Associations: how to grant authorisations

If you are the chair of an association in the Register of Associations or a person entitled to sign for such an association, you can use MyTax, and on behalf of the association without a separate authorisation.

If you are entitled to represent the association alone, you can grant another person or company a authorisation for the association’s tax matters. Your personal ID and official role (authorised signatory) must be recorded in the Register or Associations. You can check the information at the Register of Associations maintained by the Finnish Patent and Registration Office.

Note: An authorised agent cannot change an association’s bank account number in MyTax. The account number can only be changed by a person with an official role recorded in the Register of Associations, such as the association’s chair or representative authorised to sign for the association alone.

Learn more about authorisation for tax matters

Granting an authorisation on

Instructions on Grant a mandate as a company or an organisation

Katso authorisations will be taken out of use

Katso authorisations are no longer valid starting 1 January 2021. If you are currently using Katso authorisations to take care of someone else’s tax matters, you must request new authorisations instead. Your Katso authorisations will not be automatically replaced with authorisations.

When using your authorisation, log in to the e-service with your personal e-bank codes, a mobile certificate or a certificate card. The mobile certificate or certificate card can also be provided to you by an organisation.