Private individuals: how to grant a Suomi.fi authorisation for tax matters
You can authorise another person or company to take care of your tax matters on your behalf. You can grant a Suomi.fi authorisation for all your tax matters or for a specific tax matter.
If you take care of your underage child’s tax matters in MyTax, you do not need an authorisation. The e-authorisation service checks the Population Information System to see if you have a guardian’s right to manage the child’s tax matters.
To log into the e-services and to give a Suomi.fi e-authorisation to someone you need personal e-bank codes, a mobile certificate or a certificate card. If you cannot login as you do not have any of the above, you cannot authorise another person or company to handle your taxes through electronically provided services. In this case, you can complete and sign a letter of authorisation on paper. Give the letter to the person or company to let them represent you. Then they can submit tax forms on paper on your behalf, contact the Tax Administration’s telephone service to handle your taxes, and visit the tax office on your behalf.
How to grant an authorisation on Suomi.fi
Select one or multiple authorisations
The “Managing of tax affairs” authorisation allows the authorised party to see, edit and file all your tax data in all Tax Administration service channels (MyTax, tax offices, telephone service). The authorised party can also change your bank account number in MyTax. Other authorisations only cover certain individual matters.
You will be able to select the authorisation later in the Suomi.fi e-authorisation service.
Grant an authorisation on Suomi.fi
Log in to Suomi.fi with your personal online banking codes or by another identification method and grant the authorisation in the e-service.
After you have granted an authorisation on Suomi.fi, it will enter into effect immediately. The authorised party can then log in to MyTax with their personal online banking codes and take care of the authorising party’s tax matters there.