The legal obligations of B2B companies are not limited to general terms and conditions of sale. Between the contractual framework, billing rules, GDPR compliance, and the reform of electronic invoicing, several regulations overlap and create distinct areas of risk. This article measures the gap between what most companies prioritize and what they neglect.
Frequently Addressed B2B Obligations and Often Neglected Obligations
Competitors widely cover the general terms and conditions (GTC) and contractual clauses. In contrast, other regulatory aspects receive less attention even though they expose companies to comparable sanctions.
| Obligation | Coverage by Companies | Risk of Non-Compliance |
|---|---|---|
| GTC between professionals (art. L.441-1 Code of Commerce) | Widely addressed | Administrative fine, contractual disputes |
| Mandatory invoicing mentions | Generally respected | Fine per non-compliant invoice |
| Payment deadlines between professionals | Known but often exceeded | DGCCRF fines, late penalties |
| Electronic invoicing (reform in progress) | Poorly anticipated | Non-compliance with the compliance schedule |
| GDPR compliance in B2B prospecting | Rarely documented | CNIL sanctions, individual complaints |
| GDPR clauses in subcontracting contracts | Often absent or generic | Joint liability in case of violation |
This table highlights an imbalance: companies invest in drafting their GTC while neglecting obligations that fall under the same compliance requirement. To delve deeper into legal aspects on Manager B2B, several of these topics are addressed complementarily.

B2B Electronic Invoicing: Three Distinct Roles to Anticipate
The reform of electronic invoicing is not just about replacing a PDF with a digital file. It requires distinguishing three functions: receipt, issuance, and transmission of transaction data. Each company must identify its role according to its compliance schedule.
In practice, companies will need to go through an approved platform or a system compatible with the public invoicing portal. The effective date varies depending on the size of the company, meaning that a supplier and its client may not be subject to the same deadlines.
What This Changes in Contracts
B2B service and sales contracts must include clauses specifying the accepted exchange format, the platform used, and the methods of transmitting transaction data. A B2B contract drafted without an electronic invoicing clause exposes both parties to operational blockages as soon as the obligation comes into effect.
A common mistake is to treat electronic invoicing as a purely accounting issue. It is a contractual matter: the choice of platform, responsibility in the event of a technical rejection of an invoice, and validation deadlines must be included in the specific conditions or GTC.
GDPR Compliance in B2B Prospecting: Beyond Consent
Prospecting between professionals benefits from a distinct regime from B2C prospecting: prior consent is not always required for sending commercial emails. This flexibility masks structuring obligations that the majority of companies do not document.
- Documented legal basis: the company must identify and record the legal basis used (legitimate interest in most B2B cases), not just invoke it verbally.
- Information of individuals: each first contact must specify the identity of the data controller, the purpose of the processing, and the right to object.
- Simple objection mechanism: a functional unsubscribe link is not enough. The objection must be taken into account within a reasonable time and tracked in the system.
- Retention period: prospecting files cannot be kept indefinitely. A purging policy must be defined and applied.
The absence of documentation on these points does not lead to immediate sanctions in most cases. However, during a CNIL audit or an individual complaint, the absence of a processing register constitutes a standalone breach, independent of any data breach.
Subcontracting Clauses and Data Responsibility
For SaaS services, outsourced IT services, or any service involving access to client data, the B2B contract must specify the respective GDPR roles. Is the provider a subcontractor in the sense of the regulation, or jointly responsible for processing?
Clauses to Include in a B2B Service Contract
The contract must cover the security measures applied to the data, the notification procedure in case of a breach, and the conditions for returning or deleting data at the end of the contract. A SaaS contract without a breach notification clause is legally incomplete.
The distinction between subcontractor and joint controller is not theoretical. It determines who bears responsibility in the event of a data leak and who must notify the CNIL. A vague contract on this point exposes the client to having to assume a responsibility that should have been contractually transferred.

B2B legal obligations form a set where each aspect refers to the others: GTC frame the commercial relationship, electronic invoicing modifies document flows, GDPR structures the management of prospecting and subcontracting data. The weak link remains documentation: most companies comply with these rules informally without being able to prove it in case of audit or dispute.



