What is Quellensteuer?
Quellensteuer is Switzerland's withholding tax on employment income paid to foreign nationals who do not hold a C permit (permanent residence) or are not Swiss citizens. It is withheld by the employer from salary at source, at cantonal-specific rates, replacing the normal self-assessment income tax obligation for the affected employee.
Current Rate (2025)
Cantonal-specific rates applied to gross salary. Varies significantly by canton, marital status, number of children, and income level. Rates typically range from 4% to 40% of gross salary.
Example
A German national on a B permit working in Zurich earns CHF 120,000 gross annually. Their Zurich employer withholds Quellensteuer at approximately 22% (CHF 26,400), remits it to the cantonal tax authority, and the employee generally has no obligation to file a standard tax return.
How Quellensteuer works in Switzerland
Quellensteuer is a separate withholding income tax system from the normal Swiss resident self-assessment system (Steuererklärung). It was designed to simplify tax collection for foreign workers on temporary or limited permits.\n\n**Who is subject**\nForeign nationals in Switzerland who hold:\n- B permit (Aufenthaltsbewilligung — annual residence)\n- L permit (Kurzaufenthaltsbewilligung — short-term residence)\n- G permit (Grenzgängerausweis — cross-border commuter)\n- Asylum seekers with certain permit types\n\nForeign nationals who hold a C permit (Niederlassungsbewilligung — permanent residence) or who are married to a Swiss citizen are NOT subject to Quellensteuer — they file a normal tax return.\n\n**Nachträgliche ordentliche Veranlagung (subsequent ordinary assessment)**\nSince 2021, foreign employees can request a subsequent ordinary assessment (NOV) if:\n- Annual gross earnings exceed CHF 120,000 (mandatory)\n- They have significant additional income (rental, investment, foreign income) not covered by the Quellensteuer deduction\n- They believe the flat Quellensteuer rate was too high vs their actual tax liability (and want a refund)\n\nFor the mandatory NOV (>CHF 120,000), the normal tax return process applies and Quellensteuer payments are credited against the final assessment.\n\n**Employer obligations**\nEmployers must:\n1. Register with the cantonal tax authority as a Quellensteuer-pflichtiger Arbeitgeber\n2. Use the applicable cantonal tariff tables (code A, B, C, H etc. for different family situations)\n3. Withhold the correct amount monthly\n4. Submit monthly or quarterly declarations and remit the withheld amount\n5. Issue each employee an annual certificate (Lohnausweis) showing gross salary and Quellensteuer withheld\n\n**Business risk**\nFor SME founders who hire international employees, incorrect Quellensteuer classification or calculation triggers cantonal audits and penalties. The complexity arises because each of Switzerland's 26 cantons has its own tariff table and filing calendar.
Related terms
AHV (Alters- und Hinterlassenenversicherung), IV (Invalidenversicherung), and EO (Erwerbsersatzordnung) are the three main Swiss federal social insurances. Together, they provide old-age/survivors pensions, disability insurance, and income replacement during military service or maternity leave. The combined contribution rate for employed persons is 10.6% employer + 10.6% employee = 21.2% of gross salary. Self-employed persons pay the full amount themselves at a slightly lower combined rate.
A GmbH (Société à responsabilité limitée / Società a responsabilità limitata) is Switzerland's most common private limited company form. It requires a minimum share capital of CHF 20,000, all of which must be paid up on formation. Liability is limited to the company's assets. It is governed by the Swiss Code of Obligations (OR/CO), Articles 772–827.
An AG (Société anonyme / Società anonima) is Switzerland's public limited company form. It requires a minimum share capital of CHF 100,000, of which at least 50% (minimum CHF 50,000) must be paid up on formation. Shares can be issued as registered shares (Namenaktien) or bearer shares (Inhaberaktien, now restricted). Governed by OR Articles 620–763.
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