Quellensteuer, explained for EU employers
Quellensteuer is Swiss income tax withheld from salary by the employer and remitted to the canton. It applies to employees who do not hold a C settlement permit. The employer carries the obligation, not the employee.
Most European employers meet Quellensteuer on their first Swiss payslip and read it as one deduction among several. It is something else: an obligation that sits with the employer, and a mistake in it is the employer's to correct.
Who it applies to
Quellensteuer applies to employees resident in Switzerland who do not hold a C settlement permit, and to some employees resident abroad who work in Switzerland. In practice, for a company hiring its first person in Switzerland, that is nearly everyone.
The permit is what decides it, not nationality and not salary.
| Permit | Taxed how |
|---|---|
| L, short-term residence | Withheld at source |
| B, initial residence | Withheld at source |
| C, settlement | Ordinary assessment, employee files a return |
Which permit a given hire will hold is a separate question, and one worth answering before the contract is drafted rather than after. The permits page covers the three types and who qualifies for which.
Who withholds it
The employer. Each month the employer calculates the withholding, deducts it from gross salary, and remits it to the tax authority of the canton the employee lives in.
That last part surprises people. The relevant canton is the one the employee is resident in, not the one the company is registered in. Two employees on identical salaries, living either side of a cantonal border, are withheld at different rates and remitted to different authorities.
Cantonal tariffs change annually. An employer running Swiss payroll needs a process for picking up the new tables each year, not a spreadsheet copied once and left alone.
What the tariff code depends on
The amount withheld is read from a cantonal tariff table, selected by a tariff code. The code encodes the employee's circumstances rather than the employer's:
- marital status, and whether a spouse is also earning
- the number of children the employee is entitled to claim
- whether the employee is a member of a recognised church, in cantons that levy church tax
The employer needs these facts to run payroll correctly, which means collecting them at onboarding and keeping them current when they change. A birth or a marriage changes the code, and the employee will not necessarily think to say so.
What changes with a C permit
When an employee obtains a C settlement permit, withholding stops. From the following tax period the employee is assessed in the ordinary way and files a return, and the employer's obligation ends.
The transition is a payroll event. It is worth tracking permit expiry and renewal dates for exactly this reason, alongside the notice periods that also turn on dates the employer is expected to know.
What this means if you use an employer of record
The obligation follows the legal employer. Where Anstell is the employer of record, Anstell registers with the cantonal authority, calculates the withholding from the published tariff, remits it monthly, and files what the canton requires. The client company directs the work and is not in the withholding chain.
Common questions
Does Quellensteuer apply to an employee with a C permit?
No. A C settlement permit holder is taxed through an ordinary assessment and files a tax return, so the employer does not withhold.
Who is liable if too little is withheld?
The employer. The withholding obligation sits with the employer, which is why an employer of record takes it on as part of the payroll it runs.