from 'commercial activities'. Picking the wrong one can mean years of filing the wrong forms. We confirm the right code against your actual activity, not a generic default.
Every autónomo files quarterly — Modelo 303 (IVA), Modelo 130 or 131 (IRPF advance payments if applicable), and Modelo 349 if you have intra-EU clients. Then annually: Modelo 390 (IVA summary) and Modelo 100 (income tax return).
Miss one and the penalty is automatic — a sliding-scale surcharge that starts at 1% per month of delay and climbs. The compliance calendar is something we set up for you at registration so the first filing isn't a surprise.
A proper autónomo registration is more than Modelo 036. It's the setup that means month one, quarter one and year one all run without friction.
The tax census declaration — where you formally declare your activity, IVA regime, epígrafe code, and whether you're on simplified or modular tax regimes.
Registration with the Régimen Especial de Trabajadores Autónomos — selecting your contribution tier under the new income-based cuota system.
A dedicated business account to separate personal and professional income. We coordinate openings with banks that welcome non-resident freelancers.
The digital signature you need to file online with Hacienda, Social Security and most regional administrations. Essential for any autónomo who plans to handle their own filings.
Compliant Spanish invoice templates — correct IVA handling, IRPF retention where required, and NIF/CIF formatting. A wrong invoice is a rejected expense.
If you bill EU B2B clients, you need an intra-EU VAT number (ROI / VIES). Without it, you have to charge Spanish IVA on invoices that should be zero-rated.
Your first-year filing calendar — Modelos 303, 130, 349, 390 and 100 with the correct dates marked. No surprises, no late filings.
For most autónomos, month-to-month bookkeeping sits better with a gestor than with a solicitor. We introduce you to gestores who work with expats — in English, at fair fixed fees.
This is the calendar for a straightforward expat autónomo registration. Most delays in this process come from clients not having an NIE or a bank account — not from the registration itself.
We confirm your residency status allows autónomo activity, review your revenue model and map your activity onto the right epígrafe IAE code. You leave the call with a clear plan.
NIE, passport, Spanish address proof (empadronamiento or rental contract), bank account ready. If any of these are missing, we sort them first — the registration needs all four.
We file the Modelo 036 electronically with Hacienda — activity declared, IVA regime set, epígrafe registered, start date chosen. Confirmation usually same-day.
Alta en el RETA filed the same or next day, with your income estimate and cuota tier selected. For qualifying new autónomos, we activate the flat-rate cuota (€80/month in year one).
Digital certificate issued, business bank account finalised, invoice templates configured. You're ready to raise your first compliant Spanish invoice.
Compliance calendar delivered, gestor introduction made if you want one, and a short written brief covering what you can expect in your first quarterly filing.
The cuota is the most-asked question about going autónomo — and the most out-of-date information online. Spain moved to an income-based contribution system from 2023, fully phased in through 2026. The old €294 flat monthly cuota no longer exists.
Under the new system, your monthly Social Security cuota is set by your declared net monthly income (gross minus deductible expenses). There are 15 tiers, and you choose the one that matches your projected income. The cuota adjusts — either up or down — when your actual income is confirmed in your annual tax return.
For genuine new autónomos, the tarifa plana (flat-rate) reduces the cuota to €80/month for the first 12 months, regardless of income. Some regions extend this for a second year if income stays below a threshold. We check eligibility at registration — missing this is one of the most expensive mistakes a new expat autónomo can make.
On top of the cuota, you pay IRPF (personal income tax) on your net business profit at progressive rates — 19% up to €12,450, climbing in brackets to 47% above €300,000 (with regional surcharges). For most expat freelancers earning €40–80k net, the effective IRPF rate sits in the high 20s to low 30s.
Then there's IVA. If you sell taxable services, you charge 21% IVA on invoices and remit the net (IVA collected minus IVA paid on business expenses) quarterly via Modelo 303. Some activities — medical, education, certain financial services — are IVA-exempt, which changes the whole filing picture.
These are the conversations we have every week with people moving from somewhere else into the Spanish autónomo system.
The situation. Been self-employed in the UK for six years. DNV granted. Needs to know whether her UK clients can keep paying her Ltd company or if everything has to go through a Spanish autónomo.
How we'd handle it. DNV requires Spanish economic activity registration. We register her autónomo, close the UK Ltd over the following quarter, and apply the UK/Spain double-tax treaty for the transition year so she isn't taxed twice on income earned across both systems.
The situation. Works remotely for a US company, has a TIE from family reunification. Technically self-employed because he invoices, but functionally an employee of one client.
How we'd handle it. Registered as autónomo with the correct epígrafe. We draft a proper independent-contractor agreement between him and the US company to pre-empt any falso autónomo challenge by Spanish labour inspectors — a real risk for single-client setups.
The situation. Both want to be autónomo for the same business — an e-commerce shop selling to EU customers. Not sure whether to register both or just one.
How we'd handle it. Registered one spouse as autónomo and the other as colaborador familiar (family collaborator) — a Social Security regime designed exactly for this. Cleaner tax treatment and lower combined cuota than two separate autónomos.
The situation. Wants to consult for expat property buyers on the Costa del Sol. Currently on a Non-Lucrative Visa.
How we'd handle it. NLV prohibits economic activity. We sequence a modification to residency with work authorisation first, then register the autónomo once the new residency card is issued. Skipping the sequence would have created a visa-compliance problem at renewal.
These are recoverable but expensive. All of them come from either bad initial advice or trying to DIY the registration without knowing the rules.
The €80 first-year cuota is available to new autónomos who haven't been registered in the last 24 months. Miss the application at registration and you default to the standard tier — then spend the rest of year one paying 3–4× what you should have.
Common for expats to pick a 'professional services' code when their activity is actually commercial — or vice versa. Each has different IVA and IRPF rules. Correcting it retrospectively is a formal process with potential surcharges.
Professional autónomos (doctors, lawyers, consultants, designers) must apply a 15% IRPF retention on B2B Spanish invoices. Clients pay 85% to the autónomo and 15% to Hacienda directly. Get this wrong and your year-end tax return is a nightmare.
Spanish invoices have legal content requirements — numbering, IVA breakdown, client NIF, activity description. Non-compliant invoices can be rejected by Hacienda as deductible expenses for your clients, who then come back to you to reissue.
A single personal account for both is a red flag in any audit. Hacienda expects separation. Use a dedicated business account from day one — some free options exist specifically for autónomos.
If you have EU B2B clients, you need an EU VAT number (ROI). Without it, you bill 21% Spanish IVA, the client refuses to pay IVA on a service they could have received zero-rated, and you spend months fixing it.
Most expats start as autónomo. The question is when to upgrade — usually to an SL — and when to stay. These are the markers we watch.
Autónomo registration is a technical process with legal and tax consequences you feel for years. A cheap shortcut at registration becomes an expensive correction at year three.
Our team handles autónomo registrations for expats week in, week out. You get bar-registered solicitors, legal specialists, and immigration specialists coordinating the whole setup — not a gestor alone trying to interpret your visa status.
We don't just register you as autónomo — we keep your Spanish fiscal life running month to month, so your modelos, returns and books are always up to date and filed on time.
A simple monthly fee, tailored to your activity.
Book a call with a bar-registered Spanish solicitor and a tax specialist. Fixed fee, flat-rate cuota activated where eligible, and a compliance calendar that keeps you clean for your whole first year.