Double surnames permitted again

Spouses will once again be able to use a double surname from the new year. At its meeting on 21 October 2026, the Federal Council decided that the corresponding amendment to the Swiss Civil Code (CC) would enter into force on 1 January 2027. During a transitional period, however, identity documents may continue to be issued with an alliance name that differs from the official surname.

Background and legal position

When marrying, spouses often wish to keep their existing surnames. At the same time, they frequently wish to use their surname to make visible their connection to each other and to their children together. However, double surnames are not permitted under the current law, which has applied since 2013. People wishing to marry must decide whether to retain their respective surnames or use a shared family name. Their only other option is to use a non-official alliance name (an unofficial hyphenated double surname).

Rules from 2027

From 2027, spouses will once again be able to use a double surname. Double surnames may now be used with or without a hyphen. However, double surnames will remain excluded for children. At its meeting on 21 October 2026, the Federal Council decided to bring the corresponding amendments to the Swiss Civil Code (CC) into force. The necessary amendments to the Civil Status Ordinance (ZStV) are currently being prepared and are expected to be adopted by the Federal Council in November.

Transitional period for alliance names

From the new year, people who are already married may declare to the civil register office that they wish to use an official double surname in future. In future, it will no longer be possible to include an alliance name that differs from the official surname in a passport or identity card. However, the Federal Council has decided that it will remain possible to enter the alliance name in identity documents during a transitional period. This will allow the authorities to make the technical adjustments necessary for the change.

Outstanding points

The Federal Council has not yet determined the length of the transitional period. After consulting the competent authorities, it will bring the corresponding amendment to the Identity Documents Act (AwG) into force in due course. The public and the authorities will be informed of the end of the transitional period well in advance.

Sources

Swiss Civil Code (Double surnames on marriage) (BBl 2026 802)