For Swiss companies, January is a key month for payroll and compliance. One of the most important annual obligations is the declaration of employee salaries to the social security authorities and relevant insurance providers, which must generally be completed by the end of January.
Failing to meet this deadline can result in penalties, corrective filings, and unnecessary administrative burdens. Below, we outline why this requirement matters and how companies can ensure they remain compliant.
What must be declared?
Swiss employers are required to declare all salaries paid during the previous calendar year, including:
Gross salaries and bonuses
Benefits in kind (e.g. company cars, housing allowances)
Overtime and variable compensation
Directors’ and officers’ remuneration
These declarations are submitted to social security compensation offices (AHV/AVS), accident insurance providers, pension funds (BVG/LPP), and cantonal tax authorities. Accurate salary reporting is essential to ensure the correct calculation of social security contributions, insurance premiums, and tax liabilities.
Even if a company did not employ any staff during the previous calendar year, this fact must still be formally declared to the relevant authorities.
Salary Certificates for employees
In addition to the annual salary declarations, employers are also required to prepare and issue annual salary certificates to their employees. While there is no single federal deadline, standard practice and cantonal tax expectations require that salary certificates be issued by the end of January, and at the latest by the end of February, in order to allow employees sufficient time to file their personal tax returns.
Why the end of January deadline is critical
The end of January is the standard deadline for submitting annual salary declarations in Switzerland. This timeline enables the authorities to finalise contribution assessments, issue contribution statements, and ensure that individual employee records are correctly aligned for social security and taxation purposes.
Missing or inaccurate declarations may result in late fees or penalties, reassessments or audits, retroactive contribution adjustments, and increased scrutiny from the authorities. The risk of errors is particularly high for companies with international staff, expatriates, or complex compensation structures.
Many companies experience difficulties with salary declarations due to changes in payroll during the year, variable or performance-based compensation models, cross-border employees or directors, or incomplete and inconsistent payroll data. Without proper preparation, January deadlines can quickly become stressful and time-consuming.
How IncoSwiss can support you
At IncoSwiss, we support Swiss companies with accounting, payroll, and compliance services, ensuring that salary declarations are complete, accurate, submitted on time, and fully aligned with Swiss regulations. Our team coordinates directly with compensation offices, insurance providers, and tax authorities, allowing you to focus on your core business with confidence.
If you have not yet finalised your annual payroll declarations, now is the time to act. We can assist you with the completion of salary declarations, the preparation of employee salary certificates, and, where applicable, the request for filing deadline extensions. Please reach out to us to discuss how we can support you.
