Payroll in Switzerland: Swissdec, occupational pensions, withholding tax

Swiss payroll: a real obstacle course

In Switzerland, managing payroll seems simple at first glance. You pay a salary, deduct a few contributions, and everything should be in order. In reality, Swiss legislation turns this apparent simplicity into a genuine administrative maze. Between occupational pensions (LPP), accident insurance (LAA), withholding tax and Swissdec certifications, every payslip becomes an exercise in precision.

For SMEs, the risk is not just making a calculation error, but finding yourself in breach of the rules without knowing it. Payroll touches everything: taxation, employment law, social insurance and cantonal compliance.

Here is what you need to understand to avoid the most common pitfalls and ensure your employees receive accurate, clear and compliant pay.

Swissdec, the essential compliance standard

Swissdec is not software, but a certification. It guarantees that payroll data submitted to the Swiss authorities meets official standards. In other words, Swissdec-certified software allows you to send AVS, LPP, withholding tax and SUVA declarations automatically and securely.

It is a guarantee of compliance and peace of mind for any SME. Without this certification, you expose yourself to transmission errors, rejected files and sometimes fines.

Sequence, for example, uses a Swissdec-certified HR module, which means that all social insurance and tax declarations are validated by the official system before being sent. You have nothing to download or enter manually.

LPP, or compulsory retirement provision for Swiss employees

LPP covers occupational pensions. It supplements state old-age and survivors’ insurance (AVS) to ensure a sufficient income in retirement.

Every Swiss employer must enrol their employees once they earn more than 22 050 CHF per year (2025 threshold).

LPP contributions are shared between the employee and the employer, generally in equal proportions. But beware: rates vary according to age and the chosen pension fund. This is often where calculation errors creep in, especially when your employees move into a new age bracket or your company grows.

Manual or semi-automated management multiplies the risks. Sequence’s HR module automatically updates LPP rates and age brackets, ensuring the correct deduction in every payroll run. You no longer need to recalculate by hand or anticipate changes.

Withholding tax, an employer’s responsibility

Since the 2021 reform, employers have been responsible for deducting and paying withholding tax for foreign resident employees or certain cross-border workers. This means knowing the cantonal tax scale, the rate corresponding to the employee’s family circumstances and the amount of taxable income.

An error here can have serious consequences, as your company is jointly and severally liable for the amount owed to the tax authorities.

This is one of the most sensitive issues for SMEs: each canton applies its own tax scales, and these scales change regularly.

Sequence automates withholding tax calculations based on the canton and the employee’s category. The ERP applies up-to-date official rates and submits statements directly to the cantonal authorities via Swissdec.

The other components of Swiss payroll

Payroll is not limited to occupational pensions or withholding tax.

It also includes contributions for old-age and survivors’ insurance (AVS), disability insurance (AI), income compensation (APG), unemployment insurance (AC), accident insurance (LAA), and sometimes additional items such as LPP contributions on variable pay, family allowances or deductions for meals and transport.

Each item must be calculated accurately, rounded correctly and included in the annual salary certificate. It is a precise mechanism, and any error results in an adjustment, or even an inspection.

Sequence automatically manages all these social insurance contributions. Every payslip is calculated, checked and archived in accordance with Swiss legislation.

The payroll management challenges facing Swiss SMEs

For a small or medium-sized business, payroll is often the first area to be outsourced.

Founders want to focus on their business, not on payslips. Yet many continue to manage payroll in Excel or with uncertified general-purpose software.

This may work for a few months, but as soon as the second or third employee is hired, errors accumulate: missed contributions, incorrect LPP rates, missing Swissdec declarations.

A digital fiduciary like Sequence avoids these risks by combining software with human oversight.

You benefit from an automated ERP and expert support. Your salaries are paid on time, your social insurance declarations are submitted without errors, and your employees receive clear, compliant payslips.

The modern solution: HR integrated into the accounting service

Today, payroll is no longer managed separately from accounting.

Sequence has developed an HR module integrated directly into its Accounting-as-a-Service offering. Everything is connected: payroll, accounting, VAT and reporting. Every salary change is automatically reflected in the accounting entries, without manual data entry.

This puts an end to duplicate systems, complicated exports and integration errors.

You save time, reduce costs and remain fully compliant with Swiss requirements.

Simplifying payroll means protecting your business

Swiss payroll is not just about numbers. It is about compliance, trust and reputation. A salary paid with an incorrect contribution or tax rate can create mistrust, or even a dispute.

Outsourcing this critical area to a reliable, certified Swiss partner frees you from stress and guarantees accuracy. Sequence combines technology, automation and human expertise to deliver flawless payroll that complies with the law and is always up to date.

Discover Sequence and its Swissdec-certified HR module.

A comprehensive service that manages payroll, accounting and VAT for you.

One fixed price. One point of contact. Zero errors.