If you're new to Switzerland and hold a B permit, it's important to understand how your tax obligations work. Most expats initially pay withholding tax, but depending on your income and personal situation, you may also need — or want — to file a Swiss tax return.
How are B-permit holders taxed in Switzerland?
Most expats on a B permit pay withholding tax (Quellensteuer). This means your employer deducts tax directly from your salary each month. In many cases, this is your final tax payment.
However, you must file a Swiss tax return in addition to paying at source if your gross income is over CHF 120,000 per year. In some cantons, you may also need to file if you:
- Own property in Switzerland
- Earn additional income (e.g. investments or freelance work)
- Have significant wealth
Not sure whether you are required — or eligible — to file? Use our free B-Permit Calculator to check your canton, civil status, income and assets against the official thresholds in under a minute.
How are C-permit holders taxed in Switzerland?
Once you obtain a C permit, you are taxed like a Swiss citizen. This means you must file a Swiss tax return every year.
What happens if you switch during the year? If you receive your C permit during the tax year, your taxes are usually split: B permit months through withholding tax, and C permit months through a tax return.
Important: Once you move to a C permit, taxes are no longer deducted automatically. You will receive provisional tax bills. Many people choose to make voluntary advance payments to avoid a large tax bill later.
When is filing a voluntary Swiss tax return worth it?
Even if you are not required to file, it may be beneficial to apply for a voluntary tax return (NOV — Nachträglich Ordentliche Veranlagung) if:
- You live in a low-tax municipality. Withholding tax rates are based on an average cantonal rate. If your municipality has a lower rate, filing could reduce your bill.
- You are eligible for high deductions. Pillar 3a contributions, long commuting costs, continuing education expenses, childcare costs.
- You are self-employed. Self-employed individuals have higher maximum amounts for Pillar 3a contributions.
Important: If you apply for a voluntary tax return (NOV), you will generally need to file a tax return every year going forward. Thinking about contributing to Pillar 3a as a B-permit holder? The tax deduction only applies once you file.
Need help understanding your situation?
Swiss tax rules for expats can be complex, especially when deciding whether to file a voluntary tax return, contribute to Pillar 3a, or switch from withholding tax to ordinary taxation. At FIN, we provide a personalised tax assessment to help you determine the most tax-efficient approach for your situation.