In the field of lending, acceleration of maturity clauses — allowing a bank to demand immediate repayment of an entire loan upon default — are a constant source of litigation. While case law is protective of consumers, what about professionals?
A recent ruling by the Cour d’appel de Paris provides essential clarifications on the application of article 1171 of the Civil Code to professional loan agreements.
Cour d’appel de Paris, pole 1 ch. 8, 19 decembre 2025, n° 25/03820, SAS Holding Hoa Nghia c/ SA Caisse d’Epargne et de Prevoyance Ile-de-France
The Background: A Payment Default and Early Acceleration
In this case, the Caisse d’Epargne et de Prevoyance d’Ile-de-France had granted two loans to the company Holding Hoa Nghia: a loan of 510,000 euros for the acquisition of company shares and a loan of 50,000 euros for a business vehicle. Following unpaid instalments from October 2023 onwards, the bank formally demanded that the company regularise its situation within 15 days, failing which the account would be closed and maturity accelerated.
The borrower challenged the validity of the acceleration clause, deeming it unfair due to the brevity of the 15-day period.
Is the 15-Day Clause Unfair for a Professional?
The key legal issue was the application of article 1171 of the Civil Code, which provides that:
“in an adhesion contract, any non-negotiable clause, predetermined by one of the parties, that creates a significant imbalance between the rights and obligations of the parties to the contract shall be deemed unwritten”.
The company Holding Hoa Nghia argued that the 15-day period created such an imbalance. However, the Court of Appeal rejected this argument. While acknowledging that loan agreements are adhesion contracts, it stated:
“The company Holding Hoa Nghia, having acted in its capacity as a professional, does not establish that the clause providing for acceleration of maturity within 15 days of the formal demand creates a significant imbalance, the period granted to regularise its situation being reasonable.”
Thus, while the Cour de cassation has previously held that a 15-day period was insufficient for a residential mortgage loan to individuals, the judges here consider that this period is perfectly suited to the business world.
The Consequences of Irregular Implementation by the Bank
While the clause is valid in itself, its implementation must be rigorous. In this case, the bank failed to prove that it had complied with its own contractual terms.
The Court identified major irregularities in the sending of the formal demands:
- For the first loan, the postal stamp indicated a dispatch date well after the deadline set in the letter.
- For the second loan, the formal demand left the company only 7 actual days to regularise its situation instead of the contractually stipulated 15 days.
The Court thus concluded:
“It follows that the acceleration of maturity clauses do not appear to have been implemented in a regular manner, such that the credit institution’s claims in this regard face a serious challenge.”
Conclusion of the Ruling
The Court therefore reversed the summary judgment order regarding the total amount of provisional payments. The company is not ordered to repay the entire outstanding capital (acceleration of maturity suspended), but it remains liable for the unpaid instalments (arrears) accumulated since October 2023.
Key Takeaways:
- Validity of the Clause: A 15-day period before acceleration of maturity is considered reasonable in a contract between professionals.
- Procedural Rigour: The bank must imperatively prove that the actual dispatch of the letter affords the debtor the full contractually stipulated period, failing which the early acceleration of the loan may be annulled in summary proceedings.

