Legal basis for Swiss residents
Article 244 bis A of the French tax code requires an accredited fiscal representative for non-residents selling French real estate above €150,000 per seller. An explicit carve-out excludes residents of the European Union, the European Economic Area, and Switzerland. Switzerland was added after the Free Movement of Persons agreement and the ECJ case law that ruled the discriminatory treatment incompatible with the agreement. In practice this means the French administration treats a Swiss resident exactly like a Belgian or a German resident for the purposes of the representative rule.
What the carve-out removes is only the representative requirement. The underlying tax, the 2048-IMM filing, and the notaire-side mechanics are identical to any non-resident sale. The gain is computed in euros, taxed at source at the deed, and reported on the seller\'s French annual return (formulaire 2042) if there is a surtax or if there are any adjustments to chase. The notaire will prepare and sign the 2048-IMM on behalf of the seller, which keeps costs low.
Applicable rates in 2026
Three layers apply to a Swiss resident selling French real estate: a flat 19% income-tax CGT on the gain after holding-period taper, a reduced 7.5% solidarity levy on the gain after its own social-security taper, and a progressive surtax that begins at €50,000 of taxable gain per seller and reaches 6% above €260,000. The 7.5% rate is conditional: you must be covered by a Swiss social-security regime (AVS, AI, LAMal) and you must provide a cover certificate. Without it, the notaire withholds the full 17.2%, and you will reclaim the 9.7% difference via a claim (réclamation) filed within the two following calendar years.
View data as table
| Layer | Rate |
|---|---|
| Income-tax CGT | 19% |
| Solidarity levy (Swiss social-security cover) | 7.5% |
| Progressive surtax (top band, gain above €260,000) | 6% |
Worked example: a Geneva couple sells a chalet near Annecy
Marc and Léa live in Geneva and own a chalet near Annecy jointly since 2012. They sell in 2026 for €1,250,000, having bought for €720,000 plus €58,000 of notarial fees, with €95,000 of documented renovation work invoiced by French registered contractors. Each spouse share of the price is €625,000, well above the €150,000 threshold. Because they are Swiss residents, no accredited representative is needed. Gross gain: €377,000 (€1.25m minus €720k minus €58k minus €95k). Holding period at signature: 13 years. Income-tax taper at 13 years cuts the taxable base to roughly 42% of the gross, so €158,340. Social-charge taper at 13 years cuts the base to about 72% of the gross, so €271,440. Income-tax CGT: 19% of €158,340, so €30,085. Solidarity levy (7.5% cover from AVS certificates): 7.5% of €271,440, so €20,358. Progressive surtax on €158,340 of taxable gain: roughly €3,950. Representative fee: zero, none is required. Total French deductions from the escrow: approximately €54,400, against €91,000 they would have paid without the Swiss-cover certificate and without the EU-style carve-out. The notaire handles the 2048-IMM filing on a simple engagement letter, at a typical fee of €400 to €900.
One rare tip for Swiss residents
If you are an international civil servant in Geneva with a P-Card or CD-Card, the default Swiss social-security position may not apply: many UN, WTO, and WIPO staff are covered by an employer-specific scheme (UNSMIS, Van Breda) and are exempt from AVS. The French administration will not accept a UN medical-cover attestation in lieu of an AVS certificate for the 7.5% rate. In that configuration you are outside any EU/EEA or Swiss social-security scheme, and France taxes the full 17.2%. The workaround, if available, is to produce a certificate from your employer confirming that you are not French-resident and are covered by a non-French scheme; some notaires accept it, others do not. Budget the full 17.2% as a baseline and treat any reduction as a bonus.
How the Franco-Swiss treaty really works on the gain
The 1966 treaty, amended several times, gives France the exclusive right to tax gains on French real estate held by Swiss residents (Article 15). Switzerland uses the exemption-with-progression method, meaning the gain is excluded from Swiss taxable income but can push your Swiss marginal rate up on your other income. That second-order effect matters in a handful of cantons with progressive wealth or income scales; in most cases it is a rounding error. There is no Swiss federal CGT on privately held real estate for individuals, and the cantonal CGT regimes apply only to Swiss-situs assets. In short, the French file is terminal and the Swiss side is an informational report.
Canton angle: Geneva, Vaud, Zurich, Ticino
Cantonal treatment is not uniform on the reporting side. Geneva and Vaud ask for a declaration of French-situs real estate for wealth-tax computation; the asset counts, the French mortgage balance is deductible, and the reporting has no cash impact. Zurich and other German-speaking cantons have lighter wealth-tax thresholds and often ignore small French exposures. Ticino treats French real estate as foreign-situs and exempt with progression for income and wealth tax. None of these positions remove or add to the French liability; they only change what you file at home after the deed. Keep a clean French closing file (acte authentique, 2048-IMM, AVS certificate, bank wire proof) to make your next Swiss annual return painless.
Pitfall to avoid
Do not let a well-meaning notaire default your file to the full 17.2% social charges because the AVS certificate was not delivered in time. Once the escrow is withheld and the 2048-IMM filed at the deed, getting the 9.7% difference refunded requires a formal claim, months of waiting, and sometimes two rounds of correspondence with the non-resident tax office in Noisy-le-Grand. Order the Swiss-cover certificate the day you sign the compromis, not the day of the deed, and send a scan to the notaire three weeks before signature.
Key takeaways
- Switzerland sits inside the EU/EEA/CH perimeter, so no accredited representative is required.
- The social levy drops to 7.5% if you prove Swiss social-security cover via AVS or LAMal certificate.
- The Franco-Swiss treaty makes the French file terminal for tax purposes.
- International civil servants in Geneva may fall outside the 7.5% rate, budget 17.2% as a baseline.
- Order the cover certificate at the compromis, not at the deed, to avoid a refund procedure.
Frequently asked questions
Do Swiss residents really not need an accredited fiscal representative in France?
Correct. Since the law was aligned with the ECJ case law and the France-Switzerland free-movement agreement, Switzerland is treated like an EU or EEA country for the purposes of Article 244 bis A. No representative is required, whatever the sale price, as long as you are genuinely a Swiss tax resident on the day of the deed.
Why is the social levy 7.5% instead of 17.2%?
Because you are covered by the Swiss social-security system, France cannot charge the CSG and CRDS slices of the 17.2%, only the prélèvement de solidarité of 7.5% survives. The notaire will ask for a Swiss AVS or LAMal certificate as proof. Without that proof, the escrow is withheld at 17.2% and you have to reclaim the difference later.
Does the Franco-Swiss double-tax treaty eliminate the French tax?
No. The 1966 treaty, as amended, confirms that France has the primary right to tax gains on French real estate. Switzerland then taxes only the imputed rental value and, in some cantons, a gain on a Swiss-situs asset; it does not re-tax the French gain. Expect the French file to be terminal for tax purposes.
Can I appoint a mandataire even though none is legally required?
Yes, and many Swiss sellers do. A mandataire fiscal (not an accredited representative, just an agent) can prepare the 2048-IMM, liaise with the notaire, and deal with later refunds. Fees are usually lower than a full accreditation mandate because the firm does not carry joint liability.