--- title: "Quasi-Resident Status in Switzerland: How to pay less taxes?" url: https://www.ibani.com/en/guides/quasi-resident-status-switzerland-taxes lang: en date_modified: 2026-09-30 author: "Brice DELHOME" --- ![Cross-border tax declaration quasi-resident Switzerland](https://www.ibani.com/images/quasi-resident-impots-suisse.png) πŸ›οΈ Cross-Border Taxation # Quasi-Resident Status in Switzerland: How to pay less taxes? Are you taxed at source in Switzerland? Discover how the subsequent ordinary assessment (TOU) allows you to deduct real expenses and optimize your taxation. 9 minutes read | Updated on 30 September 2026 Author: [Brice DELHOME](https://www.ibani.com/en/author/brice-delhome) with [Francesco Aquilino](https://www.ibani.com/en/author/francesco-aquilino) (Tax Manager, Alporia) Every year, thousands of cross-border workers who are taxed at source leave a portion of their salary to the Swiss tax authorities. The reason? The tax deducted directly from the payslip is calculated according to a flat-rate scale that completely ignores your actual expenses (mortgage interest, childcare costs, pensions). To restore equal treatment with Swiss residents, federal law ([Art. 99a DBG](https://www.fedlex.admin.ch/eli/cc/1991/1184_1184_1184/fr#art_99_a)) allows cross-border workers to request **"Quasi-Resident"** status through a procedure called **subsequent ordinary assessment (TOU, taxation ordinaire ultΓ©rieure)**. However, this process follows strict calculation rules and contains certain pitfalls. Here is a detailed analysis to optimize your taxes without making a mistake. πŸ“Œ Quasi-Resident Status (TOU) at a glance πŸ‘‰ **The concept:** Replacing the flat withholding tax with a complete tax return allowing you to deduct actual expenses. πŸ‘‰ **The golden rule (The 90%):** At least **90% of gross worldwide income**, including your spouse's, must be taxable in Switzerland. πŸ‘‰ **Main deductions:** 3rd Pillar (3a), BVG/LPP buy-ins, childcare costs, mortgage interest for your home in France, continuing education costs. πŸ‘‰ **The strict deadline:** The application must be filed with the cantonal tax administration by **31 March** of the following year at the latest. πŸ‘‰ **The risk:** Since 2021, this choice is **irrevocable**. If your actual expenses are lower than the flat-rate ones, you will pay *more* tax. A preliminary simulation is essential. ## 1\. What is the difference between withholding tax and the TOU? As a cross-border worker (especially in the cantons of Geneva, Zurich, or Aargau), you are subject to **Withholding Tax (ISO)**. Your employer deducts the tax directly from your gross salary according to a scale (e.g., scale A for a single person, B for a married person whose spouse has no gainful activity). This scale incorporates *average flat-rate* deductions. For example, it assumes you have normal commuting expenses or standard medical costs. However, it completely ignores your personal investments (pensions) or heavy expenses (mortgage). The **subsequent ordinary assessment (TOU)**, granted via quasi-resident status, allows you to escape this flat rate. You will fill out a complete Swiss tax return (just like a Geneva or Zurich resident). The administration will calculate your exact tax. If it is lower than the tax deducted at source, you will be refunded the difference. ## 2\. How is the 90% rule calculated? The tax administration is uncompromising on this condition. To qualify as a quasi-resident, **at least 90% of your gross worldwide income, including your spouse's,** must be taxable in Switzerland ([Art. 14 of the Withholding Tax Ordinance](https://www.fedlex.admin.ch/eli/cc/2018/274/fr#art_14)). **Your spouse's income counts:** The most common error concerns couples. If you are married or in a registered partnership, your spouse's income counts towards "worldwide income," even if they work exclusively in France. ### What is included in the calculation? - **Swiss Income (The numerator):** Your gross cross-border salary, any real estate income you own in Switzerland. - **Worldwide Income (The denominator):** Your Swiss salary + your spouse's French salary + rental income in France (gross rents) + dividends and interest from your worldwide bank accounts + any pensions received. **Applicable exchange rate:** To convert your spouse's income (in Euros) to Swiss Francs for the 90% calculation, the tax administration uses an **Official average annual exchange rate** published by the Federal Tax Administration (FTA). **Concrete examples:** - **Single tenant:** Swiss salary of 100,000 CHF. No other income. β†’ **100%** of Swiss income. Status granted. - **Married couple, rental owners:** Swiss salary of 120,000 CHF. Spouse's French salary: 10,000 CHF (equivalent). Rent collected in France: 15,000 CHF (equivalent). Total income: 145,000 CHF. Swiss share: (120,000 / 145,000) = **82.8%**. Status denied. ## 3\. Which deductions can the TOU unlock? If you are eligible (the 90% is reached), you access the tax Holy Grail: the deduction of your real expenses. Here are the items that generate the biggest refunds: | Deduction category | Details and limits | | --- | --- | | **Tied pension (3rd Pillar A)** | Full deduction of contributions up to the legal limit: 7,258 CHF in 2026 for an employee affiliated to a pension fund, i.e. 8% of the upper BVG/LPP limit of 90,720 CHF ([BVV 3/OPP 3, Art. 7](https://www.fedlex.admin.ch/eli/cc/1985/1778_1778_1778/fr#art_7)). This is the main driver for requesting the TOU. | | **Pension buy-ins (BVG / 2nd Pillar)** | Amounts paid voluntarily to fill pension gaps are deductible (can represent tens of thousands of francs). | | **Passive interest (Loans & Mortgages)** | You can deduct interest on your mortgage (even for a house located in France) or consumer loans. *(Note: requires the declaration of worldwide wealth)*. | | **Childcare costs** | Actual daycare or nanny costs for a child under 14, justified by invoices: up to 25,800 CHF per child per year for the federal direct tax ([DBG/LIFD, Art. 33 para. 3](https://www.fedlex.admin.ch/eli/cc/1991/1184_1184_1184/fr#art_33)); the cantonal cap varies, e.g. 25,000 CHF in Geneva ([LIPP, Art. 35](https://silgeneve.ch/legis/data/rsg_d3_08.htm)). | | **Professional commuting costs** | If the distance from home to work is significant. Note: the deduction for commuting costs is capped at 3,300 CHF a year for the federal direct tax ([DBG/LIFD, Art. 26 para. 1 let. a](https://www.fedlex.admin.ch/eli/cc/1991/1184_1184_1184/fr#art_26)) and at only 500 CHF for the Geneva cantonal tax ([LIPP, Art. 29 para. 1 let. a](https://silgeneve.ch/legis/data/rsg_d3_08.htm)). | | **Alimony / Child support** | Alimony paid following a divorce or for child support is fully deductible from taxable income. | ## 4\. Why run a simulation before requesting the TOU? Applying for quasi-resident status is not a simple risk-free "attempt." This is where many cross-border workers make a costly mistake. **Since the 2021 revision, the request for subsequent ordinary assessment (TOU) is IRREVOCABLE.** What happens if you request the TOU? The tax administration cancels your flat-rate withholding tax and recalculates everything from scratch. - **The danger:** If the total of your "real expenses" (commuting, meals, insurance) ultimately turns out to be *lower* than the standard flat rate that was secretly included in your withholding scale, the tax administration will ask you to **pay a tax supplement**! - **The impossibility of turning back:** once filed, the request cannot be withdrawn ([Art. 14 para. 1 of the Withholding Tax Ordinance](https://www.fedlex.admin.ch/eli/cc/2018/274/fr#art_14), in force since 1 January 2021), even if the calculation turns out to be against you. If the final bill is higher, you will have to pay it. *Our expert advice:* **Never** file a TOU request without first running an accurate simulation, either via your canton's official software (e.g., GeTax in Geneva) or by consulting a cross-border fiduciary or tax specialist. ## 5\. In which cantons is quasi-resident status useful? The relevance of this status depends entirely on the canton where your employer is located, due to Franco-Swiss bilateral agreements. ### πŸ“ Cantons with generalized withholding tax (Geneva, Zurich, Aargau, etc.) This is the main playground for quasi-resident status. In the canton of Geneva, which did not sign the 1983 agreement, tax is systematically deducted in Switzerland. Requesting the TOU by 31 March is the normal procedure to claim a 3rd pillar or childcare costs. ### πŸ“ Cantons of the 1983 Agreement (Bern, Solothurn, Basel-Stadt, Basel-Landschaft, Vaud, Valais, NeuchΓ’tel, Jura) In these cantons, the default rule is that the cross-border worker (who returns daily to France) is **exempted from withholding tax in Switzerland** (they pay their taxes to the French tax authorities, under the 1983 agreement incorporated into the [Franco-Swiss double taxation convention, Art. 17(4)](https://www.fedlex.admin.ch/eli/cc/1967/1079_1119_1113/fr#art_17)). By definition, you cannot request a TOU to recover a tax that was never deducted. **Exceptions in these cantons:** Quasi-resident status remains possible and relevant *only* for: - Public sector employees (University hospitals like CHUV, administrations) who are taxed at source. - "Weekly" commuters (who rent a base in Switzerland and only return to France on weekends), who lose their cross-border tax status and are subject to withholding tax. ## 6\. How do you receive your tax refund in euros? You have made your calculations, submitted your TOU, and the cantonal tax administration notifies you of excellent news: **they will refund you 3,500 CHF in overpaid taxes!** This sum now has to make its way back to France: it is better to [convert your Swiss francs into euros](https://www.ibani.com/en/currency-converter/chf-to-eur-rate) at the real market rate, plus a margin of 0.40% to 0.15% depending on the amount, than at your bank's exchange rate. πŸ’‘ The fatal mistake at the final stretch: Providing the Swiss administration with the IBAN of your French bank or European neobank. The tax office will send Swiss francs. Your bank will intercept this international transfer, deduct SWIFT processing fees (often 15 to 25 €), and most importantly, apply its own margin on the exchange rate. On 3,500 CHF, you can easily lose more than 80 € into the financial void. πŸš€ The ibani approach: 1. **A free Swiss IBAN:** Open the ibani app. We assign you a purely Swiss receiving IBAN (starting with CH). 2. **The local transfer:** Provide this IBAN to the cantonal tax administration. For the tax office, this is a standard domestic Swiss transfer, free and fast. 3. **The conversion into euros:** Upon receipt of your 3,500 CHF, ibani converts them to euros with an exchange margin announced in advance, from 0.40% to 0.15% depending on the amount, then transfers them to your account in France. ### Regain control of your cross-border finances From automated salary repatriation to the conversion of your tax refunds, ibani converts your Swiss francs into euros with a margin of 0.40% to 0.15% depending on the amount. [Discover the ibani app](https://www.ibani.com/en/app) ## Frequently Asked Questions (Quasi-Resident and TOU) ### What is the deadline to apply for quasi-resident status (TOU)? The request for subsequent ordinary assessment (TOU) must be submitted no later than 31 March of the year following the receipt of income (e.g., by 31 March 2026 at the latest for income received in 2025). Past this date, the deadline expires and the tax withheld at source becomes final. ### Is the quasi-resident application (TOU) revocable? No. Since the revision of the withholding tax law (effective in 2021), the TOU request is irrevocable for the tax year concerned. If the final calculation established by the administration is against you, you will not be able to revert to traditional withholding taxation. A prior simulation is therefore indispensable. ### Can I deduct my mortgage interest for a loan in France? Yes, this is one of the major advantages of the quasi-resident status (TOU). You can deduct the passive interest of your debts, including the mortgage of your main residence located in France. This deduction is made proportionally to the international distribution of your wealth (you will therefore have to declare the value of your property and the balance of your loan). ## Official sources - [Federal Act on Direct Federal Taxation (DBG), Art. 99a (subsequent ordinary assessment on request, deadline 31 March)](https://www.fedlex.admin.ch/eli/cc/1991/1184_1184_1184/fr#art_99_a) β€” Fedlex (official French text), accessed 29 September 2026 - [FDF Ordinance on Withholding Tax for the Direct Federal Tax, Art. 14 (quasi-residence: 90% threshold; an application cannot be withdrawn)](https://www.fedlex.admin.ch/eli/cc/2018/274/fr#art_14) β€” Fedlex (official French text), accessed 29 September 2026 - [Convention between Switzerland and France for the elimination of double taxation with respect to taxes on income and on capital and the prevention of tax fraud and evasion, Art. 17(4) (agreement of 11 April 1983 on cross-border workers)](https://www.fedlex.admin.ch/eli/cc/1967/1079_1119_1113/fr#art_17) β€” Fedlex (official French text), accessed 29 September 2026 - [Federal Act on Direct Federal Taxation (DBG/LIFD), Art. 26 (commuting costs, at most 3,300 CHF) and Art. 33 para. 3 (childcare costs, at most 25,800 CHF per child)](https://www.fedlex.admin.ch/eli/cc/1991/1184_1184_1184/fr#art_26) β€” Fedlex (official French text), accessed 30 September 2026 - [Ordinance on Tax Deductions for Contributions to Recognised Forms of Pension Provision (BVV 3/OPP 3), Art. 7 (8% of the upper BVG/LPP limit)](https://www.fedlex.admin.ch/eli/cc/1985/1778_1778_1778/fr#art_7) β€” Fedlex (official French text), accessed 30 September 2026 - [Ordinance on Occupational Old Age, Survivors' and Invalidity Pension Provision (BVV 2/OPP 2), Art. 5 (upper limit of 90,720 CHF)](https://www.fedlex.admin.ch/eli/cc/1984/543_543_543/fr#art_5) β€” Fedlex (official French text), accessed 30 September 2026 - [Geneva Act on the Taxation of Natural Persons (LIPP, rsGE D 3 08), Art. 29 (commuting costs, 500 CHF) and Art. 35 (childcare costs, 25,000 CHF)](https://silgeneve.ch/legis/data/rsg_d3_08.htm) β€” Republic and Canton of Geneva (official French text), accessed 30 September 2026 ## To go further: - [Tutorial: How to calculate the hidden margins of a bank transfer?](https://www.ibani.com/en/guides/how-to-calculate-exchange-rate) - [Practical Guide: Automate the payment of your 3rd Pillar (3a) in CHF](https://www.ibani.com/en/guides/automate-swiss-bill-payments) ## Master your cross-border wealth Do not miss any tax deadlines and discover our tips to maximize your purchasing power in Switzerland. 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