Business in Spain · updated 12.07.2026

How to become autónomo in Spain: registration, contributions and taxes

Updated: 12 July 2026 · Verified by the EuroGarant team against official sources

In short: autónomo (self-employed) is the Spanish equivalent of a sole proprietor: an individual who does business in their own name. To work for yourself legally, you need two registrations: alta en Hacienda (registration with the Spanish tax authority using form Modelo 036) and alta en Seguridad Social (enrolment in RETA, the register of the self-employed within the social security system). After that you pay a monthly social security contribution — the cuota, calculated from your actual income, and file quarterly returns for income tax IRPF and VAT IVA. Below is the whole path step by step: documents, forms, deadlines and typical mistakes. We will also look separately at which residence permit types allow you to register as autónomo at all.

Who can become autónomo: legal status comes first

Citizens of non-EU countries need a status that permits por cuenta propia (self-employed, in your own name) activity to work for themselves in Spain. Residency comes first here: without a suitable residence permit, autónomo registration is impossible. The main legal scenarios:

The right to work as an employee (for example, after family reunification, or under a standard work-based residence permit with por cuenta propia authorisation) also opens the door to autónomo. Under the NLV, however, you cannot run a business — if you plan to earn money in Spain, you need to choose a different permit type: a step-by-step review of all the options is in our guide “How to Get a Residence Permit in Spain”.

Step 1. Alta en Hacienda: Modelo 036 and your activity code

The first registration is with the tax authority (Agencia Tributaria, commonly called Hacienda). You file a declaración censal using form Modelo 036: since February 2025 the simplified form Modelo 037 has been discontinued, leaving a single Modelo 036 with a shortened filing option. In the form you specify:

• Epígrafe IAE — your activity code from the classification for the tax on economic activities (most autónomos do not pay the IAE tax itself, but the code is mandatory)
• Tax regimes — how you will calculate IRPF (usually estimación directa, the direct assessment method) and whether your activity is subject to IVA
• Business address and the actual start date

Modelo 036 can be filed online — for that you need an NIE (foreigner identification number) and an electronic signature: a certificado digital or a Cl@ve account. Getting a digital certificate should be your first priority — you will need it both for quarterly returns and for dealing with Seguridad Social (the social security administration).

Step 2. Alta en Seguridad Social: the RETA register

The second registration is with the social security system, under the special regime for the self-employed, RETA (Régimen Especial de Trabajadores Autónomos). Applications go through the online portal Import@ss. Key timing rules:

• You can file your alta in RETA in advance — up to 60 days before starting your activity
• The deadline is no later than the actual start date: filing late can mean back-charged contributions without any discounts, plus a fine
• The start date in RETA must match the date in Modelo 036 — a mismatch raises questions during inspections

From the moment of your alta you are insured: you get access to public healthcare, sick pay and cessation-of-activity benefits, and you accrue pension rights.

Cuota: how much you pay to Seguridad Social

Since 2023 the autónomo contribution has been tied to actual income (Real Decreto-ley 13/2022): you forecast your average monthly net income (rendimientos netos), fall into one of 15 brackets and pay the corresponding cuota. In 2025 the range was roughly from €200/month in the lowest bracket (income up to €670/month) to €590/month in the top one (over €6,000/month); the model is the same in 2026 — check the exact amount for your bracket in Import@ss. You can adjust the forecast during the year, and at year end Seguridad Social reconciles contributions against your actual income and recalculates — either an additional charge or a refund.

IRPF: the autónomo income tax

An autónomo's profit (income minus documented expenses) is taxed under the progressive IRPF — on the general scale, roughly from 19% to 47% depending on the amount and the region. During the year the mechanics work like this:

• Modelo 130 — a quarterly advance payment: 20% of accumulated net profit (minus advances already paid). Not required if ≥70% of a professional's revenue has already gone through withholdings (retenciones)
• Retención on invoices — professionals working with Spanish companies apply a 15% withholding (new autónomos — 7% in the year of registration and the two following years)
• Modelo 100 — the annual return (declaración de la renta), filed from April to June of the following year: the final calculation with advances and withholdings credited

If you spend more than 183 days a year in Spain, you are a tax resident and declare your worldwide income. How residency, deductions and the Beckham regime work is covered in our guide “Taxes in Spain”.

IVA: Spanish VAT and quarterly reporting

Most services and goods are subject to IVA at the rate of 21% (reduced rates — 10% and 4%). An autónomo adds the tax to invoices and pays the difference between IVA collected and IVA paid to the treasury every quarter using Modelo 303; the year's totals are summarised in the informational form Modelo 390. Details that are often forgotten:

• Some types of activity are exempt from IVA (for example, educational and medical services) — this is declared as early as Modelo 036
• To work with clients in other EU countries you need to register in the ROI register (obtaining a NIF-IVA number) — services to EU businesses are invoiced without Spanish IVA under the reverse-charge mechanism
• Services to clients outside the EU are in most cases not subject to Spanish IVA, but the obligation to issue correct invoices remains
• From 2026, requirements for certified invoicing software are being phased in (a system called VeriFactu) — check compatibility when choosing your invoicing software

The autónomo calendar: forms and deadlines

Autónomo registration: 6 steps

1. Check your status. Make sure your residence permit allows por cuenta propia work: the DNV (for freelancers with foreign clients), the entrepreneur visa and work-based permits qualify; the NLV does not.
2. Get an NIE and a certificado digital. Without an electronic signature, filing forms and returns online is impossible.
3. File Modelo 036 with Hacienda. Choose your epígrafe IAE, your IRPF/IVA tax regimes and the start date; if you will work with EU clients, request ROI registration right away.
4. Complete your alta in RETA via Import@ss. Match the date with Modelo 036, state your income forecast for the cuota bracket, and check your eligibility for the tarifa plana.
5. Set up bookkeeping and invoicing. Start an income and expense ledger, an invoice template with retención (where applicable) and software compatible with VeriFactu.
6. Pay and file on time. The monthly cuota, quarterly Modelo 130 and 303, annual Modelo 390 and 100 — set up a tax calendar from day one.

Common mistakes when registering as autónomo

• Issuing invoices before your alta en Hacienda and RETA — back-charged contributions and loss of eligibility for discounts
• Registering as autónomo on a status that does not grant work rights (such as the NLV) — a risk to your future residence permit renewal
• Understating your income forecast to get a smaller cuota — the annual recalculation will charge the difference anyway
• Forgetting about ROI when working with EU clients — invoices without a NIF-IVA are issued incorrectly
• Missing the quarterly Modelo 130/303 deadlines — late-payment interest and surcharges are applied automatically
• For DNV holders — exceeding the Spanish client share (more than 20% of income): this is a condition of the status itself

More breakdowns of specific situations can be found in the “Questions and Answers” section and in other articles in the “Business in Spain” category.

Disclaimer: tax rates, cuota brackets and reporting forms in Spain are revised regularly, and practice varies by region. This material is for reference only and does not replace advice: before your alta, it is worth checking the requirements for your specific situation — both immigration and tax.

Read also

• Business taxes in Spain
• How to open an S.L. company in Spain
• Remote work and life in Spain on the DNV

Official sources: Real Decreto-ley 13/2022 — income-based contributions (BOE) · Agencia Tributaria — Modelo 036, IRPF, IVA · Seguridad Social / Import@ss — RETA · Ley 14/2013 (BOE)