A couple signs a preliminary agreement for an old apartment requiring renovation. The seller imposes a deadline of 45 days to fulfill the financing condition. The file needs to be completed quickly, but the rise in interest rates in 2026 complicates the calculation of the debt ratio.
This increasingly common scenario illustrates a reality: obtaining a mortgage suited to one’s project does not happen when stepping into the bank, but well in advance, during the preparation of the file and the choice of financing strategy.
Debt ratio and usury rate: the trap that blocks files in 2026
The framework set by the High Council for Financial Stability (HCSF) remains the first filter. The debt ratio is capped at 35% including insurance, and the standard duration does not exceed 25 years. These rules have not changed, but their impact has evolved.
The Bank of France observes a gradual increase in the average rate of new housing loans since the end of 2025. Concretely, for the same monthly payment, borrowers can borrow less than a year ago. And when the nominal rate rises, the APR (which includes borrower insurance, guarantee fees, and processing fees) dangerously approaches the usury rate.
It is often the borrower insurance that pushes a file above the threshold. A borrower over 45 years old or presenting a health risk may see their APR exceed the legal limit, even if their income is sufficient. Borrower insurance becomes the real bottleneck in this configuration.
This lever can be acted upon by utilizing the insurance delegation (Lemoine law), which allows choosing a less expensive external contract with equivalent guarantees, thus bringing the APR below the ceiling.
To better understand the possible arrangements according to your situation, you can discover Accia Immobilier’s credit solutions even before submitting a file to the bank.
Preparing a mortgage application: what really matters
Banks analyze a file on three axes, and one of them is often underestimated.
- Income stability: a permanent contract outside the trial period remains the standard, but self-employed individuals with three stable financial statements can also qualify, provided they present consistent net income over time.
- The remaining income after monthly payments: beyond the debt ratio, the bank checks that there is enough left to cover current expenses. A household with high income but significant fixed expenses (alimony, car loan) may be refused despite a correct debt ratio.
- Account management over the last three to six months: repeated overdrafts, rejected direct debits, or online gambling appearing on statements can lead to a refusal, even with a good salary.
The often neglected point is this last criterion. One prepares their pay slips, calculates their contribution, but forgets to stabilize their bank accounts several months before the application.
Personal contribution: what level to aim for
Banks generally require enough to cover additional costs (notary fees, guarantees). For an old purchase, this represents a significant portion of the price. Some institutions still finance without a contribution, but feedback on this point varies by region and borrower profile.
A higher contribution primarily allows for negotiating a better nominal rate, which has a direct effect on the total cost of the loan over 20 or 25 years.
HCSF derogation margin: an unknown lever for first-time buyers
Banks have a margin of flexibility on HCSF criteria. A portion of their production can deviate from the 35% debt ratio ceiling or the 25-year limit, with priority given to primary residences and first-time buyers.
In practice, this means that a file slightly above the 35% threshold can be accepted if the project concerns a first acquisition of a primary residence. This derogation quota is not unlimited: each bank manages its own envelope, and at the end of the quarter, the derogation margins are often exhausted.
The timing of the file submission matters. Submitting at the beginning of the quarter increases the chances of benefiting from this flexibility. This is a parameter that brokers are well aware of and incorporate into their presentation strategy to banks.
Broker or direct negotiation: decide based on the project
Going through a mortgage broker is not always the best option. For a simple file (permanent contract, solid contribution, classic purchase), negotiating directly with one’s main bank may suffice, especially if one already holds savings or a securities account there.
The broker makes the most sense in three specific cases:
- When the debt ratio is close to the ceiling and one needs to find the bank that will accept an HCSF derogation.
- When purchasing in a geographical area far from one’s current residence, and there is no local banking relationship.
- When the profile is atypical (self-employed, variable income, buyout of equity after divorce), as the broker knows how to direct to banks suited to these profiles.
Broker fees vary, and some brokers are compensated solely through the commission paid by the bank. Check this point from the first meeting to avoid surprises at the signing.
Obtaining time: anticipate bottlenecks
The French Banking Federation reports a decline in monthly credit production in July 2026. When volumes decrease, the analysis teams in banks do not proportionally reduce, but delays can lengthen on complex files. Count on a realistic timeframe between the complete submission of the file and the issuance of the loan offer, and adjust your preliminary agreement accordingly.
Mortgage lending in 2026 is negotiated on tighter margins than in 2024. The rise in rates, the maintenance of HCSF rules, and the growing role of insurance in the calculation of the APR create an environment where the preparation of the file makes the difference between a quick agreement and an avoidable refusal. Stabilizing accounts, calibrating contributions, and choosing the right time to submit remain the three most concrete levers to secure financing.
