The Swiss authorities online
New law on names: You can choose a shared family name when you get married, but you are no longer obliged to do so.
Since 1.1.2013, under the new legal provision, both spouses keep their original surnames. They can still choose a shared family name if they want, however. In this case they must choose either the bride or the groom’s surname. In registered partnerships, the couple can also choose one of the partners’ names as a shared family name.
You must inform the authorities, your employer, the tax authorities, your bank and insurance companies, etc.
You need to update the following documents when you change your name:
It is advisable to display your old and new names on your letter box for a few weeks. When you receive a letter or parcel addressed to the old name, inform the sender in writing that you have changed your name.