Successful tax optimization for companies

Updated on 22 August 2026. We reviewed the basics of tax optimization, loss offsetting and the rules for internationally active companies. What has changed since first publication is the international framework: since 1 January 2024, Switzerland has levied a national top-up tax and, since 1 January 2025, also the international top-up tax. With these, groups of companies with annual revenue of EUR 750 million or more are taxed up to 15%. Still valid without change: cantonal differences as a central planning factor, the importance of the legal form, the deductibility of business expenses and loss offsetting over seven years under Art. 67 DBG.

Why tax optimization matters

Tax optimization is an essential part of business management in Switzerland. It allows companies to reduce their tax burden and thereby free up funds for investment, growth and innovation.

In a highly competitive environment, an efficient tax strategy can be decisive.

Basics of tax optimization

A sound understanding of tax law is the basis of any tax optimization. Because tax rules in Switzerland differ from canton to canton, companies need to know their tax obligations and options precisely. Analyzing your own starting position is just as important in order to develop realistic optimization strategies.

The analysis includes a detailed financial review, strategic planning and an assessment of tax risks. These steps help to identify potential and avoid legal uncertainty.

Strategies and measures for tax optimization

Companies can lower their tax burden through various measures. These include the use of all permissible tax deductions, for example for research and development, education and training or investments. Choosing the appropriate legal form can also have a considerable tax impact.

Targeted dividend planning, an efficient capital structure and investments in innovation and sustainability are further instruments of tax optimization. Internationally active companies also need to take cross-border tax aspects into account to avoid double taxation. For large groups of companies, the OECD minimum taxation comes on top: since 1 January 2024, Switzerland has levied a national top-up tax and, since 1 January 2025, also the international one. It applies to groups with worldwide annual revenue of EUR 750 million or more; their profit is taxed up to 15%. For the vast majority of Swiss SMEs, nothing changes.

Losses from the seven preceding financial years can be deducted from net profit (Art. 67 DBG).