Notifications on amendments or termination on paper: forms and instructions

​Companies must file their notifications and applications online with the Finnish Trade Register from 1 January 2026. This does not apply to private traders, associations or foundations.

​Use these Y forms and enclosures:

• if you are filing your notification using the Finnish Trade Register’s online forms or
• if you are filing information with the Finnish Tax Administration’s registers by post. In that case, use the following address: Tax Administration, Business Information System, P.O. Box 2000, FI-00231 Helsinki, Finland.

Use separate personal data form

The details you enter on the form will be publicly available to everyone. When you send notifications, do not include any documents, such as minutes or partnership agreements, that contain personal identity codes, home addresses, or other sensitive details, such as health details.

If you file your notification using our paper forms, file the person’s identification details on a separate personal data form. Do not fill in personal identity codes or home addresses on any other notification forms.

Further information and advice

The PRH advises on matters associated with the Finnish Trade Register, Register of Associations and Register of Foundations. You will find instructions on the prh.fi website.Avautuu uuteen välilehteen

The Finnish Tax Administration advises on tax matters. https://www.vero.fi/en/businesses-and-corporations/ You will find instructions on the vero.fi website.Avautuu uuteen välilehteen 

Shortcut - file changes

Have the details of your company or organisation changed? Would you like to file changes?
Based on your selection, we will guide you to our website (prh.fi), where you will find instructions for filing changes.

Notification on amendments or termination of business: limited liability companies, co-operatives and foundations (Y4)

Forms:

• Notification on amendments or termination of business Y4
• Organisation-specific appendix forms:
• 13 Limited liability companies or public limited companies: most common changes
• 16 Limited liability companies: merger or demerger
• 14A Co-operatives: most common changes
• 17A Foundations: changes (under Act 487/2015 on Foundations)
• Personal data form

Other documents:

• The receipt if you file a notification subject to a fee.

Go to the instructions for filling in form Y4.

Notification on amendments or termination of business: general partnerships, limited partnerships and tax consortiums (Y5)

Forms:

• Notification on amendments or termination of business Y5
• Personal data form

Other documents:

• The receipt if you file a notification subject to a fee with the Finnish Trade Register

Go to the instructions for filling in form Y5

Notification on amendments or termination of business: private traders, self-employed and agricultural or forestry operators (Y6)

Forms:

• Notification on amendments or termination of business Y6
• Personal data form

Other documents:

• The receipt if you file a notification subject to a fee with the Finnish Trade Register

Go to the instructions for filling in form Y6.

Notification on amendments or termination of business: associations, religious communities and chambers of commerce (Y4a)

Forms in English:

• Personal data form

Organisation-specific appendix forms (only in Finnish and Swedish):

• Notification on amendments or termination of business Y4a
• 19A Associations and chambers of commerce: notification of changes
• 19B Religious communities: notification of changes
• 20A Associations and chambers of commerce: notification of dissolution
• 20B Religious communities: notification of dissolution
• Enclosure 6214 of the Finnish Tax Administration

Other documents:

• If you file changes to the association rules, enclose the new rules as a whole.
• The receipt if you file a notification subject to a fee with the Finnish Register of Associations or Register of Religious Communities.

Go to the instructions for filling in form Y4a.