Death estates with a Business ID: how to grant a authorisation for managing tax matters

An estate of a deceased person must always have a Business ID in order to authorise other individuals or companies to take care of the estate’s tax matters on its behalf. However, estates of deceased persons cannot be issued a Business ID only for the purpose of getting a authorisation mandate.

Many estates already have a Business ID because it has been necessary for other purposes such as the operation of agriculture, or for other reasons. Alternatively, an estate that conducts business, etc. can submit an application for a Business ID to be issued to the estate. At present, an estate that does not have a Business ID must use paper forms for its tax matters.

You will need personal online banking codes, a mobile certificate or a certificate card for using e-services.

How to request and grant authorisations on


Select one or multiple authorisations

The “Managing of tax affairs” authorisation enables the authorised party to take care of all of the authorising party’s tax matters. Other authorisations only cover certain individual matters.

Read the authorisation descriptions to see which authorisation fits your needs

You will be able to select the authorisation later in the e-authorisation service.


Request rights to grant authorisations

First, you must make a request for authorisation in the e-authorisation service. The request can concern either a right to grant authorisations or a representative’s right to grant authorisations.

Request authorisations on

Please note: After your request has been processed and your right to grant authorisations has been registered, you must log in to the e-authorisation service with your personal online banking codes. In the service, you will be able to grant the actual authorisations (described in section 1) that will allow the party you authorise to take care of your tax matters electronically.


Grant an authorisation on

After the request for authorisation has been accepted and you have received the right to grant authorisations, log in to the e-authorisation service.

Grant the required authorisations to the parties you need to take care of the organisation’s tax matters. For example, you can grant an authorisation to yourself or to an accounting firm.

Go to the e-authorisation service

Frequently asked questions

Unfortunately you will not be able to take care of the estate’s tax matters online.

If the estate does not have a Business ID, its tax matters cannot be managed in e-services.

For the time being, you will have to take care of the estate’s tax filing and other matters by using paper forms.

How to declare with paper forms - pre-completed tax return

How to take care of an estate’s taxes