Swiss Payroll Taxes: Source Tax (Quellensteuer) for Foreign Employees

For most Swiss residents, income tax is never deducted from pay. They file an annual return and settle directly with the canton and commune. There is one large exception: foreign employees who do not hold a C settlement permit, together with cross-border workers, have their income tax withheld by the employer straight from each pay slip. This is tax at source, known as Quellensteuer in German and impot a la source in French.

Source tax is only one layer of a Swiss pay slip. On top of it, every employer also withholds the employee's share of social-security contributions and adds its own employer share. Getting the two systems right, and settling them on time with the cantonal tax office and the social-security funds, is the core of Swiss payroll compliance for any company that hires staff. Every rate below is the 2026 position; statutory parameters are reviewed regularly, so confirm the current-year figures before each payroll year.

There is no single federal payroll tax in Switzerland. Instead, an employer withholds two separate things. The first is social-security contributions, which apply to every employee regardless of nationality or permit. The second is income tax at source (Quellensteuer), which applies only to foreign employees who do not yet hold a C settlement permit. Swiss nationals and C-permit holders have no income tax withheld from their wages; they file an ordinary return instead.

That two-part structure is why "payroll tax" is a misnomer here. In the United States or the United Kingdom, a payroll tax is a single levy on wages. The Swiss model splits the job: a social-insurance stack that every salary carries, plus a wage tax that only part of the workforce pays. For a foreign employer the practical question is therefore not "what is the Swiss payroll tax" but "what do I deduct from this particular employee, and where do I send it". The rest of this guide answers both, deduction by deduction.

Two Swiss taxes share the English word "withholding", and conflating them is the single most common payroll mistake. The table below sets them apart.

• Quellensteuer (tax at source): income tax on the wages of certain foreign employees. The rate is variable and read from a cantonal tariff. The employer withholds it from salary and remits it to the cantonal tax office. It is a final settlement for most employees. This is the payroll tax this guide is about.
• Verrechnungssteuer (anticipatory tax): a flat 35 percent federal tax on investment income such as dividends, interest and certain lottery winnings. It is a security deposit that a declaring resident reclaims through the tax return, typically within a three-year claim window. It has nothing to do with salaries.

Different base, different rate, different administration, different purpose. If you are researching the 35 percent levy on company distributions, that is the anticipatory tax and a corporate matter; our guide to the 35% anticipatory tax (Verrechnungssteuer) covers it in full. Payroll deals only with Quellensteuer.

Every employee, foreign or not, carries the same social-insurance stack. The 2026 rates, hedged and to be confirmed each year, run roughly as follows.

• AHV/IV/EO (first pillar): old-age, disability and income-compensation insurance, about 10.6 percent of gross salary split equally, so the employer withholds around 5.3 percent from the employee and pays a matching 5.3 percent. No upper salary ceiling.
• ALV (unemployment): about 2.2 percent total, shared equally, applied up to an annual ceiling in the region of CHF 148,200 (2025 figure, verify 2026), with a 1.0 percent solidarity contribution on salary above the ceiling.
• BVG/LPP (second pillar, occupational pension): compulsory above an entry threshold of roughly CHF 22,000 of annual salary (confirm the current figure). Contributions are calculated on the coordinated salary and rise with age, from about 7 percent at 25 to 34, to 10 percent at 35 to 44, 15 percent at 45 to 54 and 18 percent at 55 to 65. The employer must fund at least half.
• UVG/LAA (accident): the employer pays the occupational-accident premium; the employee usually pays the non-occupational premium, withheld from salary for staff working eight hours a week or more. Rates depend on the insurer and risk class.
• FAK/CAF (family allowances): roughly 1.7 to 3.5 percent, employer-only, set by each canton.

Combined employee deductions before any source tax commonly land around 12 to 15 percent of gross, while the total employer-plus-employee burden is often in the region of 21 to 25 percent. These are approximate. Our guide to the full social-security contribution system sets out all three pillars, and how BVG occupational pension works explains the coordinated salary and age bands in detail.

Source tax is meant to be the final settlement for most employees, but not for higher earners. As of 2026, where a source-taxed employee's gross annual employment income reaches roughly CHF 120,000, the canton applies a subsequent ordinary assessment (nachtragliche ordentliche Veranlagung, or NOV). The employee then files a full return like a resident, the source tax already withheld is credited against the final bill, and any difference is settled with the tax office. This threshold has applied nationwide since the 2021 source-tax reform and is not inflation-indexed, so confirm the current rule.

Below CHF 120,000, an employee can request a voluntary ordinary assessment by 31 March to claim deductions the flat tariff does not give, such as Pillar 3a contributions, commuting or childcare. Since the 2021 reform that choice is irrevocable: once made, it binds the employee to file every year afterwards. Whether tax at source or a full return works out better is a trade-off between simplicity and deduction recovery, and it depends on the individual's circumstances, so this is a point to model rather than assume. The mechanics of personal liability are covered in our guide to ordinary income-tax assessment.

Before the first salary run, a new Swiss employer typically registers with five bodies: the cantonal tax office for source tax, an AHV compensation office (Ausgleichskasse) for the first pillar, a BVG pension fund, a UVG accident insurer, and the source-tax register for any employee taxed at source. Competitors scatter these; treat them as one checklist to clear together.

The recurring cycle then has a monthly and an annual rhythm. Monthly (quarterly in some cantons), the employer reports and remits the source tax withheld, usually keeping a collection commission of about 1 to 2 percent of the tax for the work, with the exact rate set by each canton. Social-security contributions are paid provisionally to the AHV compensation office during the year and reconciled in an annual statement. The 13th salary is ordinary pay, subject to contributions and, for source-taxed staff, annualised in the tariff calculation, though cantonal spreading practice varies. At year end the employer must issue every employee a salary certificate (Lohnausweis, certificat de salaire) summarising gross pay, deductions and benefits in kind, plus a tax-at-source statement for source-taxed staff. Late or missing filings expose the employer to interest, penalties and personal liability. Our guide to hiring your first employee in Switzerland sequences the registration, contract and payroll steps.