Acceleration Without a Reasonable Period: The Bank Clause Held Unfair and Unwritten (CA Saint-Denis de la Réunion, 27 February 2026, No. 23/00989)

Saint-Denis de la Réunion Court of Appeal (cour d’appel), civil chamber (former TGI chamber), 27 February 2026, No. 23/00989

The Facts: A Home Loan, Missed Payments and a Disputed Acceleration

In December 2009, Ms Q. took out with CASDEN Banque Populaire a home loan of €210,000, intended to finance the purchase of a property. The loan was to be repaid in 300 monthly instalments of €1,179.61 at a rate of 4.19%, with a first repayment due in January 2010.

For several years, the borrower met her instalments without particular difficulty. From 2020, however, her personal and financial situation deteriorated sharply: a contentious divorce, the death of her father, caring for her elderly and dependent mother, and substantial school fees for her daughter, who was pursuing medical studies. These events weakened her ability to repay and several instalments went unpaid.

Aware of her difficulties, Ms Q. tried to find amicable solutions with her bank. In 2017, a first “catch-up plan” had been put in place, allowing €2,359.22 of arrears to be cleared in three monthly instalments of €810. Then, in February 2021, a new “amendment to the loan agreement” was signed to clear €3,581.83 of unpaid sums in eight instalments of €455.63. That amendment expressly stipulated that, failing payment of even a single instalment on time, the bank could declare acceleration and make all the sums due immediately payable.

Despite this attempt at regularisation, the difficulties persisted. On 9 April 2021, CASDEN sent Ms Q. a formal notice by registered letter with acknowledgment of receipt (notice left, but the letter not collected), claiming the sum of €5,257.38 and setting a payment deadline of 23 April 2021, a period of less than 15 days. The letter stated that, failing payment, acceleration would be declared and would entail the immediate payment of the outstanding principal and exclusion from the insurance contract.

On 16 June 2021, the bank notified Ms Q. that acceleration had been declared on 14 June 2021, making a total sum of €168,871.70 due. No document formally set out the acceleration decision or the breakdown of the sums due.

Faced with this situation, CASDEN summoned Ms Q. before the Court of First Instance (tribunal judiciaire) of Saint-Denis de la Réunion in November 2021 to obtain payment of that sum. The court rejected the argument based on the irregularity of the declaration of acceleration and ordered the borrower to pay €159,324.04, while of its own motion reducing the contractual penalty clause (clause pénale) from 7% to €1,500. Ms Q. appealed that judgment in July 2023.

The Acceleration Clause Held to Be Unfair

The Principle: Protection Against Contractual Imbalance

Consumer law offers borrowers particular protection against unbalanced contractual terms. Article L. 212-1 of the Consumer Code (code de la consommation) defines unfair terms as those “which have as their object or effect to create, to the detriment of the consumer, a significant imbalance between the rights and obligations of the parties to the contract”.

This protection is not theoretical: it applies in practice to all terms which, in their drafting or their application, place the borrower in a position of clear inferiority to the bank. Whether a term is unfair is assessed at the time the contract is concluded, taking into account all the circumstances surrounding it as well as all the other terms.

When a term is held to be unfair, it is deemed “unwritten” (non écrite), that is, it is treated as never having existed. The contract then continues without that term, and the bank cannot rely on it to justify its actions.

In the field of home loans, the acceleration clause, which allows the bank to make the entire outstanding principal immediately due in the event of the borrower’s default, receives particular attention from the courts. This clause can indeed have dramatic consequences for the borrower: overnight, the borrower no longer owes a few hundred or a few thousand euros of unpaid instalments, but the whole loan, sometimes several tens or hundreds of thousands of euros.

The Contribution of European and French Case Law

European and French case law has gradually established a strict framework for acceleration clauses. Two judgments of the Court of Justice of the European Union (CJEU) have played a fundamental role in this development.

In a judgment of 26 January 2017 (Case C-421/14), the CJEU set out several criteria for assessing whether an acceleration clause is unfair. In particular, it indicated that the national court must examine:

• Whether the professional’s option to declare the whole loan due depends on the consumer’s failure to perform an obligation that is essential in the contractual relationship;
• Whether that option is provided for in cases where such a failure is sufficiently serious in light of the term and the amount of the loan;
• Whether that option departs from the ordinary rules of law applicable in the absence of specific contractual provisions;
• Whether national law provides adequate and effective means enabling the consumer to remedy the effects of the loan becoming due.

Then, in a judgment of 8 December 2022 (Case C-600/21), the CJEU clarified that these criteria are neither cumulative nor alternative, but must be understood as forming part of all the circumstances that the national court must examine in order to assess whether a contractual term is unfair.

In France, the French Supreme Court (Cour de cassation) quickly integrated this European case law. In several recent judgments, it has held that a term is unfair where it provides for the automatic termination of the loan contract after a formal notice to pay one or more unpaid instalments, without notice of a reasonable length, because it creates a significant imbalance between the rights and obligations of the parties to the detriment of the consumer, who is exposed to a sudden worsening of the repayment terms.

Notable decisions include:

• Cass. Civ. 1st, 22 March 2023, No. 21-16.044: reaffirmation of the principle that the absence of notice of a reasonable length establishes the significant imbalance;
• Cass. Civ. 1st, 29 May 2024, No. 23-12.904: confirmation of this case law;
• Cass. Civ. 2nd, 3 October 2024, No. 21-25.823: clarification that where the judge holds that the immediate-payment clause stipulated in the loan contract is an unfair term deemed unwritten, acceleration cannot rest on that clause, whatever the formal notice sent by the bank.

Application to the Case: A Vague Clause Without Safeguards

In the case decided by the Saint-Denis de la Réunion Court of Appeal, the acceleration clause in Article 7-3 of the loan contract signed in 2009 had several major defects which led the court to declare it unfair.

First, the clause itself provided for no precise period between the finding of the borrower’s default and the declaration of acceleration. It merely stipulated that “in the event of default by the borrower and if the bank demands immediate repayment of the outstanding principal”, certain consequences would follow (late-payment interest, a 7% indemnity on the outstanding principal). But it defined neither what was meant by “default”, nor the practical arrangements for implementing acceleration, nor the period the borrower would have to regularise their situation.

Second, in its concrete application, the bank gave Ms Q. an extremely short period in which to react. The formal notice of 9 April 2021 gave her until 23 April 2021 to pay €5,257.38, a period of less than 15 days. Yet the case law considers such a period unreasonable, especially for a person in financial difficulty who may need time to find solutions (negotiating with the bank, looking for financing, reorganising the budget).

Third, acceleration was declared without the borrower being clearly informed of it. The letter of 16 June 2021 states that acceleration was declared “on 14/06/2021”, but no document records that formal decision, sets out its detailed reasons or indicates precisely the amount of the sums that had become due. The borrower was thus left in a situation of total legal uncertainty: she did not know precisely what she owed, on what legal and contractual basis, or what avenues of recourse were open to her.

Fourth, CASDEN provided no means for the borrower to remedy the effects of acceleration once it had been declared. Unlike certain contracts that allow acceleration to be “purged” by quickly regularising the arrears, nothing of the kind existed here. Once acceleration had been declared, the borrower faced an immediately payable debt of more than €168,000, with no way out other than court proceedings.

The Court of Appeal found that these elements taken together created a significant imbalance between the rights and obligations of the parties to the detriment of the borrower, who was exposed to a sudden worsening of the repayment terms. It therefore declared the acceleration clause in Article 7-3 of the contract unfair and deemed it unwritten.

This solution follows squarely in the line of the case law of the French Supreme Court and the CJEU. It is a reminder that banks’ contractual freedom is not absolute: they must respect consumers’ rights and cannot impose on them terms that place them in a situation of unjustified legal or financial uncertainty.

The Consequences of Voiding the Unfair Term

Judicial Termination of the Loan Ordered in the Alternative

Once the acceleration clause had been declared unfair and deemed unwritten, the question was what fate should be reserved for the loan contract. The borrower had indeed stopped paying her instalments several months earlier, and arrears persisted. The bank could no longer invoke the unfair term to make the loan immediately due, but it retained the right to seek termination of the contract for non-performance of contractual obligations.

This is where Article 1184 of the Civil Code (code civil) comes in (in the version applicable to the dispute, before the 2016 reform), which provides that in synallagmatic contracts (that is, those in which each party has reciprocal obligations), a resolutory condition is always implied in case one of the parties fails to fulfil its undertaking. The injured party may then ask the court either for specific performance of the contract or for its termination with damages.

Article L. 312-22 of the Consumer Code (in the wording applicable) sets out the consequences of the borrower’s default where the lender seeks termination of the contract: the lender may demand immediate repayment of the outstanding principal as well as payment of accrued interest. The sums remaining due bear late-payment interest at the loan rate until the date of actual payment. The lender may also claim an indemnity, the amount of which cannot exceed a scale set by decree according to the remaining term of the contract.

In this case, CASDEN had made an alternative claim for judicial termination of the loan contract, together with an order that the borrower pay the sums due. In the further alternative, it sought at least an order for payment of the unpaid instalments.

Ms Q., for her part, did not dispute the reality of the arrears and produced no evidence showing that she had resumed paying instalments since June 2021. The Court of Appeal therefore found that the borrower’s non-performance of her contractual obligations justified termination of the loan.

Accordingly, the court ordered termination of the home loan contract as from the date of its decision, and ordered Ms Q. to pay CASDEN the sum of €44,440.33, corresponding to the unpaid instalments up to 30 December 2023. This sum was made up as follows:

• €6,692.81 of instalments due on the day acceleration was declared (May 2021);
• €37,747.52 of instalments due for the period from 30 May 2021 to 30 December 2023, that is 32 monthly instalments of €1,179.61.

To this sum were added interest at the contractual rate of 4.19% from 19 November 2021.

The court thus granted CASDEN’s further-alternative claim, but wholly set aside the principal claim based on acceleration (€168,871.70) and the alternative claim for termination with an order to pay the entire outstanding principal (the same amount). It limited the award to the unpaid instalments alone, which is much more favourable to the borrower.

Grant of Payment Periods: A Measure of Fairness

Ordering a debtor to pay a large sum does not necessarily mean that the debtor must pay it immediately. Article 1343-5 of the Civil Code allows the judge, taking into account the debtor’s situation and having regard to the creditor’s needs, to defer or spread the payment of the sums due over a period of up to two years.

This power offers a breath of fresh air to debtors acting in good faith who, although in temporary difficulty, have sufficient income to pay off their debt gradually. It avoids situations of sudden insolvency and preserves as far as possible the balance between the interests of the creditor (who will be paid) and those of the debtor (who will not be crushed by an immediately payable debt).

In this case, Ms Q. had applied from the first instance for a 24-month payment period. The court had rejected that request. On appeal, she repeated her request, explaining that her financial situation had improved: a civil service teacher, she received a stable monthly salary of €4,200 (varying with overtime), as well as maintenance of €382 for her adult daughter. Her monthly outgoings amounted to €2,622 (CASDEN home loan, another home loan, a consumer loan), leaving her with €1,578 a month of disposable income.

She put forward several points in her favour:

• Her good faith: for many years, she scrupulously met the loan instalments. It was only from 2020 that she encountered difficulties because of serious personal events (divorce, bereavement, caring for her elderly mother, her daughter’s school fees);
• Her willingness to find amicable solutions: she systematically informed the bank of her difficulties and tried to negotiate catch-up or repayment plans;
• The improvement in her situation: her daughter having finished her studies and now working on a work-study basis, she no longer had to bear the high school fees that had weighed on her budget;
• The stability of her income: as a civil servant, she had a regular and permanent salary, a guarantee of future solvency.

The Court of Appeal was receptive to these arguments. It granted Ms Q. a payment period spread over 23 monthly instalments of €800 each, the last instalment corresponding to the balance of principal, interest and costs of the debt. The first instalment was to be paid before the 10th of the month following service of the judgment, and the following ones before the 10th of each month.

The court also recalled the protective effects of Article 1343-5 of the Civil Code: for the duration of the rescheduling, enforcement proceedings commenced by the creditor are suspended, and increases in interest or penalties provided for in case of delay cease to be due. However, if even a single instalment is not paid when due, the entire claim becomes immediately payable again and the suspended late-payment interest resumes running.

This decision illustrates the judge’s desire to balance the interests involved. On the one hand, the bank gets satisfaction: the loan is terminated, and it will be paid its unpaid instalments. On the other, the borrower benefits from a stay of enforcement that allows her to spread her debt over almost two years, which matches her real repayment capacity.

Practical Lessons from This Decision

The judgment delivered by the Saint-Denis de la Réunion Court of Appeal on 27 February 2026 offers several essential lessons for both borrowers and credit institutions.

For borrowers in difficulty:

This judgment confirms that acceleration cannot be declared arbitrarily or brutally by the bank. If your bank notifies you of acceleration without having allowed you a reasonable period to regularise your situation, or if the contractual clause providing for acceleration is vague, imprecise or unbalanced, you are entitled to challenge it in court.

It is essential to react quickly as soon as you receive a formal notice or a notification of acceleration. Do not stay isolated: contact a lawyer specialising in banking law who can analyse your contract, identify any unfair terms and advise you on the strategy to adopt. Even if you are indeed behind on your payments, that does not mean the bank has every right.

In addition, do not hesitate to ask the judge for payment periods if you have a stable income and your financial situation has improved or is improving. Judges are generally sympathetic to debtors acting in good faith who show their willingness to regularise their situation and their real ability to repay gradually.

For banks and credit institutions:

This decision is a reminder that acceleration clauses must be drafted with care and applied with caution. A clause that does not provide for a reasonable period between the formal notice and the declaration of acceleration, or that does not clearly specify how it is to be implemented, risks being held unfair and therefore unenforceable against the consumer.

Banks must also take care to formalise their decisions rigorously: a notification of acceleration must be clear, precise and reasoned, and must state exactly the amount of the sums that have become due as well as the avenues of recourse open to the borrower. A vague letter simply stating that acceleration was declared “on 14/06/2021” without further detail is not enough.

Finally, credit institutions have every interest in favouring amicable solutions before commencing legal proceedings. Putting in place catch-up or repayment plans, as was attempted in this case, is a positive step that shows a willingness to find a satisfactory outcome for both parties. However, such plans must be realistic and take account of the borrower’s real repayment capacity.

In general legal terms:

This decision forms part of a trend in the case law towards strengthening consumer protection against unbalanced terms in credit contracts. It illustrates the influence of European law on French consumer law: the criteria set out by the CJEU are now fully integrated into the reasoning of the French courts.

It also shows that the judge has wide discretion to characterise a term as unfair. This power is not arbitrary: it is exercised in light of all the circumstances of the case, the drafting of the term, its concrete application and its effects on the contractual balance. The judge examines the term “in context”, and not only in the abstract.

Finally, this case is a reminder that the sanction for an unfair term (its outright removal from the contract) does not necessarily entail the annulment of the whole contract or the total discharge of the debtor. The contract remains, but stripped of its unfair term, and the judge may order termination of the contract for non-performance of contractual obligations if the conditions are met. However, the financial consequences for the debtor are then much lighter than if the unfair term had been applied.

Conclusion

The judgment delivered by the Saint-Denis de la Réunion Court of Appeal on 27 February 2026 is an exemplary decision on the protection of borrowers against unfair acceleration clauses. By declaring the disputed clause unwritten and setting aside the acceleration declared by CASDEN, the court firmly restated that banks cannot unilaterally impose on their customers conditions that create a significant imbalance to their detriment.

This case law is in line with the recent decisions of the French Supreme Court and the Court of Justice of the European Union, which endorse a consumer-protective approach without depriving credit institutions of their legitimate rights. The solution adopted by the Court of Appeal is balanced: the unfair term is set aside, but the contract is terminated and the borrower is ordered to pay the unpaid instalments, albeit with payment periods that take account of her real financial situation.

For people facing acceleration proceedings, this decision offers concrete hope: it is possible to challenge an unfair term effectively, even if one is indeed behind on one’s payments. The key is not to remain passive, to take advice from a legal professional, and to demonstrate one’s good faith and willingness to regularise the situation.

For banks, this judgment is a call to order: the drafting and application of contractual terms must scrupulously meet the legal and case-law requirements of consumer law. Failing that, they risk seeing their terms declared unfair and their claims rejected or greatly reduced.

Ultimately, this case perfectly illustrates the balance that the law seeks to establish between the parties’ contractual freedom and the protection of consumers against abuse. It is a reminder that a loan contract is not an instrument of domination, but a reciprocal undertaking in which each party must respect the rights of the other, in a spirit of fairness and transparency.

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