Auto-Entrepreneur and SIRET: Complete Guide to Getting Started

Just created your auto-enterprise or thinking about it? The SIRET is at the heart of your business. This complete guide explains everything you need to know.

What is a SIRET for an Auto-Entrepreneur?

As an auto-entrepreneur, you are considered a sole proprietorship. You therefore receive a SIRET number like any French company.

Your professional identity

SIREN (9 digits): Identifies your business
SIRET (14 digits): SIREN + NIC, identifies your establishment
APE Code: Your main activity code

How to Get Your SIRET?

Step 1: Declare your activity

Since 2023, auto-enterprise creation is done on the one-stop shop:

formalites.entreprises.gouv.fr

Step 2: Provide documents

ID document
Proof of address
Declaration of no criminal record
For some professions: diploma or qualification certificate

Step 3: Receive your SIRET

After validation of your file (1-3 business days), you will receive:

A SIRENE registration certificate by email
A status notice by postal mail (1-2 weeks)

Good news: Creating an auto-enterprise is free!

Where to Use Your SIRET?

Mandatory documents

Your SIRET must appear on:

Invoices: Required for all billing
Quotes: Recommended for professionalism
Contracts: To identify your business
Website: In legal notices

Administrative procedures

Revenue declaration (URSSAF)
Tax declaration
Opening a professional bank account
Aid applications (ACRE, etc.)

Business relationships

Registration on platforms (Malt, Fiverr, etc.)
Responding to tenders
B2B partnerships

Auto-Entrepreneur Invoice Example

Jean DUPONT

Auto-entrepreneur

123 rue de la Paix

75001 Paris

SIRET: 123 456 789 00012

APE Code: 6201Z

VAT not applicable, art. 293 B of CGI

Invoice #2024-001 | Date: 01/15/2024

Common Mistakes to Avoid

Don't invoice without your SIRET

You must have your SIRET before issuing invoices.

Using a fake SIRET

This is illegal and subject to criminal penalties.

Forgetting to update your address

A move must be declared within 1 month.

Frequently Asked Questions

Can I start working before getting my SIRET?

You can start prospecting and negotiating, but you cannot officially invoice before having your SIRET.

Does my SIRET change if I move?

Your SIREN stays the same, but the NIC (and therefore the SIRET) may change if you declare a new establishment.

How do I find my SIRET?

Check avis-situation-sirene.insee.fr with your name.

Is my SIRET public?

Yes, the SIRET is public information accessible to all on official databases.

Useful Resources

autoentrepreneur.urssaf.fr - Declarations and payments
impots.gouv.fr - Tax declarations
formalites.entreprises.gouv.fr - Modifications and closure