The Swiss authorities online
Same-sex couples can have their relationships legally recognised as ‘registered partnerships’, which confer rights and obligations to both partners and change their civil status to ‘in a registered partnership'.
To enter into a registered partnership:
Once you have completed the application, you can register your partnership at the civil register office of your choice either straight away or within three months.
The cost of registering a partnership is between CHF 400 and CHF 500.
A marriage between two persons of the same sex concluded abroad is recognised in Switzerland as a civil partnership.