Withholding tax in Geneva: understand your scale and recover the excess

Every month, one line of your Geneva payslip goes straight to the tax office: withholding tax. You file no return, your employer deducts and pays. Convenient — but expensive, because the tax scale applied ignores most of your personal deductions. Here is how it is calculated, and how to recover what was over-withheld.

1. Who is concerned in Geneva?

Two very different groups pay withholding tax in the canton:

• Non-resident workers — first and foremost cross-border commuters living in France. They are taxed in Geneva because the canton, unlike eight other Swiss cantons, does not apply the 1983 agreement that assigns taxation to the country of residence.
• Foreign residents without a C permit domiciled in the canton (B, L permits, etc.). For them withholding tax is an advance payment: as soon as annual gross income reaches CHF 120,000, a subsequent ordinary assessment becomes mandatory — they file a full return and the withholding tax is credited.

C permit holders and Swiss citizens domiciled in the canton are not concerned: they file in the ordinary way.

2. The scales: A, B, C, H — and the number of child allowances

Since the federal harmonisation of withholding tax that came into force in 2021, all cantons use the same scale letters. What differs between cantons is the level of the rates.

• Scale A — single person: unmarried, divorced, separated or widowed, without children.
• Scale B — married couple where only one spouse is gainfully employed.
• Scale C — married couple where both spouses work (the "double earner" scale). The highest scale, because it assumes a second income.
• Scale H — single person living with children whose maintenance they mainly provide (single-parent family).

In Geneva the letter is followed by the number of recognised child allowances: A0 for a single person without children, A1 with one child, C2 for a dual-income couple with two children, and so on. Each additional allowance lowers the rate.

3. The Geneva specificity: the annual model

Switzerland has two calculation models. Most cantons apply the monthly model: the rate is determined each month on that month's salary. Geneva — like Vaud, Valais, Fribourg and Ticino — applies the annual model: the rate is determined on annual income.

Three concrete consequences:

• The 13th salary and bonuses do not trigger the rate spike they cause under the monthly model: they are smoothed over the year.
• If you work only part of the year (hired in September, leaving in April), income is annualised to determine the rate, but tax is due only on what was actually received.
• A part-time rate or several employers complicate the calculation: the determining income takes all activities into account.

4. What the scale already includes — and what it ignores

This is the least understood point. Withholding tax is calculated on gross salary, not on a net after charges. But the scale already includes, on a lump-sum basis:

• mandatory social contributions (OASI/DI/LEC, unemployment insurance, accident insurance, occupational pension);
• a lump sum for professional expenses;
• a lump sum for insurance premiums and social deductions;
• child allowances corresponding to the scale number.

On the other hand, it completely ignores your actual deductions: pillar 3a contributions, pension fund buy-ins, alimony paid, effective childcare costs, mortgage interest, training costs, professional expenses above the lump sum. If any of these apply to you, the tax withheld is too high.

5. Reading your payslip: an example at CHF 100,000

A single cross-border commuter without children, gross annual salary of CHF 100,000, paid in 13 instalments:

2026 estimate. Accident and pension rates depend on the employer, your age and the pension plan; the tax rate depends on your exact scale. The withholding rate shown is an estimate for scale A0.

Note the order of magnitude: withholding tax is here the largest deduction on the payslip, more than social security and the pension fund combined. That is precisely why it is worth checking that it is calculated correctly.

6. Quasi-resident status: the most profitable lever

If you earn at least 90 % of your worldwide gross income in Switzerland — including your spouse's —, you can ask to be treated as a quasi-resident. In practice you file a full Geneva tax return and claim your actual deductions instead of the scale's lump sum.

Three rules to know:

• The deadline is strict: 31 March of the following year. After that date, the tax withheld becomes final. No extension is granted for filing the request.
• The request is irrevocable and applies to the whole tax year. If the calculation turns out against you — possible, notably if your spouse has a high income in France or if you own assets — you cannot go back.
• The status is reassessed every year: it is not acquired once and for all.

Always run both scenarios before filing. For a single commuter who pays the maximum into pillar 3a and repays a mortgage in France, the gain is often several thousand francs. For a couple whose spouse works in France, it is frequently the opposite.

7. Scale correction: the other request, often confused

Alongside the quasi-resident's subsequent ordinary assessment, there is a request to recalculate the withholding tax. It serves to correct a calculation error: wrong scale, wrong number of allowances, wrongly determined taxable salary, double deduction. It is filed with the cantonal tax administration, also by 31 March of the following year.

The distinction matters: correction fixes a wrong calculation, subsequent ordinary assessment replaces a correct but lump-sum calculation with an individual one. In both cases the deadline is the same — and it is the one date of the tax year to remember without fail.

8. Working from home: two thresholds not to be confused

Since remote work became widespread, two separate ceilings apply to cross-border commuters, and they have nothing to do with each other:

• The tax threshold. An agreement between France and Switzerland allows part of working time to be spent working from home in France — up to 40 % of annual working time — without changing the tax regime of the salary. The details were set out in an addendum to the double taxation treaty; check the version in force for the year concerned.
• The social security threshold. A European framework agreement allows up to 49.9 % of working time from the country of residence while remaining insured in the employer's country — provided a request has been filed. Beyond that, social security liability shifts to France, which changes everything: contributions, health insurance, pension.

In both cases the employer must be informed and a formal procedure is usually required. Never assume an informal arrangement is covered.

9. What about the French tax return?

Being taxed at source in Geneva does not exempt you from filing in France. You declare your Swiss salary to the French authorities, which apply the France–Switzerland double taxation treaty and grant you a corresponding tax credit. The Swiss income is thus taken into account to determine your French tax rate — and therefore, indirectly, the tax due on your other income — but it is not taxed a second time.

Also think about the exchange rate: the French administration uses an official conversion rate for the year. A 3-centime difference in the CHF/EUR rate on a CHF 100,000 salary means EUR 3,000 more or less declared income.

Frequently asked questions

How much withholding tax do you pay in Geneva?

The rate is progressive and depends on the scale. For a single person without children it is nil up to just under CHF 30,000 of annual income, sits around 12 to 13 % at CHF 90,000–100,000, and approaches 21 % above CHF 200,000. The exact rate must be checked with the canton's official calculator, the only binding source.

Can you recover part of the withholding tax?

Yes, through a request for recalculation (scale or base error) or through a subsequent ordinary assessment as a quasi-resident (actual deductions). Both must be filed before 31 March of the following year. Without action within that deadline, the deduction becomes final.

Can a cross-border commuter deduct a pillar 3a contribution?

A commuter subject to Swiss social security can open a pillar 3a. But the deduction only has a tax effect if you are taxed on the basis of your actual deductions, i.e. as a quasi-resident. If you stay on the lump-sum scale, the 3a contribution does not reduce the tax withheld.

What happens if you change employer during the year?

Each employer withholds tax on the salary it pays. Under Geneva's annual model the rate is determined on annual determining income: if you hold two jobs or change mid-year, the deduction may be imprecise. This is a typical case for a correction request.

Who pays the tax over: me or my employer?

The employer. It is the debtor of the taxable benefit: it withholds the tax from your salary and pays it to the cantonal tax administration. If too little is withheld, the employer is liable to the tax office — one more reason to report any change in family situation without delay.