For most freelancers and solo entrepreneurs in Spain, a sole proprietorship is the simpler option, while an SL company (Sociedad Limitada) is generally better suited to businesses seeking limited liability, partners, investment, or long-term growth. The right choice also depends on your business activity, financial and legal risk, expected income, ownership plans, tax position, and administrative requirements.
In this guide, we compare sole proprietorship vs SL company in Spain, covering registration, taxation, liability, costs, flexibility, and scalability to help you choose the structure that best fits your business.
Read More: Spain company registration process Guide
Sole Proprietorship vs SL Company in Spain: Key Difference
| Factor | Autónomo (Sole Proprietorship) | SL Company (Sociedad Limitada) |
|---|---|---|
| Legal entity | No separate legal entity | Separate legal entity |
| Ownership | One individual | One or more shareholders |
| Liability | Generally unlimited personal liability | Generally limited to the company and shareholders’ legal obligations |
| Minimum capital | No minimum share capital | Can be incorporated with €1 share capital |
| Setup | Simpler and faster | More formal incorporation process |
| Taxation | Personal income tax (IRPF) | Corporate income tax (Impuesto sobre Sociedades) |
| Administration | Generally simpler | More accounting and corporate compliance |
| Suitable for | Freelancers and small businesses | Businesses planning to grow, hire, or have partners |
| Raising investment | More difficult | Generally easier |
1. Sole Proprietorship (Autónomo)
A sole proprietorship, known in Spain as an autónomo, is the simplest business structure for an individual carrying out an economic activity independently.
It is commonly used by freelancers, consultants, independent professionals, and entrepreneurs operating small businesses.
Who is it suitable for?
- Freelancers and independent professionals
- Solo entrepreneurs
- Businesses with relatively simple operations
- Entrepreneurs who want to start with lower administrative requirements
Key features include:
- No separate legal entity from the owner
- The owner generally has personal liability for business obligations
- Relatively simple registration and administration
- No minimum share capital requirement
- Business profits are generally subject to personal income tax
2. SL Company (Sociedad Limitada)
An SL company (Sociedad Limitada) is a separate legal entity from its shareholders. It is commonly chosen by entrepreneurs who want to build a company, work with partners, employ staff, or separate business activities from their personal affairs.
Who is it suitable for?
- Entrepreneurs planning to scale
- Businesses with greater commercial or financial risk
- Companies with multiple shareholders
- Entrepreneurs seeking a corporate structure for investment or expansion
An SL can currently be incorporated with €1 of share capital. If the company’s capital remains below €3,000, at least 20% of the company’s profits must be allocated to the legal reserve until the company’s capital plus legal reserves reaches €3,000. If the company is liquidated and its assets are insufficient to meet its obligations, the shareholders may also be jointly liable for the difference between €3,000 and the subscribed capital.
Registration Process for Sole Proprietorship and SL Company
How to Register as a Sole Proprietorship in Spain?
Starting as an autónomo is generally simpler than incorporating an SL.
The main steps include:
- Register with the Spanish Tax Agency (Agencia Tributaria) using the applicable registration procedure.
- Register with the Spanish Social Security system under RETA where required.
- Select the appropriate economic activity classification, including the relevant IAE activity.
- Complete any VAT and other tax registrations applicable to the business activity.
Spain abolished Modelo 037 in 2025, so new registrations should follow the current Agencia Tributaria procedures rather than relying on the former simplified Form 037 process.
How to Register an SL Company in Spain?
Establishing an SL involves more formal corporate procedures, including:
- Choose and reserve a company name: Apply for a name certificate through the Central Commercial Registry (Registro Mercantil Central).
- Prepare the Articles of Association: Define the company’s purpose, ownership and governance arrangements.
- Provide share capital: An SL can be incorporated with a minimum share capital of €1. If the capital is below €3,000, the company is subject to the special legal-reserve and shareholder-liability rules described above.
- Sign the public deed: The incorporation deed is executed before a Spanish notary.
- Register the company: Submit the incorporation documents to the relevant Commercial Registry.
- Complete tax and Social Security registrations: Obtain the required tax identification and complete registrations applicable to the company and its directors/employees.
The process is more formal than registering as a Sole Proprietorship and may require assistance from a lawyer, gestor, or company formation specialist.
Taxation: Sole Proprietorship vs. SL Company
Tax treatment is one of the most important differences between a Sole Proprietorship and an SL.
Taxes for a Sole Proprietorship
A sole proprietorship generally pays tax on business profits through Personal Income Tax (IRPF) rather than Corporate Income Tax.
The applicable IRPF rate is progressive and depends on taxable income and the relevant regional tax scale.
A sole proprietorship may also have obligations relating to:
- VAT (IVA) where applicable
- Personal income tax payments and returns
- Social Security contributions under RETA
- Business records and accounting documentation
The Spanish Social Security system uses an income-based contribution framework for sole proprietorships, so contributions depend on the applicable contribution system and the entrepreneur’s expected or actual net returns rather than a single universal monthly amount.
Taxes for an SL Company
An SL is generally subject to Corporate Income Tax (Impuesto sobre Sociedades).
The general Corporate Income Tax rate is 25%. Spain also provides reduced rates for qualifying smaller companies under the rules applicable for 2026. Newly created companies carrying out economic activities can generally apply a 15% Corporate Income Tax rate in the first tax period in which their taxable base is positive and the following tax period, subject to the applicable conditions.
For qualifying micro-enterprises with turnover below €1 million, the 2026 rates are 19% on the first €50,000 of taxable income and 21% on the remainder. Other reduced-rate rules may apply depending on the company’s circumstances.
An SL may also have obligations relating to:
- VAT (IVA)
- Withholding taxes
- Corporate tax returns
- Accounting records
- Annual accounts
- Social Security contributions for directors and employees, depending on their circumstances
Therefore, it is not always accurate to say that an SL is simply “better for taxes.” The overall tax outcome depends on profit levels, remuneration, distributions, Social Security, and the entrepreneur’s circumstances.
Liability differences between both structures
Liability is one of the most significant differences between a Sole Proprietorship and an SL.
Sole Proprietorship
An autónomo (Sole Proprietorship) does not have a separate legal personality from the individual owner. As a result, the entrepreneur generally bears personal responsibility for the business’s debts and obligations.
This can make a sole proprietorship less attractive for businesses that involve significant contractual, financial, or operational risks.
SL Company
An SL has its own legal personality. In general, shareholders benefit from limited liability, meaning their liability is normally connected to their contribution and the company’s legal obligations.
However, limited liability is not an absolute guarantee against personal liability. Directors and shareholders may have personal responsibilities in specific circumstances under Spanish law.
For businesses with greater risk exposure, an SL can therefore provide a stronger legal separation between the business and its owners.
Costs and Ongoing Maintenance Differences
Sole Proprietorship (Autónomo)
A sole proprietorship generally has lower setup and administration costs.
Typical ongoing requirements may include:
- RETA Social Security contributions
- Tax filings
- Business records
- Accounting or gestor services where needed
This makes the structure attractive for entrepreneurs who want to start with a relatively simple setup.
SL Company
An SL normally involves higher administration and compliance requirements.
Costs can include:
- Notary fees
- Commercial Registry fees
- Accounting services
- Corporate tax compliance
- Annual accounts
- Corporate administration
- Social Security costs where applicable
Although an SL requires more administration, the structure can become more suitable as the business grows.
Scalability and Growth Comparison between both structures
A Sole Proprietorship can grow and hire employees, but the structure remains closely connected to the individual entrepreneur.
An SL is generally better suited to businesses that expect to:
- Add shareholders or partners
- Hire employees
- Seek external investment
- Expand operations
- Build a separate corporate brand
- Transfer or restructure ownership
The corporate structure can also make it easier to separate ownership interests through shares.
Which Structure More Flexibility: Sole Proprietorship or SL Company?
Sole Proprietorship
A sole proprietorship has direct control over business decisions and generally faces fewer corporate formalities. This makes it particularly attractive for freelancers and entrepreneurs operating alone.
SL Company
An SL involves more administration, but it provides a formal framework for shareholders, directors, ownership transfers, investment, and business expansion.
For entrepreneurs who expect their business structure to become more complex, this additional formality can be an advantage.
Which Is Better for Entrepreneurs in Spain?
There is no single structure that is best for every entrepreneur.
Choose a Sole Proprietorship if:
- You are a freelancer or solo entrepreneur.
- Your business has relatively low financial or legal risk.
- You want a simpler setup.
- You want lower initial administrative requirements.
- You do not need partners or external investors.
Choose an SL Company if:
- You plan to scale the business.
- Your business carries greater financial or contractual risk.
- You want a separate legal entity.
- You expect to work with partners or investors.
- You plan to build a larger company with employees.
- Corporate structure and ownership flexibility are important to you.
Can You Start as a Sole Proprietorship and Later Create an SL?
Yes. An entrepreneur can start their activity as an autónomo (Sole Proprietorship) and later establish an SL when the business grows or their circumstances change.
This can be practical for freelancers and small businesses that want to test their business model before moving to a more formal corporate structure.
The decision to change structure should take into account taxation, contracts, assets, employees, existing liabilities, and the administrative consequences of transferring the business activity.
Conclusion
Choosing between a Sole Proprietorship and an SL company in Spain depends primarily on your business activity, risk exposure, expected growth, ownership plans, and tax circumstances.
An Sole Proprietorship offers a simpler structure for freelancers and solo entrepreneurs, while an SL provides a separate legal entity and a more suitable framework for many businesses planning to grow, work with partners, or attract investment.
If you are planning to set up your company in Spain and need help choosing the appropriate structure, Contact our Spanish incorporation experts.
FAQ’s
Is an SL better than an Sole Proprietorship in Spain?
Not necessarily. An Sole Proprietorship can be more suitable for freelancers and low-risk businesses because it is simpler to establish and administer. An SL may be more appropriate for businesses seeking growth, partners, investment, or greater legal separation.
What is the minimum capital for an SL in Spain?
An SL can currently be incorporated with €1 of share capital. If the company’s capital is below €3,000, specific legal reserve and shareholder-liability rules apply until the €3,000 threshold is reached.
Which has higher taxes, an Sole Proprietorship or an SL?
There is no universal answer. Sole Proprietorship generally pay IRPF on business profits, while SL companies generally pay Corporate Income Tax. The effective tax outcome depends on income, profit, remuneration, distributions, Social Security and other individual circumstances.
