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Opening a subsidiary in France: the complete guide

Establishing a subsidiary in France is one of the most common and reliable ways for U.S. companies to build a meaningful local presence. A subsidiary is a separate legal entity, most often a SAS (Société par actions simplifiée) or a SASU (Société par actions simplifiée unipersonnelle). In most cases, that structure means the parent company’s liability is limited to what it contributes as share capital.

While the process is governed by French law, it typically follows a clear four-phase path, from the initial decision to final registration. This guide walks you through every step to ensure your expansion is seamless and compliant.

1. The decision and strategic legal structuring

Before you start any formal steps in France, the U.S. parent company should formally approve the project. In practice, that usually means documenting the decision through a board or shareholder resolution, confirming the company name, and appointing the person who will legally represent the new entity in France.

Choosing the right legal vehicle

You’ll need to choose the legal structure carefully. For foreign groups and scale-ups, the SAS is often the default choice. This is because it offers flexible governance and can be designed to align more naturally with U.S. corporate practices. Unlike the more rigid SARL, the SAS allows shareholders to define the rules of operation in the bylaws, which is a major advantage when setting up a subsidiary in France.

Appointing the legal representative

The “Président” is the mandatory legal representative. For a subsidiary in France, this person can be a physical person or a legal entity (the U.S. parent company). However, having a local contact or a firm like Impulsa x Orbiss to navigate the administrative landscape is highly recommended to avoid delays in the signature process.

2. Legal foundations and capital deposit

Once the strategic decision is made, the legal team focuses on the core formation steps that make the company “real” in the eyes of French authorities.

Drafting the bylaws (Statuts)

These documents set the rules of the subsidiary: governance, decision-making, business purpose, and how the parent company exercises its rights as a shareholder. This step needs to be drafted carefully so French legal requirements and U.S. operating expectations work well together. For a subsidiary in France, these bylaws must be translated or drafted bilingually to ensure the U.S. HQ fully understands the commitments made.

The capital deposit process

You must open a bank account in the name of the company “in formation” and deposit the initial share capital. Even if the amount is symbolic (often as low as €1 for a SAS), the bank issues a certificate of funds deposited (certificat de dépôt des fonds), which is strictly required for registration.

Note: Opening a bank account from abroad can be a challenge. Banks will perform deep “Know Your Customer” (KYC) checks on the U.S. parent company and its ultimate beneficial owners.

Registered address and public notice

The company must have a registered office address (siège social) in France. This can be a commercial lease or a domiciliation agency. Once the address is secured, a notice of incorporation must be published in a legal announcement journal, called a JAL (journal d’annonces légales). This is a required public disclosure step for any new subsidiary in France.

3. Online registration via the “Guichet Unique”

Moving forward to the administrative phase, company formation formalities are now handled online. Since 2023, the “Guichet Unique” is the mandatory government one-stop portal operated by the INPI. This is where the final registration file is submitted.

Required documentation for U.S. Parent companies

In general, the registration file for a subsidiary in France includes:

  • The signed bylaws (statuts).
  • The certificate of funds deposited from the bank.
  • Documents proving the U.S. parent company’s existence (Certificate of Incorporation and Good Standing).
  • Identity and non‑conviction declarations for the appointed corporate officer.

Depending on the state where the parent company is incorporated, these documents may need a certified translation and, in some cases, an apostille to be legally recognized by the French administration.

Receiving your identifiers: SIREN and SIRET

Once the file is validated, the company is officially registered. You will receive two major identifiers:

  1. SIREN: The company’s unique 9-digit ID number in France.
  2. SIRET: A 14-digit ID number for a specific establishment or location.

U.S. teams often think of these like a “business identifier” and a “site identifier.” They are used across banking, invoicing, payroll, and all administrative processes.

The Kbis: The company’s ID card

You will also receive official proof of registration, known as the Kbis. For a subsidiary in France, the Kbis is the only official document proving the legal existence of the company. You will need it to unlock your bank account, sign contracts with vendors, and set up utilities.

4. Immediate compliance obligations post-registration

Once registration is issued, the subsidiary is legally active. Beyond the legal formation, your local obligations begin immediately to ensure the company remains in good standing.

Tax registration and VAT (TVA)

The company falls under French corporate income tax, known as IS (impôt sur les sociétés). However, the most critical immediate step is VAT registration. If your subsidiary in France carries out taxable sales, it’s important to get your VAT number early. French VAT (TVA) follows strict EU rules that differ significantly from U.S. Sales Tax.

Accounting standards and the PCG

The company must maintain its books under French accounting rules, structured under the Plan Comptable Général (PCG). In practice, this means:

  • Setting up a French chart of accounts.
  • Monthly or quarterly bookkeeping.
  • Ensuring local processes can feed into U.S. reporting and consolidation under U.S. GAAP.

HR, Payroll, and URSSAF

If the subsidiary hires employees, it must be set up with social organizations, primarily URSSAF. French payroll is complex, with numerous social contributions that must be calculated and paid monthly. There is no “at-will” employment; every hire requires a formal written contract compliant with the relevant National Collective Bargaining Agreement (CCN).

Conclusion: Bridging the gap between the U.S. and France

Opening a subsidiary in France is a structured process that requires precision. While the administrative steps are now digital, the nuances of French labor law, tax compliance, and accounting standards remain.

Getting expert guidance from a bicultural partner like Impulsa x Orbiss is the safest way to make sure your U.S. operating habits translate cleanly into French compliance from day one. We help you build a robust reporting bridge between your new French entity and your U.S. headquarters.