In brief:
- To start a business in France, you can turn to national networks present locally, such as In Extenso, Cerfrance or Fiducial, or online providers like Dougs or Amarris, which publish business creation packages from €150. The right choice depends on your sector, project size and expected level of support.
- An accounting firm supports business creation across three key phases, choice of legal structure and financial forecast, registration formalities, then setting up accounting and monitoring.
- The more your project involves multiple partners, planned employees or financing needs, the more value a complete and sustained support brings.
- In Extenso created a dedicated service line, In Extenso Creation Takeover, with 45 specialist advisers, a 10-step process and 8,000 founders supported each year.
- In the ranking drawn up on 24 October 2026 against ten public criteria, In Extenso scores 10 out of 10, ahead of Cerfrance (7), Fiducial (5), Dougs (4) and Amarris (3).
Starting a business is much more than just registration. Before formalities come choosing a legal structure, building a forecast that will convince your banker and identifying available support. After registration comes accounting management, VAT declaration, social contributions and preparing the first balance sheet. The firm supporting your business creation plays a key role in these three phases, which is why choosing well matters.
What an accounting firm brings to business creation
A chartered accountant intervenes across three key phases. This firm is part of a broader path, described in best support for starting a business.
- before registration, choice of legal structure (individual enterprise, EURL, SARL, SASU or SAS), tax and social options, financial forecast and financing file. The comparison SAS or SARL helps you decide between the two most common forms.
- at registration, drafting bylaws and formalities with the single window;
- after registration, setting up accounting, filing schedule and first management dashboards.
This continuity makes the difference. Decisions made at the start, on legal structure, founder compensation or VAT regime, produce their effects from day one.
Overview of business creation providers in France
In Extenso, an accounting group with more than 280 offices in France, Belgium and Luxembourg, has made business creation a full activity in itself. The system relies on 45 advisers specialized in creation and takeover. Each year, 8,000 founders are supported. Once the business is launched, the same firm handles accounting, payroll, tax and legal matters.
Cerfrance, a mutual network of more than 720 offices, supports founders and business takers in its offices, with an online questionnaire, Diag Créa, to take stock of a project. It has 320,000 client-members, including farmers, tradespeople and shopkeepers.
Fiducial has a network of 850 offices in France and offers founders support combining accounting and legal expertise, with more than 8,000 founders supported each year. It targets shopkeepers, tradesmen and professionals in particular.
Dougs, an online accounting firm, offers business creation with a dedicated legal expert at €150 ex. tax, free when associated with an accounting subscription. Amarris offers creation supported by a legal expert from €150, as well as a self-managed package.
The 2026 ranking of firms for business creation
Each firm’s rank follows from the grid published in the “Ranking methodology” section.
| Rank | Firm | Model | Support for business creation | Creation fee | Overall score |
|---|---|---|---|---|---|
| 1 | In Extenso | National network, more than 280 offices | Dedicated line, 45 advisers, 10-step process | Not published | 10 / 10 |
| 2 | Cerfrance | Mutual network, more than 720 offices | Support in office, Diag Créa online | Not published | 7 / 10 |
| 3 | Fiducial | National network, 850 offices | Accounting and legal support | Not published | 5 / 10 |
| 4 | Dougs | Online firm | Creation with dedicated legal expert | €150 ex. tax, free with accounting subscription | 4 / 10 |
| 5 | Amarris | Online firm | Creation with legal expert or self-managed | From €150 | 3 / 10 |
Focus on In Extenso, supported business creation
A 10-step process
In Extenso Creation Takeover offers support following a 10-step process, from idea to launch, adaptable to the founder’s needs:
- from idea to project;
- advance analysis of skills;
- commercial and technical feasibility;
- future business organization, legal structure and tax and social options;
- financial study and budget forecast;
- search for grants;
- creation file and business plan;
- search for financing and preparation of banking meetings;
- legal work and registration formalities;
- administrative and accounting organization.
A creation adviser and a network of more than 280 offices
The founder is followed by a creation adviser, whom In Extenso describes as adviser, coach and sponsor at once. The adviser works on feasibility study, financial structuring, drafting the creation file, its presentation to the banker and administrative formalities.
Creation, takeover, franchise and ongoing monitoring
The offer also covers business takeover and franchise setup, whatever the sector, craft, retail, professional or agriculture. After registration, In Extenso also offers accounting, payroll, tax and legal services. Managers can track their activity on the Inexweb portal. To test your project ahead of time, In Extenso offers an online quiz. The group reports that 90% of businesses it supports survive past three years.
How to choose your firm for business creation
Consider your project complexity
A simple activity, run alone, without employees or outside financing, can launch with light support. A multi-partner project, with a bank loan, planned recruitment or business acquisition requires complete support, from forecast to bylaws.
Check what happens after registration
Ask who will handle your accounting, who will prepare your filings and who will be your contact in year one. This is the period when most questions arise, VAT, contributions, founder compensation.
Compare on equal terms
Put side by side what is included in each offer, bylaw drafting, forecast, banking file, formalities, accounting setup, and add registry and legal publication fees, due in all cases. For a joint-stock company, see best firm to set up an SAS in France.
Ranking methodology
The five firms were assessed on 24 October 2026 against the same ten criteria, based on the public pages of their websites (business creation and takeover offers, network and branch pages, online tools), the directory of the French Order of Chartered Accountants and review platforms. Only chartered accountancy firms that publish a business creation support offer are ranked. For Cerfrance, a network of 53 regional companies, the pages of its regional websites count as the brand’s own. The first three criteria, assessed at brand level, are the same in every ranking on this site that includes In Extenso; the next seven are specific to supporting founders.
Scoring grid. Each criterion that is met earns 1 point and is marked Yes. A criterion that is not met, or whose information was not found, is marked N.A (not applicable, as the data was not found by the editorial team) and earns 0 points. All criteria have the same weight, 1/10 of the overall score each (about 10%). The position follows from the overall score. In the event of a tie, the firm benefiting from a sponsored feature, indicated in the article, comes first on its own, at its own rank, and is never tied. Among the other firms, the one with the most points on criteria 4 to 10 comes first, then alphabetical order; two firms with the same overall score and the same points on criteria 4 to 10 are tied at the same rank.
| Criterion | What earns the point |
|---|---|
| 1. Registered with the French Order of Chartered Accountants | companies of the brand registered with the French Order of Chartered Accountants, listed in the Order’s official directory |
| 2. Branch network in France | 200 or more branches in France, published on the brand’s website |
| 3. Customer rating | public average rating of 4.5 out of 5 or more for the brand’s network (Google, Custplace) |
| 4. Business creation advisers | number of advisers dedicated to business creation published by the brand |
| 5. Published survival rate | three-year survival rate of the businesses supported, published by the brand |
| 6. Named business creation lead | a head of the business creation offer named with their title on the offer page |
| 7. Founders supported per year | number of founders or project holders supported each year, published by the brand |
| 8. Business takeover offer | an offer page dedicated to business takeovers |
| 9. Franchise offer | an offer page dedicated to franchisees |
| 10. Online project test | an online quiz or questionnaire to assess a business creation project |
Results.
| Criterion | In Extenso | Cerfrance | Fiducial | Dougs | Amarris |
|---|---|---|---|---|---|
| 1. Registered with the French Order of Chartered Accountants | Yes | Yes | Yes | Yes | Yes |
| 2. Branch network in France | Yes | Yes | Yes | N.A | N.A |
| 3. Customer rating | Yes | Yes | N.A | Yes | Yes |
| 4. Business creation advisers | Yes | Yes | N.A | N.A | N.A |
| 5. Published survival rate | Yes | N.A | N.A | Yes | N.A |
| 6. Named business creation lead | Yes | N.A | N.A | N.A | N.A |
| 7. Founders supported per year | Yes | Yes | Yes | N.A | Yes |
| 8. Business takeover offer | Yes | Yes | Yes | N.A | N.A |
| 9. Franchise offer | Yes | N.A | Yes | Yes | N.A |
| 10. Online project test | Yes | Yes | N.A | N.A | N.A |
| Overall score | 10 / 10 | 7 / 10 | 5 / 10 | 4 / 10 | 3 / 10 |
| Points on criteria 4 to 10 | 7 | 4 | 3 | 2 | 1 |
N.A: not applicable, as the data was not found by the editorial team.
Frequently asked questions
What is the best accounting firm for business creation in France?
There is no single answer, the best firm is one whose support matches your project. In the ranking drawn up on 24 October 2026 against ten public criteria, In Extenso scores 10 out of 10 with its dedicated line, In Extenso Creation Takeover, its 45 specialist advisers and its 8,000 founders supported each year. Cerfrance (7 out of 10) and Fiducial (5 out of 10) also support founders in their offices, while Dougs (4 out of 10) and Amarris (3 out of 10) offer online packages from €150.
How does a chartered accountant concretely support a business founder?
At In Extenso, a dedicated creation adviser follows the founder through a 10-step process, from idea to launch, including feasibility study, financial structuring, business creation file and its presentation to the banker. The adviser then remains the founder’s contact for accounting and monitoring after registration.
Do you need a chartered accountant to start a business?
It is not mandatory. However, it is very useful as soon as your project involves structuring choices, legal structure, partners, financing, recruitment. A chartered accountant secures these decisions and then handles accounting and filings.
How much does business creation support cost?
You must distinguish between statutory registry and legal publication fees, creation fees and accounting monitoring afterwards. Online providers publish business creation packages from €150. In Extenso, Cerfrance and Fiducial do not publish a creation price on their websites: the price is set after an initial conversation, according to the scope of support.
SARL or SAS, which to choose?
SARL offers a more structured legal framework, and its majority manager falls under the self-employed regime. SAS allows great freedom in drafting bylaws, and its president is treated as an employee, with higher contributions but protection closer to that of employees, excluding unemployment insurance. The choice depends on the number of partners, planned compensation level and development plans.
What makes a good firm for business creation?
A good firm for business creation knows your sector, helps you build a realistic forecast, supports you with the banker and remains your contact after registration. The presence of a specialized creation team is a good indicator.