
A buyer signs a preliminary agreement with a nominal rate of 3.5% in the suspensive clause. Three weeks later, the bank offers 3.65% including insurance. The seller believes the condition is not met, the buyer wants to withdraw, and the notary finds themselves as an arbitrator in a dispute that could have been avoided with clearer drafting.
This scenario, increasingly common since the rate volatility that began in 2022, illustrates why the rate stated in the preliminary sales agreement conditions the continuation of the entire transaction.
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Nominal rate, effort rate, or total cost of credit: which reference to choose in the suspensive clause
There are three ways to express the rate in the financing suspensive condition, and each produces different legal effects.
The fixed nominal rate (for example, “3.5% excluding insurance”) is the most common formulation. Its drawback: it ignores the cost of borrower insurance and guarantees, which can push the actual cost of the loan well above the expected threshold.
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Since mid-2024, several broker networks have noted that banks are more readily accepting applications where the maximum rate is expressed as an effort rate or total cost of credit rather than as a simple nominal rate. This approach protects the buyer when insurance or mortgage guarantees increase the bill.
The third option, more recent in notarial practice, involves formulating the clause by referring to the “average rate practiced by credit institutions for this type of operation on the date of the offer.” This mechanism avoids cancellation for exceeding by a few tenths of a point, while remaining compliant with the practices outlined in the recommendations of Alpha Immobilier on drafting suspensive clauses.

Suspensive clause for real estate loans: drafting errors that block the sale
The preliminary agreement does not merely set a price. The suspensive condition for obtaining a loan is the buyer’s line of defense, and its drafting determines whether they can withdraw without losing their deposit in case of a bank refusal.
Setting a rate too low compared to the market
Some buyers, on the advice of a relative or out of excessive caution, insist on stating a rate much lower than the actual conditions at the time. The risk is twofold.
First, the seller may refuse this clause, considering it offers too easy an exit. Second, if the clause is accepted and the buyer obtains a loan at a higher rate (but one they deem acceptable), they can no longer invoke the suspensive condition to withdraw. Financing exists; it simply does not meet the threshold of the preliminary agreement.
Omitting the duration and amount of the loan
A rate without an associated duration makes no financial sense. A loan over 20 years and a loan over 25 years do not produce the same monthly payments or total cost, even at the same rate. The clause must mention at least:
- The amount of the loan sought, consistent with the sale price and the declared personal contribution
- The maximum duration of the loan, expressed in years or months
- The type of rate (fixed, variable, or both if the buyer wishes to retain that flexibility)
- The maximum acceptable rate, preferably expressed as total cost or effort rate
Forgetting any of these elements exposes both parties. The seller risks seeing the buyer invoke a bank refusal out of convenience. The buyer risks losing their right of withdrawal if the notary considers the clause too vague to be enforceable.
Ignoring the financing search period
The preliminary agreement provides a period during which the buyer must obtain their loan offer. This period, usually set between 45 and 60 days after signing, must be realistic. A timeframe that is too short in a context where banks are extending their processing times can turn a well-drafted clause into a trap for the buyer.
Green real estate credit and conditional clauses: an emerging practice in the preliminary agreement
Since 2024, several banking institutions have been offering rate bonuses linked to energy renovation work, as part of what is called “green real estate credit.” This trend has a direct impact on the drafting of the preliminary agreement.
The concrete problem: a buyer negotiates a bonus rate conditional on work (insulation, heating system change). If the bonus is ultimately not granted, for example because the post-work energy diagnosis does not meet the bank’s criteria, the actual loan rate exceeds the threshold stated in the preliminary agreement. Without an appropriate clause, the buyer finds themselves stuck between financing that is more expensive than expected and the legal impossibility of withdrawing.
Notaries are beginning to integrate into the suspensive condition an explicit mention referring to this type of conditional offer. The wording stipulates that the non-obtainment of the green bonus constitutes a valid reason for non-fulfillment of the suspensive condition, just like a classic loan refusal.

Real estate preliminary agreement and rates: points to check before signing
Before initialing each page, it saves time (and money) to check a few specific points.
- Does the maximum rate stated correspond to the latest simulations obtained from at least two banks or a broker, with a reasonable safety margin upwards?
- Does the clause distinguish the nominal rate from the total cost of credit, to avoid any ambiguity about what includes or excludes insurance?
- Is the loan acquisition timeframe consistent with the processing times observed in the institutions contacted?
- In the case of resorting to green credit or any conditional offer, does the clause explicitly provide for this hypothesis?
A well-drafted preliminary agreement protects both the seller and the buyer. The seller knows that the clause is not an excuse to exit. The buyer knows that a legitimate bank refusal will not cost them their deposit.
Most notaries agree that a discrepancy of a few tenths of a point above the received simulations constitutes a sufficient safety net without undermining the seller’s position. The rate to be included in the preliminary agreement is not an administrative detail; it is a legal lock whose precision determines whether the transaction will be completed or bogged down in a dispute that no one anticipated.