You find a property, your bank confirms that your income is sufficient, and yet your mortgage application is rejected. This scenario is affecting a growing number of borrowers, particularly those over 40, because a mortgage is about more than the advertised interest rate. The total cost of financing, including insurance and fees, must stay below a legal cap that many people discover too late.
Usury rate and APR: the cap that blocks otherwise creditworthy applications
When a bank calculates your mortgage, it adds together the nominal interest rate, borrower insurance, application fees and guarantee fees. This total is the APR (annual percentage rate). For the loan to be legal, its APR must not exceed the usury rate, which is revised every quarter by the Banque de France.
The problem arises when nominal rates rise quickly. The usury rate, calculated using loans granted in the previous quarter, lags behind. The gap between the nominal rate and the usury rate then narrows sharply, and insurance alone can push the APR over the limit.
In practical terms, a 45-year-old borrower with a comfortable income may be denied financing not because they cannot repay the loan, but because their insurance, which costs more due to their age, pushes the APR above the permitted threshold. They can afford the repayments, but the law says no.
Exploring the options for a mortgage with BTB Immobilier makes it possible to compare loan structures and identify ways to reduce insurance costs or other fees.
Three ways to get back below the usury rate
- Switch borrower insurance: choosing an external policy is permitted and is often cheaper than the one offered by the lending bank. For younger borrowers with no particular health risks, the savings may be enough to bring the APR below the cap.
- Reduce guarantee fees: a mutual guarantee scheme generally costs less than a mortgage. This cost, which is included in the APR, affects the final calculation.
- Adjust the loan term: extending the term lowers monthly payments but increases the total cost. In some cases, shortening the term can lower the APR by reducing the relative cost of insurance. The result of each simulation will vary depending on the borrower’s profile.
Debt-to-income ratio capped at 35%: how the HCSF rules work in practice
Since January 2022, the High Council for Financial Stability (HCSF) has regulated the granting of mortgages. The debt-to-income ratio must not exceed 35%, including borrower insurance, and the loan term is capped at 25 years (27 years for an off-plan purchase or a property requiring major renovations).
These rules protect borrowers from over-indebtedness, but they also limit room for negotiation. A household already using part of its income to repay a car loan or student loan will have its mortgage borrowing capacity reduced accordingly.
HCSF exemptions: flexibility, not an entitlement
Banks have some flexibility over a portion of the mortgages they grant. They can approve loans that exceed the standard criteria, with priority often given to first-time buyers and purchases of primary residences.
This exemption is not automatic. The bank is free to choose which applications it approves under this allowance. A substantial down payment, strong savings remaining after the purchase, or documented salary prospects can improve the chances of qualifying. Discussing the matter directly with a bank adviser or mortgage broker is still the most effective approach.
Borrower insurance: the cost most buyers underestimate
The usual approach is to compare nominal interest rates between banks. Borrower insurance, meanwhile, often takes a back seat. That is a mistake. Over a long-term loan, insurance can account for a significant share of the total cost of borrowing.
Why does this cost vary so much from one borrower to another? Because insurers adjust their rates based on age, health, occupation and sometimes lifestyle. Two borrowers with the same income and the same plans will not necessarily pay the same insurance premium.
The law allows you to choose your borrower insurance freely, including after signing the loan agreement. Comparing several quotes before finalising the loan structure is a direct way to reduce the APR.
Down payment and PTZ: two factors that can change the loan structure
A down payment generally covers at least the notary and estate agency fees. A larger down payment reduces the amount borrowed and improves the bank’s perception of the borrower’s risk profile, which may result in a lower nominal interest rate.
For first-time buyers, the zero-interest loan (PTZ) does more than reduce the cost of borrowing. It changes the structure of the loan itself: the portion financed at zero interest mechanically lowers the overall APR, which can unblock an application that would otherwise be held up by the usury rate.
Combining a PTZ with external borrower insurance
A first-time buyer eligible for a PTZ who also chooses a competitive external insurance policy can reduce two components of the APR at the same time. This double benefit is particularly useful when nominal rates are high and there is little room below the usury rate.
Not all lenders offer the PTZ with the same degree of flexibility. Some incorporate it into a smoothed loan structure (with a single, fixed monthly payment), while others require two repayment phases. Monthly cash-flow comfort depends directly on the loan structure you choose.
The rate advertised in the window tells only part of the story. A mortgage application depends on the overall APR, and every cost (insurance, guarantee fees, loan term) can tip the balance between approval and rejection. Checking the total before signing a preliminary sale agreement can help you avoid discovering a problem after the cooling-off period has ended.
