Electronic Signature for SARL Bylaws in 2026

Introduction: Dematerialising SARL creation, a consolidated legal reality

Since the PACTE law of 2019 and Ordinance No. 2021-1192 of 15 September 2021 reforming secured transactions law and confirming the evidentiary value of acts under private electronic signature, electronic signature of SARL bylaws is legally valid in France. In 2026, the majority of commercial court registries accept fully dematerialised creation files via INPI's single window, opened since January 2023. For entrepreneurs, members and accountants, understanding when and how to use electronic signature when incorporating a company has become an essential skill. This article details the applicable framework, required signature levels, pitfalls to avoid and best practices for smooth and compliant business creation.

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Why electronic signature is becoming essential in SARL creation

A favourable regulatory context since 2021

Ordinance No. 2021-1192 amended Article 1367 of the Civil Code to consolidate the recognition of electronic signature in legal acts, including acts constituting companies. In parallel, Decree No. 2021-1572 of 2 December 2021 clarified the application procedures for acts under private electronic signature filed with the registry. Concrete result: a constituent act of a SARL signed electronically by all founding members presents the same evidentiary force as an original paper document, provided that the solution used complies with eIDAS regulations and their technical requirements.

In practice, the INPI single window has allowed since 2023 the filing of the entire creation file online, by attaching the bylaws in electronically signed PDF format. Registries process these files within the same timeframes as paper files — or even faster, as OCR and automated checks reduce rejections for formal errors.

Concrete benefits for founders and their advisers

Sectoral studies published by CPME and the National Federation of Accountants estimate that dematerialising the creation process reduces by 40 to 60% the administrative time spent on collecting and sending documents. For an accounting firm managing several dozen creations per year, this represents hundreds of saved hours. For an individual entrepreneur creating their first SARL, the elimination of back-and-forth postal or physical exchanges with co-members is a decisive advantage, especially when they are geographically dispersed.

The Certyneo ROI calculator allows you to estimate precisely the savings achievable depending on the volume of files processed annually.

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Which level of electronic signature for SARL bylaws?

The three eIDAS levels and their applicability

Regulation eIDAS No. 910/2014, directly applicable in French law, distinguishes three levels of electronic signature:

• Simple Electronic Signature (SES): basic identification of the author, limited evidentiary value.
• Advanced Electronic Signature (AES): uniquely linked to the signer, allowing their identification, created from data under their exclusive control, and detecting any subsequent modification of the document.
• Qualified Electronic Signature (QES): the highest level, equivalent to a handwritten signature under European law, issued by a Qualified Trust Service Provider (QTSP) registered on the national trust list.

For SARL bylaws under private deed — the most common form — Advanced Electronic Signature (AES) is generally sufficient and constitutes the standard recommended by legal practitioners. It offers a level of security adapted to constituent acts while remaining accessible and smooth for signatories.

Special case: SARLs with real estate contribution or notarial acts

When contributions in kind include real property, the bylaws must be drawn up by notarial act (Article L.223-9 of the Commercial Code). In this case, it is the notary who resorts to their own qualified electronic signature, in accordance with the rules of the notarial chamber. "SaaS" electronic signature of members does not substitute for mandatory notarial intervention.

Similarly, if the SARL is subject to specific formalities (e.g. regulated sector requiring prior approval), it is advisable to check with a specialised legal firm whether particular formal requirements apply.

Timestamping and archiving: underestimated obligations

Beyond the signature itself, the legal value of an electronic act also rests on qualified timestamping (ETSI EN 319 422 standard) and the ability to produce a complete audit trail in case of dispute. A professional electronic signature solution must generate an unforgeable audit log mentioning the signer's identity, date and time of signature, IP address and cryptographic digest of the document. These elements are essential to enforce the signature against third parties — including the registry or the tax authorities.

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Practical process: signing your SARL bylaws online step by step

Step 1 — Document preparation

SARL bylaws must necessarily mention, according to Article L.223-7 of the Commercial Code: the corporate form, corporate purpose, name, registered office, share capital, contributions of each member, distribution of shares and duration of the company. It is recommended to work from templates compliant with current regulations. The Certyneo AI-powered contract generator offers updated bylaw templates, pre-formatted for filing with INPI's single window.

Once the document is finalised and converted to PDF/A (long-term archiving format recommended by ISO 19005 standard), it is ready to be sent for signature.

Step 2 — Identification of signatories and sending

Each founding member must be invited to sign via the electronic signature platform. For AES compliant with eIDAS, signer identification is generally carried out by:

• An OTP code (one-time password) sent by SMS to the telephone number previously verified;
• Document identity verification (scan of ID card or passport) for higher amounts or stakes.

The platform then generates a secure signature link transmitted to each member. They can sign from any device (computer, tablet, smartphone) without software installation.

Step 3 — Recovery and filing with the registry

Once all members have signed, the platform produces an electronically signed PDF document, accompanied by its signature certificate and audit trail. This document can be directly filed on the guichet-entreprises.fr portal or formalites.entreprises.gouv.fr (INPI). The registry verifies the validity of the electronic signature via ETSI standards and validates the registration.

For teams handling many company creations, integrating electronic signature into an automated workflow — via API — allows triggering the signature sending as soon as the bylaws are validated in the business software. This approach is detailed in our comprehensive guide to electronic signature in business.

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Frequent errors to avoid when electronically signing bylaws

Using a non-compliant solution

Not all electronic signature solutions are equal. A simple text field or a paraph image inserted into a PDF does not constitute an electronic signature in the legal sense. To be enforceable, the signature must be produced by a registered or standards-compliant trust service provider (TSP). In case of dispute, a non-compliant signature will be rejected by the judge, which could lead to the nullity of the act.

It is therefore essential to choose a certified solution, such as those compared in our electronic signature solutions comparison.

Not preserving audit evidence

The audit trail generated during signature must be retained for the entire life of the company, and at least for the five-year prescription period applicable to civil acts (Article 2224 of the Civil Code). Certyneo automatically archives signed documents and their evidence for 10 years, in accordance with GDPR requirements and CNIL recommendations.

Confusing SARL and EIRL in terms of formalities

Although the EIRL (Entrepreneur with Limited Liability) was abolished for new creations since the law of 14 February 2022 — replaced by the single status of the self-employed — some practitioners still manage existing EIRLs. The formalities for amending or closing an EIRL do not follow the same rules as those for a SARL. For these situations, refer to the electronic signature glossary and, if necessary, seek specialised legal advice.

Legal framework applicable to electronic signature of company bylaws

Fundamental European texts

The Regulation (EU) No. 910/2014 of the European Parliament and of the Council of 23 July 2014, known as the eIDAS Regulation, forms the regulatory foundation for electronic signature in Europe. It establishes the three signature levels (simple, advanced, qualified), defines qualified trust service providers (QTSP) and creates national trust lists supervised by control authorities — ANSSI in France. eIDAS 2.0, progressively deployed since 2024, strengthens interoperability requirements and introduces the European digital identity wallet (EUDI Wallet).

The GDPR No. 2016/679 applies to the processing of personal data of signatories (name, email address, telephone number, biometric data if any). Electronic signature providers must be able to produce a register of processing activities, appoint a DPO if necessary, and guarantee the rights of individuals (access, rectification, deletion).

National law

Article 1366 of the Civil Code establishes the principle of equivalence between electronic writing and paper writing: "Electronic writing has the same probative force as writing on a paper medium, provided that the person from whom it emanates can be duly identified and that it is established and preserved under conditions such as to guarantee its integrity."

Article 1367 of the Civil Code defines electronic signature as "the use of a reliable identification process guaranteeing its link to the act to which it is attached" and creates a presumption of reliability for qualified signatures.

Ordinance No. 2021-1192 of 15 September 2021 strengthened the coherence between Civil Code provisions and the eIDAS Regulation, particularly on the notion of electronic public deed and act under private electronic signature.

Decree No. 2017-1416 of 28 September 2017 specifies the reliability conditions for electronic signature procedures for acts under private signature, notably requiring the use of certificates compliant with ETSI EN 319 132 standards (XAdES) or ETSI EN 319 122 (CAdES) or ETSI EN 319 142 (PAdES).

Practical obligations and risks

A non-compliant electronic signature exposes founders to the risk of nullity of the constituent act, which may result in rejection of registration by the registry or, later, challenge by a member or creditor. In tax matters, the administration may also question the date of an act whose signature is not validly established. It is therefore imperative to choose a provider whose eIDAS compliance is documented and audited, and to retain all audit evidence for at least the applicable prescription period.

Usage scenarios: electronic signature of SARL bylaws in practice

Scenario 1 — An accounting firm managing creations in series

An accounting firm with about ten employees assists on average 80 to 120 company creations per year, with the majority being SARLs. Before dematerialisation, each file required printing, handwritten signature and digitalisation of the bylaws, then postal sending or physical delivery to each member. The average time between finalisation of the bylaws and receipt of documents signed by all members reached 7 to 12 working days.

Since integrating an advanced electronic signature solution connected to their management software, this time has fallen to less than 48 hours in more than 85% of files. Members sign from their smartphone, regardless of their place of residence. The audit trail is automatically archived in the client file. The firm estimates a saving of 3 to 4 hours of administrative work per file, representing a total gain of 240 to 480 hours annually reallocated to added-value advice.

Scenario 2 — Founding members geographically dispersed

Three entrepreneurs wish to incorporate a SARL to develop a consulting activity. One is based in the Paris region, the second in Bordeaux, the third works from Lisbon in the context of digital nomadism. Without electronic signature, coordinating the signing of bylaws would have required either a joint meeting or successive registered mail exchanges with unavoidable delays of 10 to 15 days.

Thanks to an advanced electronic signature platform, the three members simultaneously receive a signature link by email. Each identifies themselves via an SMS OTP, views and signs the document in less than 5 minutes. The total time for collecting the three signatures is less than 2 hours. The complete file is filed on INPI's single window the same day, and registration takes place within 5 working days.

Scenario 3 — A business creation support structure

A public structure supporting business creation (incubator or accelerator) annually assists between 50 and 80 project promoters in incorporating their first company. It offers an all-in-one service including bylaws drafting via a customisable generator and collection of electronic signatures from founding members.

Integration of an electronic signature API into its support platform allows automatically triggering the signature circuit when bylaws are validated by an adviser. Rejection rates at the registry for formal reasons (missing signatures, illegible documents) fell from 18% to less than 3% after complete dematerialisation of the process. The average duration of creation support was reduced from 22 to 14 days, significantly improving the satisfaction of supported entrepreneurs.

Conclusion

Electronic signature of SARL bylaws is today a legally sound, technically accessible and economically advantageous practice. The European (eIDAS) and national (Civil Code, Ordinance 2021-1192) regulatory framework provides robust legal certainty as long as the solution used respects Advanced Electronic Signature standards. The time savings — measured at 40-60% of the overall administrative process — and the elimination of geographic constraints make dematerialisation a major lever for founders, accountants and legal advisers.

The key takeaway: choose an eIDAS-compliant provider, use the correct signature level (AES as a general rule), preserve audit evidence and account for the specificities of SARLs with notarial contributions.

Certyneo supports you at every stage, from bylaws generation to their signature and archiving. Create your free account and simplify your SARL creations today.