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Foreign companies: How to grant an authorisation for tax matters

A representative of a foreign company can use MyTax and other e-services on the company’s behalf if they have a Finnish personal ID or a foreign individual’s unique identifier UID (Finnish Authenticator app) as well as a Suomi.fi authorisation.

The representative must request the UID and the Suomi.fi authorisation separately. If a Finnish Business ID has been issued to the foreign company, request the Suomi.fi authorisation using that Business ID.

  • 1

    Request UID

  • Register in the e-identification service

    Read the instructions on the Suomi.fi website. Register in the foreign individual’s e-identification service to get your personal UID.

  • Download mobile application

    Go to the app store on your smartphone and download the Finnish Authenticator app.

  • Submit your details on the app

    You can identify yourself to the Finnish Authenticator app by submitting a photo of your face (selfie) and a photo of a proof of ID, such as your passport or official identity card.

  • Use the app for authentication

    When you receive a notification that your Finnish Authenticator can now be used for identity authentication, you can request Suomi.fi authorisation.
  • 2

    Make a request for authorisation

  • See what type of authorisation you need

    There are different types of Suomi.fi authorisations for different situations. The “Managing tax matters” authorisation allows you to take care of all of the company’s tax matters. The “Filing tax returns” authorisation, on the other hand, only allows you to file tax returns on the company’s behalf. Click the link on the header to read more about the authorisation types.

  • Who makes the authorisation request?

    The request for authorisation can be made by a party who has the right to represent the company, for example. The authorisation request must be signed by a party who has the right to sign for the company. The parties with the right to sign for the company are listed in the company’s trade register extract. A certified copy of the extract must be enclosed with the request. The authorisation request can concern either a right to grant authorisations or a representative’s right to grant authorisations.

  • Right to grant authorisations

    A right to grant authorisations must be requested for the matters that the company must take care of using the e-services. The right of authorisation can be registered to one or multiple individuals. Individuals with the right to grant authorisations can log in to the Suomi.fi authorisation service and grant an authorisation either to themselves or to a company employee or an accounting firm. For example, the authorisation can allow the authorised party to use Tax Administration e-services on the company’s behalf.

  • Representative’s right to grant authorisations

    Representative’s right to grant authorisations can be requested for an individual who represents a company or organisation that has been authorised by another individual, company or organisation. When an individual has the representative’s right to grant authorisations, they can grant authorisations to other individuals to act on the behalf of the company or organisation that they represent. These individuals can then act in the name of the company or organisation they represent to take care of matters on the behalf of the party that authorised their company or organisation.

  • Fill in the authorisation request form

    Fill in the authorisation request form on the Suomi.fi e-service and print it out. Please note that if a Finnish Business ID has been issued to the foreign company, the selection you should make in the e-service is Foreign company or organisation with a Finnish business ID. Send the request by post along with a trade register extract certified by an official authority as well as other necessary enclosures. Click the link on the header to get more detailed instructions on Suomi.fi.

  • Your request will be processed

    You will be notified by e-mail when the requested right to grant authorisations has been registered.

  • Grant an authorisation to yourself or to a company employee or an accounting firm

    After the right to grant authorisations or representative’s right to grant authorisations has been registered, you can manage the company’s authorisations. Log in to the Suomi.fi authorisation service with your Finnish Authenticator app. In the e-service, you can grant Suomi.fi authorisations on the behalf of the company you represent. For example, you can grant the authorisation for managing tax matters to yourself or to a company employee or an accounting firm. If you want to authorise an employee to act on the company’s behalf, they must have a Finnish personal ID or a UID.
  • 3

    Use e-services for tax matters

  • Log in to MyTax

    If you have a Finnish Authenticator app and a Suomi.fi authorisation, you can log in to MyTax and other Tax Administration e-services and use them to take care of a company’s tax matters.
Page last updated 12/16/2022