Swiss Tax Guide

The Tax Guide brings together all the important information about taxes in Switzerland in one place. This includes the latest magazine articles, cantonal filing deadlines, money-saving tips, special topics such as cross-border commuters and foreign income, as well as ongoing tax updates for the respective tax year.

The deadline for filing a tax return in Switzerland depends on your canton of residence. In many cantons, the deadline falls between the end of March and the end of April; an extension is usually possible. You can find a detailed overview of the cantonal filing deadlines in the "Deadlines" section.

In most cantons, you can request an extension of the filing deadline for your tax return—either online or in writing—often free of charge for a specific period. To find out which deadlines apply and how to proceed, see the “Deadlines” section of the guide under “Request an Extension.”

In the 2026 tax year, there will be several changes—including those affecting Pillar 3a, withholding tax rates, the direct federal tax, as well as cantonal reforms and value-added tax. You can find all the latest updates compiled in the Tax Updates section.

Cross-border commuters from Germany, France, or Italy, as well as expats, benefit particularly from the special topics. Key guides cover foreign income, dual residency, moving to and from Switzerland, and the cross-border commuter regulations of the respective countries as they relate to the Swiss tax return.

For married couples and families, it’s worth taking a closer look at child tax deductions, third-party childcare costs, the proper allocation of income and assets, and contributions to Pillar 3a and pension funds. You can find specific strategies in the guide under “Tax Optimization for Married Couples.”

Deductions and flat rates are adjusted every year—both for direct federal tax and at the cantonal level. You can find the current figures—such as those for work-related expenses, child deductions, or Pillar 3a—in the annual articles in the Tax Updates section.

Several sections of our advice guide are relevant to homeownership and real estate: money-saving tips on maintenance costs and mortgages, special topics on energy-efficient renovations, and tax updates on imputed rental value and real estate gains tax. The subpages in the “Tax Savings for Property Owners” section provide a structured introduction to these topics.

It’s best to start with the basics in the magazine and a look at the deadlines in your canton. Next, it’s worth checking out the 10 best tax tips to get an overview of the most important deductions and ways to optimize your taxes. You can then find information tailored to specific life situations in the special topics and savings tips sections.