Suomi.fi for Service Developers
Go directly to contents.
Responsible for the service Finnish Immigration Service

Citizenship declaration for an adult whose parent is a Finnish citizen

  • Permit or other obligation
  • Nationwide
  • Public service

You can use this declaration to apply for Finnish citizenship if you meet one of the following conditions:

  • You were born abroad outside marriage on 1 June 2003 or later. Only your father is a Finnish citizen.
  • You were born abroad outside marriage on 1 June 2003 or later and you have 2 mothers. Only your non-birth mother is a Finnish citizen.
  • You were born in Finland on 1 June 2003 or later. ...

Do the following


Period of validity

Until further notice

The service is provided by

Finnish Immigration Service

Responsible for the service

Finnish Immigration Service
Text edited by: Finnish Immigration Service
Updated: 4/11/2025