Heiratsstrafe (Marriage Penalty)
Definition
A tax system quirk where married couples are taxed jointly, potentially pushing them into higher brackets.
Key Takeaways
- Heiratsstrafe is a tax penalty where married couples pay more than unmarried couples with same income.
- Most severe for dual-income couples earning similar amounts; can cost CHF 2,000-10,000+ annually.
- Federal marriage penalty declared unconstitutional in 2021; reforms still pending as of 2026.
- Some cantons offer partial relief; penalty affects income tax and AHV social security contributions.
Detailed Explanation
Heiratsstrafe (marriage penalty) is a controversial feature of Swiss tax law where married couples filing jointly can face higher total tax than if they remained unmarried and filed separately. This occurs because Switzerland uses income splitting (dividing combined income by 1.6 for tax calculation), which can push dual-income couples into higher tax brackets. The penalty is most severe when both spouses earn similar high incomes.
For 2026, the marriage penalty can cost couples CHF 2,000-10,000+ annually depending on income levels and canton. A 2021 Swiss court ruling declared the federal marriage penalty unconstitutional, but full reform remains pending. Some cantons have implemented partial relief measures. The penalty affects not just income tax but also social security contributions (AHV rates differ for married vs single). Couples may consider civil partnerships or delaying marriage to avoid the penalty.