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How to Open a Business in Terrassa (2026)

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Cost

Free

Tax registration and social security: free. Business license municipal fee varies depending on the municipality and type of activity (from €100 to several thousand).

Time at office

2-4 hours (basic procedures)

Estimated time

1-4 weeks for harmless activities; months for environmentally impactful activities

Quick summary

Guide for opening a business or commercial establishment in Terrassa. Licensing, tax registration and municipal procedures. Step-by-step updated 2026.

Required documents

  • Valid DNI or NIE

    For the business owner or founding partners.

  • Tax registration (model 036 or 037)

    Communication of start-up activity to AEAT.

  • ?

    RET registration for self-employed (if applicable) Optional

    Enrollment in the Self-Employed Special Social Security Regime.

    ⚠️ For individual self-employed persons

  • Business license or declaration of responsibility

    Municipal authorization to operate the business in the premises.

  • Lease agreement or property deed

    Proof of use of the premises where the business operates.

0 €
Tax registration and social security: free. Business license municipal fee varies depending on the municipality and type of activity (from €100 to several thousand). €0.00
€0.00
€0.00

: 2026

Step by step

  • 1

    Choose a legal form and business category

    Go to official site

    Decide whether you operate as an individual self-employed (natural person) or as a company (SL, SA). The IAE (Tax on Business Activities) code determines specific tax obligations.

    !

    Expert tip

    "For beginners, the simplest and most economical option is to be self-employed. An SL offers more asset protection but requires more management."

  • 2

    Tax registration — model 036 or 037

    Go to official site

    Notify AEAT of start-up activity by submitting form 036 (complete) or 037 (simplified for self-employed with no intracommunity transactions). You can do this online through the AEAT portal.

    !

    Expert tip

    "Tax registration must be done before or on the start of business activity. It is free."

  • 3

    RET registration for self-employed (if applicable)

    Go to official site

    Register with RETA in the Social Security Electronic Portal within 30 days after tax registration.

    !

    Expert tip

    "The minimum monthly fee for a self-employed in 2026 is €225 per month for low income (net earnings system). If you expect to earn little, declare low real income and pay less."

  • 4

    Apply for business license with the City Council

    Submit a business license application or declaration of responsibility at Terrassa City Hall depending on your type of business. Harmless activities (offices, retail without risks) are usually processed immediately with a responsible declaration.

    !

    Expert tip

    "Check first with the City Council whether your activity requires prior licensing or can be handled with a declaration — it may save you weeks of waiting."

Offices and service points - Terrassa

Terrassa City Hall — Urbanism / Licenses Department

Consult exact address on Terrassa City Hall’s website

Monday to Friday: 09:00 – 14:00 (appointment required in many city halls)

Frequently asked questions

What is CIRCE and what does it do?
CIRCE (Center for Information and Network of Business Creation) is the government’s online platform to register a company. It allows you to complete all procedures required for setting up a new limited company in one place, simultaneously.
Do I need an opening license for my business?
It depends on your type of activity. Harmless activities (shops, offices, hair salons) generally require only a responsible declaration and prior notification to start operating immediately. More impactful activities (bars, workshops, discos) may need a prior license that can take months.
How much does it cost to become self-employed?
Tax registration and social security are free. The monthly fee for 2026 is €225 for low income up to €500 for high income. There are incentives for new self-employed (flat rate) during the first year.

Official sources and useful links

This guide is for informational purposes only. Always check the official source for current information.