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Digital threats

Email phishing

Updated on 2 Apr 2026

Phishing emails purporting to be from the Federal Tax Administration (FTA) are currently in circulation. These claim to contain an official notification regarding a refund. Please ignore these emails, do not click on any links they contain, do not disclose any personal data and delete these emails. Further measures can be found on the website of the Federal Office for Cyber Security.

Technical information Top-up Tax

The technical information includes the regulation, OECD publications and practice statements on minimum taxation.

Legal basis

On this page, you will find the federal decree on the special taxation of large corporate groups, the ordinance on the minimum taxation of large corporate groups, consultation documents and further information.

OECD publications

Here you will find links to the OECD publications.

Official statements

On this page you will find the official statements of the FTA and the Swiss Tax Conference (STC).

Contact

If you have any questions, please contact us using the contact form.

Federal Tax Administration FTA
Main Division DAS
Eigerstrasse 65
3003 Berne