How does a bridge loan work? A real estate hunter's guide

Want to buy before selling your current home. Discover how the bridge loan works, its risks, its calculation and the advice of a real estate hunter.

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1/6/2026

Bridge loan: operation, calculation, risks

When you want to acquire a new home but your current residence hasn't been sold yet, time becomes the buyer's worst enemy. To avoid losing out on the home of their dreams or having to sell their current property at a discount in a hurry, the banking sector offers a dedicated financial solution: the bridge loan.

Often mistakenly perceived as a risky mechanism, the bridge loan is nonetheless a powerful tool for asset transition if precisely calibrated. How exactly does it work? How do banks calculate your borrowing capacity? What strategies can eliminate its risks? MeCaza provides a comprehensive overview.

1. What is a bridge loan? Definition and types

A bridge loan is a short-term credit (generally granted for a period of 12 to 24 months) granted by a bank. It allows you to obtain a cash advance corresponding to a portion of the value of the property you are selling, in order to immediately finance the down payment or purchase price of your future home.

When the sale of your first property is finalized with the notary, the capital received is used to fully and early repay the bridge loan, ending the contract without penalties (IRA).

The bridge loan is subject to the protective rules of conventional mortgage loans, particularly the mandatory 10-day cooling-off period set by the Consumer Code on Service-Public.fr.

There are two main variants on the market:

The "dry" bridge loan

It is used if the value of the property you are selling is greater than or equal to the price of your new purchase (a typical case for a "second-time buyer" who is downsizing or moving to a different region). The bank advances the funds, and you only pay monthly interest and borrower's insurance until the capital is repaid upon sale.

The "combined" or "linked" bridge loan

This type of loan is used when the new property costs more than the old one. The bridge loan is then combined with a classic long-term mortgage (over 15, 20, or 25 years) to complete the financing plan.

2. How does the bank calculate the amount of a bridge loan?

This is a critical technical aspect. A bank will never lend you 100% of the estimated value of your current home. To protect itself against real estate market fluctuations and ensure you can repay the loan even if you have to lower your selling price, it applies a security margin.

The standard calculation method

Generally, the bridge loan amount ranges between 70% and 80% of the estimated market value of your current property.

If your home already has a signed preliminary sales agreement (with the financing contingency clause lifted or well underway), the bank may agree to increase this percentage up to 85% or 90%.

Before granting a bridge loan, the bank applies a security margin to the value of your home. To determine the precise value of your total assets before initiating the transaction, consult our method for evaluating and optimizing your real estate assets.

The exact mathematical formula:

Signe Composante de la formule de calcul Application mathématique
  Valeur estimée du bien actuel Base de départ
× Taux d'avance de la banque (généralement 70% à 80%) = Avance brute
Capital restant dû du crédit en cours Solder la dette actuelle
= Montant du prêt relais net accordé Enveloppe finale disponible

Concrete example:

You own an apartment valued at €300,000. You still have €60,000 left to repay on your initial loan. The bank approves an advance rate of 70%.

Étape du plan de financement Opération comptable Montant résultant
1. Estimation du bien actuel Valeur vénale sur le marché immobilier 300 000€
2. Calcul de l'avance brute Application de la décote de sécurité (70%) 210 000€
3. Déduction du passif en cours Soustraction du capital restant dû à la banque −6000€
4. Prêt relais net accordé Trésorerie nette disponible pour votre nouvel achat 150 000€
5. Solde de l'ancien crédit Montant restant remboursé le jour de la vente finale 6000€

A bridging loan is an excellent transitional tool, but it can be combined with other financial aid from the state. To maximize your overall funding, feel free to combine your financing with the various home purchase assistance programs in effect this year.

3. Repayment options: Full deferral or partial deferral?

During the bridging loan period (while the sale is pending), you must pay the bank for the money advanced. Two options are available to you:

Partial Deferral (Interest Paid Monthly)

Each month, you repay the borrower's insurance and the interest calculated on the borrowed principal. The principal itself remains untouched and will be repaid in a single lump sum. This is the least expensive option in the long term, but it requires a monthly cash flow effort during the transition phase.

Full Deferral (Capitalized Interest)

Each month, you only pay the insurance. The interest due is deferred and accumulates (it is capitalized). On the day of the sale, you repay the bank the initial principal plus the accumulated interest for the period. This option offers complete peace of mind during the transition because your monthly payments are reduced to a minimum, but the overall cost of the loan is slightly higher.

4. What are the real risks and how can they be avoided?

The main risk of a bridging loan is the failure to sell within the allotted 2-year period. If the market turns or if the property is overestimated, the owner finds themselves, after 24 months, obligated to repay the principal to the bank even though their home has not found a buyer.

If your bank refuses to extend your bridge loan despite serious sales efforts, you can contact the French Banking Federation (FBF) Ombudsman free of charge to reach an amicable agreement.

MeCaza's safeguards to secure your transaction:

  1. Obtain realistic valuations: Don't rely on your own emotional attachment or a single agency's estimate to set the initial price. Get multiple opinions from neutral professionals. A market price from day one guarantees a sale in under 3 months in Paris and the Île-de-France region.
  2. Anticipate a price reduction: Since the bridge loan is calculated at 70% of the value, you have some leeway. If the property doesn't sell after 6 months, reduce the price by 5% or 10%. You will still make a significant profit and cover the loan repayment.
  3. Negotiate the extension: In the event of an unforeseen difficulty beyond your control, banks very often agree to extend the bridge loan by 6 to 12 months if you can prove that concrete actions are being taken (e.g., reduced sales mandate, viewings in progress).

💡 MeCaza Expert Insight

The bridge loan is often unfairly demonized. In reality, unsuccessful outcomes are never due to the banking mechanism itself, but rather to an initial overvaluation of the property for sale.

In a real estate market that has become more rational, a property at the right price sells quickly. Using a bridge loan helps you avoid resorting to temporary rental, which involves two moves, storage costs, and a direct financial loss from rent. It's a tool to optimize comfort and preserve assets. At MeCaza, our property finders model your bridge financing plan from the search phase to ensure a stress-free transition.

A bridge loan failure almost always stems from an overvaluation of the property for sale. If the property you are selling is your primary residence, remember that you are completely exempt from tax on the profit made. Discover the eligibility criteria in our complete guide on capital gains on a primary residence.

FAQ: Your Questions About Bridge Loans

Can a bridge loan be paid off early?

Yes, that's even the fundamental principle of this type of loan. As soon as the notary receives the funds from the sale of your previous property, the bridge loan is repaid. The law strictly regulates this arrangement: no early repayment penalties or fees (IRA) can be charged by the bank for a bridge loan.

What happens if the property sells for more than expected?

If your property sells for a high price, the money collected will first be used to pay off the bridge loan (and the associated loan if you wish). The surplus (the capital gain or excess capital) will be entirely yours and will be deposited into your personal bank account by the notary.

Is it possible to get a bridge loan for a rental investment?

Bridge loans are almost exclusively reserved for the purchase of a new primary or secondary residence. For an arbitrage on rental property, banks prefer other arrangements such as an interest-only loan (crédit in fine) or a Lombard loan, because the calculation of risks associated with the rental vacancy of the purchased property alters the guarantee structure.

Mélanie real estate expert
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Mélanie Jacquet

With solid real estate expertise, Mélanie Jacquet assists individuals in their living and investment projects.

Through her blog, she discusses various topics around real estate: from the most profitable cities in France and Spain to practical guides for optimizing rental management, she shares her successes and her field analyses without filters.

Her dual role as a marketing manager and a real estate enthusiast allows her to transform complex subjects into actionable strategies to build a solid wealth.

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