Swiss tax at source in payroll accounting

Tax at source is a central part of payroll and human resources in Switzerland for employees without a settlement permit C.

9 February 2024 by Rodolfo Intaglietta

Last updated: 13 October 2026

Information

Entry level

Payroll accounting

8 min

Key facts Starting point Definition Legal basis Employer obligations Challenges FAQ Key takeaways

About the author

A competent tax advisor stands in a modern fiduciary office, ready to provide client-focused advice.

Rodolfo Intaglietta

Managing Director | CEO

Rodolfo Intaglietta is the founder and managing director of ONE! Treuhand GmbH. As a Treuhänder mit eidg. Fachausweis (Swiss fiduciary with Federal Diploma of Higher Education) and Diplomierter Experte in Rechnungslegung und Controlling (Expert in Accounting and Controlling with Advanced Federal Diploma of Higher Education), he supports entrepreneurs throughout Switzerland with clear figures, digital processes and personal advice on an equal footing.

The qualification “eidg. diplomierter Experte in Rechnungslegung und Controlling” corresponds to qualification level NQF 8 and is therefore at the highest level of education, comparable to a doctorate in terms of professional depth and responsibility.

Key facts about this article

Summary

Tax at source is deducted directly from wages and paid by the employer to the cantonal tax authorities. It applies to employees without a settlement permit C and to persons without residence in Switzerland who work here. The aim is simplified and correct taxation of income from employment in Switzerland.

What you will learn:

What tax at source in payroll accounting is
Which persons are subject to tax at source
Which legal bases apply
How tax at source is calculated
Which obligations employers have
Which challenges exist in payroll and human resources

Prerequisites

Basic knowledge is sufficient

Tools you need:

Payroll system
Current cantonal tax at source rates
Salary certificates
Employee master data

Updated on 22 August 2026. We reviewed the group of persons subject to tax at source, the final-tax effect, the legal bases and the tariff codes. Two points were corrected. What matters is not the Swiss passport but the lack of a settlement permit C: anyone who receives the settlement permit is taxed in the ordinary procedure from the following month. And tax at source only replaces income tax; social insurance contributions are not included in it. We added the legal bases (Art. 83 ff. DBG, QStV, StHG), the tariff codes A to H and L to P, and the threshold of CHF 120,000 for the mandatory subsequent ordinary assessment. Still valid without change: the deduction directly from gross salary, payment by the employer to the cantonal tax authority, the consideration of marital status, number of children and canton, and the obligation to update changes in personal circumstances.

Tax at source in payroll accounting

Tax at source applies to employees without a settlement permit C who have their tax residence or stay in Switzerland, and to persons without residence in Switzerland who work here. What matters is the permit, not nationality. This tax is deducted directly from wages and paid by employers to the competent cantonal tax authorities.

Tax at source is intended to simplify the taxation of persons without residence or habitual abode in Switzerland and to ensure that their income from work in Switzerland is taxed appropriately.

Definition of tax at source

Tax at source is an integral part of the Swiss tax system, especially for employers who employ foreign workers.

It affects persons who work in Switzerland but do not live here (such as cross-border commuters), and persons who live in Switzerland but do not have a settlement permit C (residence permit B or L).

Tax at source is calculated on gross income and replaces the income tax that would otherwise be assessed in the ordinary procedure. Social insurance contributions are not included: AHV, IV, EO, ALV, occupational pension provision and accident insurance are settled in addition and independently.

Legal basis and calculation

At federal level, tax at source is governed by Art. 83 ff. DBG and the Tax at Source Ordinance (QStV). For cantonal and municipal taxes, the Tax Harmonization Act and the cantonal tax laws apply. The current rules stem from the revision of tax at source that came into force on 1 January 2021.

The specific rates and calculation methods can therefore vary considerably. The calculation is based on factors such as gross income, marital status, number of children and the canton in which the employee works.

Which rate applies depends on the tariff code: A for single, divorced, separated and widowed persons, B for married persons with one earned income, C for married persons with two earned incomes, H for single parents, G for replacement income. For cross-border commuters, codes L to P apply.

Employers must keep themselves continuously informed about the rates and rules in force in their canton.

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Scope of application and employer obligations

Employers are responsible for calculating and paying tax at source correctly.

They must take into account changes in the employees’ personal circumstances that require an adjustment of tax at source, such as marriage, divorce or the birth of children.

Employers are also required to prepare annual salary certificates for employees taxed at source, containing all relevant information on salary and the tax at source deduction.

Challenges in payroll and human resources

Managing tax at source is a considerable challenge for payroll and human resources.
Employers must take into account cantonal changes in the law, international tax agreements and questions of double taxation.
These requirements can be complex, especially for smaller companies or businesses with many employees subject to tax at source.

In this environment, we as a fiduciary firm offer specialized services to support employers in applying tax at source correctly, complying with legal requirements and optimizing payroll processes.

Frequently asked questions

Who is subject to tax at source in Switzerland?

Employees without a settlement permit C who have their tax residence or stay in Switzerland are subject to tax at source, as are persons living abroad who work in Switzerland. What matters is the permit, not nationality.

How is the amount of tax at source calculated?

The calculation is based on gross income, marital status, number of children and the competent canton with its specific rates.

What obligations do employers have regarding tax at source?

Employers must calculate tax at source correctly, deduct it from wages, pay it to the tax authorities and prepare annual salary certificates.

Can persons subject to tax at source apply for an ordinary assessment?

Yes. Anyone subject to tax at source can apply for a subsequent ordinary assessment. It is mandatory from a gross income of CHF 120,000 in the tax year. Persons with a settlement permit C are not subject to tax at source at all.

Key takeaways

Tax at source is deducted directly from gross salary.
It applies to employees without a settlement permit C. Regardless of nationality, this also includes Swiss citizens without residence in Switzerland.
The calculation is based on cantonal rates.
Employers are responsible for deduction and payment.
Changes in personal circumstances must be taken into account.

Tax at source is an essential part of the Swiss tax system for employees without a settlement permit C. It allows efficient taxation through direct deduction from wages. Employers bear central responsibility for applying, adjusting and paying tax at source correctly. Because the rules are complex, expertise is required, and fiduciary firms can provide valuable support.

Sources

Schweizerische Eidgenossenschaft. (1 January 2026). Bundesgesetz über die direkte Bundessteuer (DBG, SR 642.11), Art. 83–89a. Retrieved 22 August 2026 from fedlex.admin.ch
Schweizerische Eidgenossenschaft. (1 January 2025). Quellensteuerverordnung (QStV, SR 642.118.2), Art. 1 and 9. Retrieved 22 August 2026 from fedlex.admin.ch
Eidgenössische Steuerverwaltung ESTV. (2019). Kreisschreiben Nr. 45: Quellenbesteuerung des Erwerbseinkommens von Arbeitnehmern. Retrieved 22 August 2026 from estv.admin.ch
Kanton Zürich, Kantonales Steueramt. (2026). Quellensteuer. Retrieved 22 August 2026 from zh.ch

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