I bought my house in the Pays de Gex with a loan in Swiss francs: does it complicate the sale?
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Did you buy your house in Ferney-Voltaire, Saint-Genis or Gex with a loan in Swiss francs (CHF) a few years ago? Today, for professional or family reasons, you are considering selling. But you are concerned about one question: will your foreign currency loan complicate the sale, or even make you lose money at the time of early repayment? The short answer: yes, the CHF credit adds complexity related to the EUR/CHF exchange rate risk, but no, it does not block the sale. Here is everything you need to know to anticipate the financial impacts and sell with peace of mind.
Do I have to pay off my CHF credit when I sell?
Yes, absolutely. When you sell a property financed by a loan, you must repay the loan in advance on the day of the signing of the authentic deed at the notary's office.
Why this obligation?
Every real estate loan has a guarantee (mortgage, lender's privilege, or guarantee) linked to the property being financed. This guarantee protects the bank: if you no longer pay your monthly payments, it can seize the property.
As a result , as soon as you sell the property, you no longer own it. The bank guarantee must therefore be lifted, which requires the full repayment of the outstanding capital (CRD).
The prepayment process
- You find a buyer and sign a preliminary sale agreement
- You contact your bank to request an early repayment statement
- The bank calculates the amount to be repaid in CHF on the expected day of the sale
- On the day of the authentic deed, the notary uses part of the proceeds of the sale to pay off the loan
- You get the balance back after repaying the loan and paying the fees
Waiting time : allow 2-4 weeks between your request and the receipt of the statement by the bank.
How does the EUR/CHF exchange rate impact my refund?
This is THE critical point with a foreign currency loan: the exchange rate risk. Here's how it works in practice:
Understanding the mechanism
- You bought a house for €500,000
- EUR/CHF rate: 1.15 (€1 = CHF 1.15)
- Amount borrowed: CHF 575,000
For sale (2026):
- You sell the house for €650,000 (nice capital gain!)
- You have CHF 450,000 left to pay off
- Current EUR/CHF rate: 0.93 (€1 = CHF 0.93 only)
Problem : to repay 450,000 CHF, you have to convert your sales euros.
- Calculation: CHF 450,000 ÷ 0.93 = €483,870
You must therefore take out €483,870 to repay a debt that, at the original rate, would have been worth only €391,300 (450,000 ÷ 1.15).
Additional cost related to foreign exchange : €92,570! This is the "unpleasant surprise" of CHF credit in the event of a strengthening Swiss franc.
Historical EUR/CHF evolution and impacts
Between 2008 and 2026, the Swiss franc appreciated sharply. A cross-border worker who borrowed in 2008 and sold in 2026 would suffer a massive exchange rate loss.
Are there any additional prepayment penalties?
Yes, as with any real estate loan, early repayment generates early repayment penalties (IRA) or penalties.
Penalty Amounts
- 6 months' interest on principal repaid
- 3% of the outstanding capital
Example :
- Outstanding capital: CHF 450,000
- Credit rate: 2% (assumption)
- Calculation 1: (450,000 × 2%) ÷ 2 = 4,500 CHF (6 months interest)
- Calculation 2: 450,000 × 3% = 13,500 CHF
- IRAs applied : CHF 4,500 (lowest)
Converted to EUR at the rate 0.93: 4,500 ÷ 0.93 = €4,839
Ability to negotiate or avoid IRAs
- You remain a customer with them (new loan for new acquisition)
- You take out other products (life insurance, savings plan)
- Your initial contract included a no-cost early repayment clause
Tip : negotiate with your bank BEFORE signing the sales agreement.
Can I choose where to exchange EUR to CHF?
Yes, in some cases, but it depends on your type of bank guarantee.
If you have a mortgage or PPD
The problem is that banks often apply large margins on the exchange rate (0.5% to 2%), which increases the cost.
Example of CHF 450,000 :
- Market Rate: 0.93
- Bank margin 1.5%: applied rate 0.916 (0.93 ÷ 1.015)
- Amount in EUR: 450,000 ÷ 0.916 = €491,266 (instead of €483,870 at market rate)
- Additional cost : €7,396 only related to the exchange rate margin
If you have a surety bond
Approach :
- Contact your bank to check if they accept an external exchange
- If yes, get the statement in CHF
- Exchange money at an intermediary with a reduced margin (0.25-0.5%)
- Transfer the CHF to the bank account for refund
Potential gain : €3,000 to €8,000 on a repayment of CHF 400-500k.
What happens if I no longer work in Switzerland at the time of the sale?
Common situation: you left your cross-border job before selling (career change, dismissal, retirement).
Double financial risk
- You must continue to pay your monthly instalments in CHF
- If you no longer earn in CHF, you must buy francs every month with your EUR income
- Monthly exchange rate loss on each monthly payment
At the time of final reimbursement :
- Same problem as explained above: conversion of EUR→CHF of the proceeds at the unfavourable rate
Practical solutions
- Minimizes the number of monthly payments to be paid by changing EUR→CHF
- Limits exposure to currency risk over time
Option 2 : Negotiate with the bank to change the loan to EUR
- Some banks accept to convert a CHF loan into EUR
- Please note : this triggers an early repayment of the CHF loan + taking out a new EUR loan
- Fees: IRA + new warranty fee + exchange cost at the time of conversion
- To study if you are sure that you will not work in Switzerland for several years
Specificities of the Pays de Gex real estate market
High prices = large CHF amounts
With such high amounts, each 0.01 point change in the EUR/CHF rate has a significant impact on the repayment.
Example :
- Debt: CHF 600,000
- Rate 0.93: reimbursement €645,161
- Rate 0.92: reimbursement €652,174
- Difference for 0.01 points : €7,013
In the Pays de Gex, plan for a safety margin of 5-10% on the estimate of your net balance after sale to absorb a possible variation in the exchange rate before signing.
Anticipate 2-3 months before listing
- Obtain a provisional statement of outstanding capital in CHF
- Simulate the amount of EUR needed under different exchange rate scenarios
- Evaluate your estimated net balance after sale: (sale price) - (CHF refund converted to EUR) - (agency fees) - (IRA)
This will allow you to set a minimum sale price below which you would lose money.
Case study: selling in the Pays de Gex with a CHF credit
Initial purchase (2016):
- House in Saint-Genis-Pouilly : 480 000 €
- Contribution: €80,000
- CHF loan: €400,000 × 1.10 (2016 rate) = CHF 440,000 over 25 years at 1.8%
Planned sale (2026):
- Sale price: €620,000 (nice capital gain!)
- Outstanding capital: CHF 320,000
- Current EUR/CHF rate: 0.93
Calculation of the refund :
- CHF 320,000 ÷ 0.93 = €344,086
- IRA (3% CRD): 9,600 CHF = 10,323 €
- Agency commission (5%): €31,000
- Total to be paid : 344,086 + 10,323 + 31,000 = €385,409
Net balance for Marc : 620,000 - 385,409 = €234,591
If the EUR/CHF rate had remained at 1.10 (as in 2016), Marc would have repaid only €290,909 instead of €344,086, i.e. €53,177 saved. Marc suffers a foreign exchange loss of €53k, but remains a winner thanks to the real estate capital gain (+€140k).
Conclusion: yes it complicates, but it's manageable
Selling a house in the Pays de Gex with a CHF credit adds a layer of complexity related to the EUR/CHF exchange rate risk. Depending on how the Swiss franc has changed since your purchase, you can either gain or lose tens of thousands of euros at the time of early redemption.
The right reflexes :
✅ Contact your bank 2-3 months BEFORE listing
✅ Get a provisional statement in CHF
✅ Simulate different exchange rate scenarios
✅ Negotiate IRAs if possible
✅ Compare bank exchange rates vs specialized intermediaries
✅ Allow a 5-10% margin of safety on your estimated net balance
With good preparation and precise numerical simulations, you will sell with complete peace of mind despite the complexity of foreign currency credit.
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Posted on 20/04/2026 by
Antoine Lanfranchi
Je mets mon expertise du marché immobilier du Pays de Gex au service de vos projets, avec une approche rigoureuse, personnalisée et orientée résultats. Ma parfaite connaissance du territoire et de ses spécificités me permet de vous accompagner efficacement à chaque étape, de l’estimation à la concrétisation de votre projet.
J’interviens sur :
- la transaction (achat et vente de biens immobiliers)
- les programmes neufs
- le conseil juridique immobilier
Mon objectif est de vous offrir un accompagnement transparent et efficace, en valorisant votre bien et en sécurisant chaque étape. En me confiant votre recherche ou la vente de votre bien, vous bénéficiez d’un réseau solide, d’une expertise éprouvée et d’une connaissance fine du marché local.
