You can convert your partnership registered before 1 March 2017 into a marriage by notifying the Digital and Population Data Services Agency. The registered partnership will continue as a marriage from the date we receive your notification. At the same time, you can also indicate that you are taking a common surname or a combination of surnames. There is no marriage ceremony associated with the no ...
Fill in the form and sign it together. The form is available in Finnish and Swedish on the Digital and Population Data Services Agency's website.
The service is free of charge.