Translations:Avoin yhtiö/7/en

You need a written partnership agreement (yhtiösopimus). File the founding notification with the trade register within three months of signing that agreement. If you file late, the founding lapses and the partnership is not created. From 1 January 2026 the notification is electronic only. PRH states the processing fee on its founding page (300 euros at the time of that page; confirm before you pay).