A couple signs a compromise for a house that requires extensive renovation. The bank offers a standard amortizable loan over 20 years. The broker suggests combining a PTZ, a main loan over 25 years, and a deferral for the renovation work. The result: the monthly payment decreases by several hundred euros, and the project falls below the 35% debt threshold. Everything hinges on the assembly of the mortgage loans, not on the choice of a single product.
Amortization Deferral and Mortgage Loan Duration: The Underused Leverage
We often talk about negotiating the rate, but rarely about playing with the repayment structure. The amortization deferral allows for only paying the interest (or even nothing at all in total deferral) for a defined period, usually the duration of a construction project or delivery in VEFA.
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This mechanism has a direct effect on the total duration of the loan. Since the recommendations of the HCSF, the maximum duration of a mortgage loan is set at 25 years, but it can be extended to 27 years when a deferral applies, provided that the renovation work represents at least 10% of the total project cost or that the purchase concerns new property.
In practical terms, these two additional years reduce the monthly payment and increase borrowing capacity. For a project involving energy renovation or construction, this is a lever to be integrated right from the financing plan setup. Among the loans offered by Puissance Patrimoine, there are several formulas that allow for this type of structuring with tailored support.
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Usury Rate in 2026: Understanding the Caps to Avoid Blocking
The usury rate sets the maximum legal cost of a loan. Many borrowers discover this constraint when their application is rejected, even though it conditions the entire feasibility of the financing.
As of April 1, 2026, the caps are as follows:
| Type of Loan | Usury Rate |
|---|---|
| Fixed rate, less than 10 years | 4% |
| Fixed rate, 10 to less than 20 years | 4.48% |
| Fixed rate, 20 years and more | 5.19% |
| Variable rate | 5% |
| Bridge loan | 6.2% |
The APR (annual percentage rate) includes the nominal rate, borrower insurance, processing fees, and guarantees. It is the APR, not the nominal rate, that is compared to the usury threshold. An attractive bank rate can therefore be neutralized by overly expensive insurance or high guarantee fees.
Getting Below the Usury Threshold Without Changing Banks
Three concrete actions can lower the APR without renegotiating the nominal rate:
- Take out borrower insurance through an external delegation, often cheaper than the bank’s group contract. The Lemoine law allows for changes at any time, without fees or penalties.
- Reduce the loan duration if the monthly payment allows it: a loan over 15 years instead of 20 years moves into a lower usury bracket.
- Negotiate the elimination or reduction of processing fees, which are included in the APR calculation.
These adjustments may seem minor, but on a file close to the threshold, they make the difference between approval and rejection.
Multiline Credit: Combining Multiple Mortgage Loans to Optimize Total Cost
The multiline structure involves breaking down the financing into several loans of different durations and rates, repaid in parallel. The short loan (over 10 or 15 years) is repaid first, then the released monthly payment is absorbed by the long loan (20 or 25 years).
The total interest cost decreases significantly compared to a single long-term loan. The overall monthly payment remains smooth throughout the repayment period, which complies with the HCSF constraint of a 35% debt ratio.
Who is the Multiline Structure For?
This type of structure mainly benefits the following profiles: first-time buyers who combine a PTZ (zero-interest loan) with a main loan, rental investors who integrate a bullet loan backed by a life insurance policy, or buyers of new properties who combine deferral and amortizable loans.
Feedback varies on this point, but a specialized broker often facilitates the arbitration between the lines. Banks do not always spontaneously offer this option, as it complicates the processing of the file.
Borrower Insurance: The Expense Item to Prioritize
Over the total duration of a loan, borrower insurance can represent a comparable share to bank interest. This item is often underestimated because it is included in the overall monthly payment.
Comparing insurance offers before signing the loan reduces the total cost of financing. The insurance delegation allows for choosing an external contract, with equivalent guarantees, for a price sometimes halved compared to the group contract.
Points of Caution Regarding Guarantees
Not all insurances cover the same risks. For a primary residence purchase, banks usually require death, PTIA (total and irreversible loss of autonomy), and ITT (temporary incapacity to work) guarantees. For rental investments, the requirements are often relaxed.
- Check the insured share: 100% per person for a sole borrower, to be strategically allocated for a couple (50/50, 70/30, or 100/100 depending on income).
- Read the exclusions: high-risk sports, pre-existing conditions, waiting periods.
- Compare based on the total cost in euros, not just on the displayed insurance rate.
A good mortgage structure does not rely on a single lever, but on the articulation of several. The deferral, multiline breakdown, choice of insurance, and adherence to usury thresholds form a coherent whole. Each neglected item increases the final cost or, worse, blocks the file even before the loan offer.