Annual Payroll Declaration & Lohnausweis (Salary Certificate)
Swiss employers must issue a Lohnausweis (salary certificate) to each employee annually by 31 January, summarising total compensation, AHV-subject earnings, benefits in kind, Quellensteuer withheld, and pension contributions. The annual payroll declaration (Jahreslohnmeldung) is also submitted to the Ausgleichskasse and cantonal Quellensteuer authority by 31 January.
Who this applies to
- All Swiss employers with employees on payroll
- Companies using employment agencies must also ensure compliance for workers placed with them
- Employers of cross-border commuters (G-permit holders) must report to the canton of work
What to file
Lohnausweis (Form with 15 standardised fields): field 1 (salary), field 2 (allowances), fields 3-5 (irregular benefits), field 6 (company car Privatanteil), field 7 (meal subsidies), field 9 (AHV deductions), field 12 (meals at work), field 13 (other benefits), field 14 (remarks), field 15 (accounting/tax year). Jahreslohnmeldung: total AHV-subject earnings per employee for the year. Quellensteuer declaration: per-employee gross salary, family status code, and Quellensteuer withheld.
How to file
Lohnausweis is issued directly to each employee (paper or digital). Electronic submission of Jahreslohnmeldung via Ausgleichskasse portal (ELM — Einheitliches Lohnmeldeverfahren — is the standardised electronic payroll reporting format supported by most Swiss payroll software). Quellensteuer declaration via cantonal tax authority portal.
Payment due
No payment due at this point — this is a reporting obligation. Any underpayment identified in the annual reconciliation is settled with the Ausgleichskasse separately.
Penalties for missing this deadline
Failure to issue Lohnausweis prevents employees from filing their personal tax return correctly — can lead to employee complaints and cantonal enforcement. Late or incorrect Jahreslohnmeldung triggers queries from the Ausgleichskasse and potential interest on any underpaid AHV. For Quellensteuer employers, incorrect declarations can result in assessments plus interest.
Filing checklist
- Full payroll register for the year showing each month's gross salary per employee
- List of benefits in kind (company car Privatanteil, meal subsidies, health insurance contributions etc.)
- AHV contributions paid for each employee throughout the year
- Quellensteuer withheld per month for each foreign-national employee
- BVG Pensionskasse contributions for each employee
- Completed Lohnausweis for each employee (verify all 15 fields)
- ELM file generated from payroll software for Ausgleichskasse submission
Common mistakes to avoid
- Not declaring benefits in kind (company car Privatanteil at 0.9% per month, subsidised meals, employer health insurance top-ups) on the Lohnausweis — a common audit target
- Using the wrong Quellensteuer tariff code (family situation) for employees — each code A/B/C/H corresponds to a different family situation and using the wrong one results in over- or under-withholding
- Issuing the Lohnausweis after the 31 January deadline, causing employees to miss their personal tax return deadline
- Not switching foreign employees to Quellensteuer or from Quellensteuer to standard assessment when their permit status changes during the year
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