Start Your Own Business in Spain
Self-employment is the starting point. When you are ready to protect your personal assets, bring on partners, or unlock tax advantages, it may be time to form a company in Spain.
HustleHub AI provides general information only, not tax, legal, or financial advice. Spanish tax and business rules vary by Comunidad Autónoma. Always check official guidance from Agencia Tributaria or Seguridad Social, or speak to a qualified asesor fiscal or gestor.
From side hustle to business owner
Many successful businesses start as side hustles. The typical progression in Spain:
Side job (trabajo extra)
Earning extra alongside employment or casually. Many start informally.
Autónomo
Registered with Hacienda and Seguridad Social. Monthly cuota. Quarterly declarations. Personal liability.
Sociedad Limitada (S.L.)
Separate legal entity. Limited liability. Minimum capital €3,000. Corporate tax.
Not everyone needs to progress to step 3. Many self-employed people stay that way permanently and do very well.
Business structures compared
| Feature | Autónomo | S.L. (Sociedad Limitada) | S.A. (Sociedad Anónima) |
|---|---|---|---|
| Setup | Hacienda + Seguridad Social | Notary + Registro Mercantil (€600-€1,500) | Notary + Registro Mercantil (€1,500+) |
| Minimum capital | None | €3,000 | €60,000 (€15,000 paid in) |
| Liability | Personal (unlimited) | Limited to company assets | Limited to company assets |
| Tax | IRPF (19-47%) + IVA + cuota | Impuesto de Sociedades 25% (15% for new companies, first 2 years) | Impuesto de Sociedades 25% |
| Admin | Quarterly Modelo 303/130 | Full accounting + annual accounts at Registro Mercantil | Most complex — board, audit, annual accounts |
| Best for | Solo operators, lower income | Small-medium businesses, liability protection | Large companies, multiple shareholders |
This is a simplified comparison. The right structure depends on your income, risk, and growth plans. Always consult a qualified professional.
When to stay solo vs form a company
Stay self-employed when...
- Your income is moderate and IRPF rate is acceptable
- You are a solo operator without employees
- You want to avoid the cost and complexity of forming an S.L.
- You are testing a business idea
Consider an S.L. when...
- Your net income is high enough that corporate tax (25% or 15% for new companies) is more efficient
- You want personal liability protection
- You plan to bring in partners or investors
- Clients or contracts require a company structure
How to form a company in Spain
- Choose a company name and get certificate of uniqueness from the Registro Mercantil Central
- Draft the company statutes (estatutos sociales)
- Open a bank account and deposit the minimum capital (€3,000 for S.L.)
- Execute the incorporation deed (escritura de constitución) before a notary
- Get a provisional NIF (Número de Identificación Fiscal) from Hacienda
- Register at the Registro Mercantil (Commercial Registry)
- Register with Hacienda (Alta Censal) and Seguridad Social
- Get the definitive NIF
- Set up full double-entry accounting
- Consider hiring an asesor fiscal or gestoría for ongoing compliance
Spain's autónomo system is known for its relatively high fixed costs (the monthly cuota, even with tarifa plana) and quarterly administrative burden. However, the 2023 reform linking the cuota to real income has made the system fairer for lower earners. New S.L. companies benefit from a reduced Impuesto de Sociedades rate of 15% for the first two profitable years.
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HustleHub AI provides general information only, not tax, legal, or financial advice. Spanish tax and business rules vary by Comunidad Autónoma. Always check official guidance from Agencia Tributaria or Seguridad Social, or speak to a qualified asesor fiscal or gestor.