At some point, almost everyone considers working for themselves. Sometimes it starts with a first freelance assignment, sometimes after leaving a salaried role, and sometimes as a carefully considered decision after weighing up different options. Whatever the starting point, the same question eventually arises: how to register as self-employed in Spain and where to begin.
When searching for information, it is common to find endless lists of procedures, unfamiliar acronyms and conflicting advice. All of this can make the process seem far more complicated than it actually is. Registering as self-employed means enrolling in the Special Scheme for Self-Employed Workers (RETA) and completing a series of administrative steps in a specific order. Once you understand what needs to be done and when, the process becomes much clearer.
This article offers a clear, practical guide to registering as self-employed in Spain, covering the usual steps, the costs to consider and the key points worth reviewing carefully before starting your activity.
Prerequisites for registering as self-employed
Before starting any paperwork, it is important to confirm that you meet the basic requirements to work as a self-employed professional. These are not complex, but they do need to be met.
To register as self-employed in Spain, you must:
- Be over 18 years old.
- Have a valid Spanish ID number (DNI or NIE).
- Live in Spain or carry out your economic activity within Spanish territory.
- Carry out an economic activity on a personal, direct and regular basis.
You also need to have a clear idea of the activity you intend to carry out, as this affects later steps such as choosing the correct tax classification and determining your tax obligations.
There is no need to set up a company or provide any minimum share capital. Registering as self-employed is an administrative procedure that allows you to work on your own account and issue invoices legally.
Steps to register as self-employed
Registering as self-employed can feel overwhelming, not because it is particularly difficult, but because administrative processes involve official forms, public bodies, deadlines and tax concepts that are unfamiliar to most people.
The process consists of a series of specific steps, each with a clear purpose. This section explains them in a logical and practical order, so you know which procedure corresponds to each stage and how to move forward.All procedures can be completed either online or in person. In both cases, the substance of the process is the same; what really matters is knowing what information needs to be declared and in what order.
Step 1. Registering with the Tax Agency (form 037 or 036)
The first step is notifying the Spanish Tax Agency that you are starting an economic activity. This is done by completing form 037 or, in certain cases, form 036.
In this form, you will need to provide information such as:
- The start date of your activity.
- The type of activity you will carry out.
- The corresponding Economic Activity Tax (IAE) classification.
- The applicable VAT and personal income tax regimes.
- Your tax address and the place where the activity will be carried out.
In most cases, form 037 is sufficient and is typically used by people registering as self-employed for the first time. Form 036 is reserved for more specific or complex situations.
This procedure can be completed either online or in person. The information provided at this stage is essential, as it determines your future tax obligations and must accurately reflect the activity you will actually carry out.
Step 2. Registering with Social Security (RETA)
Once you have registered with the Tax Agency, the next step is to register with Social Security under the Special Scheme for Self-Employed Workers (RETA). This is the step that officially activates your social security contributions as a self-employed worker.
Registration must be completed within the legal deadline and can be done on the same day as your tax registration. At this point, you will need to indicate, among other details:
- The start date of your activity.
- Your chosen contribution base.
- The collaborating mutual insurance provider.
- Coverage for common and professional contingencies.
This step is particularly important, as it determines your monthly social security contribution and the benefits you will be entitled to. The information provided must be consistent with the details previously declared to the Tax Agency.
Step 3. Licences and additional procedures depending on the activity
After registering with both the Tax Agency and Social Security, you need to check whether your activity requires any additional licences or authorisations. Not all activities do, but when they are required, they must be obtained before starting work.
These requirements depend on the type of activity and where it is carried out. Common examples include:
- Opening or activity licences for premises open to the public.
- Municipal notifications or authorisations.
- Membership of a professional body for regulated professions.
- Registration in specific registers or compliance with sector-specific regulations.
This step often raises questions because there is no single rule that applies in all cases. The key is to identify whether your activity is subject to any specific regulation and, if so, which public authority is responsible.
If no additional licences or authorisations are required, there is no procedure to complete at this stage and you can move straight on to starting your activity and meeting your tax and accounting obligations.
Step 4. Initial tax and accounting obligations
Once the necessary registrations have been completed and any additional procedures addressed, starting your activity brings with it a series of ongoing tax and accounting obligations that must be met on a regular basis.
As a self-employed professional, you will need to:
- File the relevant quarterly VAT and income tax returns.
- Submit annual tax summaries.
- Issue invoices in accordance with current regulations.
- Keep invoices and supporting documents for the legally required retention periods.
These obligations apply from the moment you start your activity, even if no income is generated during a particular period. For this reason, it is essential to know which forms need to be submitted and the applicable deadlines.
Although hiring an accountant or tax adviser is not mandatory, many people choose professional support to ensure their tax and accounting obligations are handled correctly from the outset.
Costs of registering as self-employed
Registering as self-employed does not involve a direct administrative fee, but it does come with a number of associated costs that are important to understand from the beginning. Some are mandatory and recurring, while others depend on the activity you carry out and how you choose to organise your work.
Social security contributions
The main fixed cost is the monthly social security contribution paid to Social Security. The amount depends on the current contribution system and the income you declare.
During the first months of activity, new self-employed workers may benefit from reduced contribution rates, provided they meet the established requirements. After this initial period, the contribution is adjusted according to the declared net income.
Tax and management costs
In addition to social security contributions, working as self-employed usually involves other ongoing expenses, such as:
- Quarterly VAT and income tax payments, where applicable.
- Accountancy or tax advisory services, if you choose to outsource tax and accounting management.
- Invoicing or accounting software, if you use dedicated digital tools.
These costs are not part of the registration process itself, but they are part of the normal operation of the activity.
Other possible costs depending on the activity
Depending on the type of work you do, there may be other initial or recurring costs, including:
- Licences or municipal fees.
- Professional body membership fees.
- Public liability insurance.
- Materials, equipment or tools required to carry out the work.
Not all self-employed professionals face the same expenses, but identifying them in advance helps avoid unexpected costs and allows you to plan more realistically.
Registering as self-employed is the administrative starting point for any freelance or independent activity. Defining these initial steps properly makes ongoing management easier and helps avoid unnecessary corrections later on. In many cases, this process goes hand in hand with other administrative and financial decisions that are best organised from the outset. At BEAC, a consultancy based in Las Palmas, we support self-employed professionals and businesses when they start their activity, taking care of administrative management and the financial analysis needed to get started in an organised and secure way. We work with both freelancers and companies from the very first steps.
