We are upgrading the MyTax e-service. Due to the upgrade, the service is down from Saturday 16 May 6.30 am to Monday 18 May 8 am. Please take care of your tax matters before the service break. Read more

IT developers

The Tax Administration offers developers a number of technical interfaces for electronic filing of tax returns and notices. This page contains interface descriptions, specific instructions for different e-services and invitations to events and shared sessions for software developers.

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Newsletter

We also offer a special newsletter for software developers (in finnish). This is a way to keep yourself informed of latest news, upcoming changes and various revisions or changes concerning the Tax Administration’s services.

You can sign up for our newsletter to either your company’s e-mail address or your private e-mail. No fees are charged.

If you no longer wish to receive newsletters, you can click the Subscribe button any time to cancel the newsletter, or alternatively click the link on the newsletter’s last page.

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News

Page last updated 11/7/2023