Registering as an autónomo is how most people work for themselves in Spain, from freelancers and consultants to shop owners and tradespeople. But the Spanish system asks you to manage two things that feel like one: IRPF, the progressive income tax, and RETA, the special social-security regime for the self-employed. Since the 2023 reform, RETA is calculated on your real net earnings, which changed the maths for almost everyone.
This guide explains both systems for 2026, the income-based contribution brackets, the famous tarifa plana flat rate for new autónomos, how VAT (IVA) fits in, and a worked example. It draws on Agencia Tributaria and Seguridad Social guidance and is informational, not personal tax advice.
The two systems every autónomo pays
Keep these mentally separate; they go to different authorities on different schedules:
- IRPF (Impuesto sobre la Renta de las Personas Físicas): income tax on your net profit, paid via quarterly instalments (modelo 130) and reconciled in your annual declaration (Renta).
- RETA (Régimen Especial de Trabajadores Autónomos): monthly social-security contributions to the Seguridad Social, now based on your forecast net income.
Many new autónomos underestimate RETA because it is a fixed-feeling monthly bill rather than a percentage of each invoice. Budget for both from day one.
There is also a paperwork layer that catches newcomers. To register you file the tax census declaration (modelo 036 or the simplified 037) with the Agencia Tributaria to declare your activity, and separately enrol in RETA with the Seguridad Social, ideally on the same day. You choose your IAE activity code and confirm your VAT and IRPF obligations, and from that moment the quarterly filing clock starts. Getting the registration right avoids months of correcting a misclassified activity later.
IRPF: the 2026 income tax brackets
Spain's income tax is progressive and split between a state portion and a regional (autonomous community) portion, so the exact top rate varies by where you live. The combined national reference scale for 2026 is roughly:
| Taxable income | Combined marginal rate |
|---|---|
| Up to €12,450 | 19% |
| €12,450 – €20,200 | 24% |
| €20,200 – €35,200 | 30% |
| €35,200 – €60,000 | 37% |
| €60,000 – €300,000 | 45% |
| Above €300,000 | 47% |
These rates apply to your net profit, that is, income after deducting allowable business expenses, and after the personal minimum (mínimo personal) that shelters a first slice of income. Regions such as Madrid, Catalonia and Andalusia set their own half of the scale, so your real top rate can sit a couple of points either side of these figures.
RETA: social security based on real income
This is the biggest change of recent years. Autónomos no longer freely pick a contribution base; instead you declare your expected net income and fall into a bracket that sets your monthly contribution. The system was designed to raise contributions for higher earners and lower them for the smallest.
In broad terms, effective RETA contributions work out to around 31.4% of the chosen contribution base, covering pension, sickness, and now cessation-of-activity and training cover. Because low earners sit in low brackets, the monthly figure ranges from roughly €200 for the smallest incomes up to €600 or more for high earners, and the brackets are scheduled to keep shifting through the reform's transition to 2032. Always check the current year's contribution table with the Seguridad Social.
Two practical points:
- At year end, the Seguridad Social reconciles your provisional contributions against your actual net income. Underpaid brackets get topped up; overpaid ones are refunded, usually the following year.
- RETA contributions are themselves a deductible expense for IRPF, which softens their real cost.
You can change your chosen contribution base several times a year as your income forecast shifts, which is genuinely useful for freelancers with lumpy earnings. If you expect a strong year, moving up early avoids a large year-end top-up; if work dries up, moving down frees cash immediately. The reform was designed as a transition running toward 2032, with the bracket table revised periodically, so a figure that is correct today may change next year. Treat any specific euro amount as a snapshot and verify the live table before you commit.
Tarifa plana: the cheap first year
New autónomos, and those who have not been registered for the previous couple of years, generally qualify for the tarifa plana (flat rate): a reduced RETA contribution of about €80 per month for the first 12 months. It can be extended for a further 12 months if your net income stays below the annual minimum wage (SMI) threshold. This is a major reason Spain is friendly to first-time freelancers, so make sure you claim it at registration.
Some autonomous communities layer their own extra incentives on top, occasionally reducing or effectively zeroing the contribution for young people, women returning to work, or autónomos in rural or depopulated areas. These regional schemes change often and vary widely, so check what your comunidad autónoma offers before you assume the national tarifa plana is all you can claim. Getting this right in year one is the single biggest lever on your early cash flow.
VAT (IVA) for autónomos
Most autónomos must also charge IVA at the standard 21% (with reduced 10% and super-reduced 4% rates for specific goods and services). You collect it from clients and remit it quarterly via modelo 303, offsetting the IVA you paid on business purchases. Some activities, such as certain medical, educational and financial services, are exempt. Unlike France, Spain has no general small-business turnover exemption from VAT, so plan to handle IVA from your first invoice unless your activity is specifically exempt.
Worked example: an autónomo earning €40,000
Assume a freelancer with €40,000 turnover, €5,000 of deductible business expenses, in their second year (no tarifa plana), figures illustrative and before regional variation.
| Item | Amount |
|---|---|
| Turnover | €40,000 |
| Business expenses | −€5,000 |
| RETA contributions (approx., deductible) | −€4,200 |
| Net taxable income (before personal minimum) | ≈ €30,800 |
| IRPF (approx., after personal minimum) | ≈ €5,900 |
| Total tax + social security | ≈ €10,100 |
Roughly a quarter of turnover goes to the state and Seguridad Social combined here, and RETA is a larger share of it than many newcomers expect. In the first year, the tarifa plana would cut the RETA line dramatically.
Should you incorporate as an SL instead?
Above a certain income, some autónomos switch to a Sociedad Limitada (SL), Spain's limited company. An SL pays corporate income tax (Impuesto sobre Sociedades) at 25%, with a reduced 15% rate for newly created companies in their first two profit-making years. That flat rate can beat the top IRPF brackets once profits are high and you retain earnings, but an SL adds accounting cost, formalities, and the fact that you still pay yourself, and that salary is taxed again under IRPF. It rarely pays off below roughly €40,000–60,000 of profit.
Deductions autónomos often miss
- RETA contributions (fully deductible).
- A portion of home utilities and rent if you work from home and have declared it.
- Professional software, subscriptions and tools.
- Business travel, vehicle costs within the rules, and client meals within limits.
- Professional training and insurance.
Practical calendar for staying compliant
- Quarterly: modelo 130 (IRPF instalment) and modelo 303 (VAT), plus modelo 349 for EU sales if relevant.
- Monthly: RETA contribution to the Seguridad Social.
- Annually: Renta (income tax return, modelo 100), the informational summaries (modelo 390 for VAT and modelo 190), and the RETA income reconciliation.
Missing a quarterly deadline triggers surcharges that climb the longer you leave it, so put the four filing dates in your calendar the day you register. Many autónomos use a gestor (a licensed administrative adviser) for a modest monthly fee precisely because the filing rhythm is relentless and the penalties for slipping are avoidable.
Módulos: the alternative for some activities
A minority of activities, mostly certain retail, hospitality, transport and small trades, can use estimación objetiva, known as módulos, where IRPF is estimated from fixed indicators such as staff, floor area or vehicles rather than real profit. It can be advantageous if you are more profitable than the module assumes, but successive reforms have narrowed who qualifies and the government has signalled further restrictions. Most modern freelancers and consultants cannot use it and default to estimación directa (real income) instead. If your activity is on the eligible list, compare both methods carefully before opting in.
Know your number before you register
Between IRPF, income-based RETA and IVA, the Spanish autónomo system rewards people who plan ahead and punishes those who do not set money aside. The good news is that the tarifa plana makes the first year genuinely affordable, and RETA being deductible means the real burden is a little lighter than the headline. Run your figures with our Spain autónomo tax calculator to see IRPF and RETA together for 2026, compare Spain against Germany and France with the compare taxes by country tool, and use the tax set-aside calculator to reserve the right amount from each invoice. New to terms like RETA, IRPF or tarifa plana? Our tax glossary explains them clearly.
Do not guess your bill. Enter your income into the autónomo calculator now and see exactly what IRPF and RETA will cost you in 2026.