Geneva cross-border worker: tax withheld at source in Switzerland and tax credit in France

A French resident working in Geneva is subject to withholding tax in Switzerland: the employer deducts tax from their salary. This salary must still be declared in France, but the tax authorities state that "there will be no double taxation." A tax credit, provided for by the Franco-Swiss tax treaty of September 9, 1966, is equal to the amount of French tax corresponding to this salary, provided that the employee is also subject to Swiss tax. The Swiss tax is not deductible; it serves as a prerequisite for the tax credit.

This page follows the pages of the French administration and the canton of Geneva as of 18/10/2026. It does not reproduce any Geneva tax scales: the amounts of withholding tax can be found in the canton's publications.

Geneva collects tax at source

According to the Canton of Geneva, withholding tax is "deducted directly from your salary by your employer or insurer." The page "Who is subject to withholding tax?" (updated January 12, 2026) lists "cross-border workers" domiciled abroad among those subject to withholding tax, without specifying any nationality or age requirements. The same page indicates that you must notify the canton if you cease working in Geneva.

On the French side, the page "Am I a cross-border worker?" (updated 21/05/2026) mentions the general rule for the eight cantons of the 1983 agreement (Vaud, Valais, Neuchâtel, Jura, Bern, Basel-Stadt, Basel-Landschaft, and Solothurn) and, for the other cantons, including Geneva, indicates that "taxes are paid in Switzerland, i.e., in the state where the activity is carried out." Geneva is not one of the eight cantons of this agreement; these are covered on the sister page about the 1983 agreement.

What France is asking for: to declare, then neutralize

The page "Employees in Switzerland" (updated 09/17/2026) describes case 2: "You are taxed at source in Switzerland, and you must declare this income in France, your country of tax residence." For employees in Geneva, this corresponds to case 2A, with a tax credit "equal to the amount of French tax." Case 2B, which specifically targets employees of Swiss companies operating in international transport on board ships, planes, trains, or boats, provides, on the other hand, a credit equal to the tax paid in Switzerland.

The text of the convention (Article 25 A § 1 a) states that income taxable in Switzerland, which constitutes taxable income of a resident of France, is taken into account for the calculation of French tax. The tax credit is "equal to the amount of French tax corresponding to this income," provided that "the resident of France is subject to Swiss tax on this income.".

Where to put the salary in the tax return

The instructions for form 2047 (year 2026, income 2025) specify that the salaries of cross-border workers employed in Geneva, or in cantons that did not sign the 1983 agreement, should be declared on lines 1AF to 1DF of form 2042. They should also be entered in box 8TK. The same instructions define French tax: "French tax refers to income tax plus social security contributions." They describe the method as a calculation of French tax, which is then offset "by a French tax credit of the same amount.".

Form 2047-SWITZERLAND is used to determine "net salaries after deductions, converted into euros," based on the Swiss salary certificate. If completed online, the amounts are automatically transferred to form 2042. The administration's website does not provide the formula for calculating this net amount; it is found in the form's instructions, which are not reproduced on this page.

The French scale serves as the basis for calculation

For income from 2025, declared in 2026, the income tax scale for one share is as follows (service-public.gouv.fr, verified on April 15, 2026).

This scale applies to the entire household income, including Swiss salary, since the convention takes foreign income into account in the calculation.

Geneva cross-border worker: a numerical example (fictitious profile)

Situation. Inès, single with no children, lives in Haute-Savoie and works in Geneva. Her only income is this salary. After conversion to euros and deductions, her net taxable income in France is €60,000 (fictitious figure).

Issue. To find out if she pays tax twice: at source in Geneva, then in France.

Strategy. Declare the salary in France (2047-SWITZERLAND, case 2A), have the French tax calculated on €60,000, then deduct the tax credit provided for in Article 25 A § 1 a.

Result (CALCULATION). The service-public.gouv.fr scale gives:

In this example, the tax credit is calculated on income tax alone, amounting to €11,103.99. However, the instructions for form 2047 define French tax as income tax plus social security contributions: this portion is not calculated here. In this calculation alone, the income tax after the credit is €0.00, which reveals nothing about the final amount owed by the household. The average income tax rate before the credit is 18.51%.

This calculation is intentionally limited. It assumes a single income, one household, and does not take into account any potential tax credit or social security contributions. It does not specify how much Inès pays in Geneva: Geneva's withholding tax is determined by the canton and its own tax schedule, which is not included here. If the household has other income, the portion of the tax credit attributable to the Swiss salary is not determined by the sources consulted for this page.

Remote work: two limitations and one consequence

A fact sheet from the administration addresses teleworking "outside the cross-border worker regime according to the agreement of April 11, 1983," using the example of an employee residing in Annemasse and working in Geneva. It does not display an update date, but cites the amendment of June 27, 2023, to the agreement and an interpretative amicable agreement of April 29, 2026.

According to this document, days spent on temporary assignments can be considered equivalent to teleworking "up to an annual limit of 10 days," and the examples apply a "double limit of 40 days of working time and 10 days of temporary assignments." Beyond these limits, the document indicates, in its first example, that compensation for the excess days "will be taxable in France." The exact breakdown of days, including the rules for allocating between teleworking and assignments, can be found in the document and the amicable agreement; this page does not reproduce it.

Social security contributions: a point not to be overlooked

The instructions for form 2041-GG state that the CSG and CRDS social security contributions apply to foreign-sourced employment income when the individual is "covered, in any capacity whatsoever, by a mandatory French health insurance scheme," subject to a tax treaty. The impact of this rule on a cross-border worker in Geneva is not established by the sources consulted. The issue of health insurance is addressed on the related page concerning the right to choose the LAMal (Swiss Health Insurance Act).

What this page doesn't say

• The amounts and rates of the Geneva withholding tax.
• The exact proportion of credit when the household has other income.
• The application of CSG and CRDS to Geneva salaries.
• The fate of the funds transferred by the canton to the French municipalities.
• The precise count of days of teleworking and temporary assignments.

What changes depending on your situation

• Your family situation : the number of shares affects French tax.
• Your other income : French rents, dividends, pensions or salaries.
• Your cross-border worker status : case 2A, 2B, or case 1 if your canton is one of the eight in the 1983 agreement.
• Your teleworking and your days spent outside of Geneva.
• Your health insurance coverage : French health insurance or LAMal.

The rule depends on your situation. No results are guaranteed.