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Warning

Fradulent FSIO email in circulation

Updated on 16 Jan 2026

An email is currently circulating which purports to be from FSIO Director Doris Bianchi demanding benefit repayment. This is a phishing (CEO fraud) attempt. The Federal Social Insurance Office NEVER sends this type of email, either to individuals or to institutions. If you receive a phishing email, do not reply and do NOT click on any links it may contain. The National Cyber Security Centre (NCSC) has been notified of the scam FSIO email.

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Methodological principles, analyses and actuarial technical bases

The finances for social security is updated regularly. Here you will find the methodological basis for its preparation as well as analyses of its development. The technical basis for the first pillar is updated regularly. You can find it here together with a methodological description.

Please consult the German, French, or Italian version of this page for detailed documentation and further information.

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Mathematics, Analyses and Statistics
Mathematics Sector