Ilmoitin e-service
Ilmoitin.fi service outage on September 22, 2026
The Ilmoitin.fi service and the ApitamoPKI interface will be out of service on September 22, 2026 from 7 am to 9 am due to a version update.
What does this website do for you?
Ilmoitin.fi is a web gateway for electronic submittal of software-generated tax filings that are set up according to the specified formats. There are no fillable web forms available at this site.
Use this website service to
- submit tax returns and other filings in electronic format
- browse your earlier filings
- run a check for making sure that the file format is correct
How to sign in?
Log in to Ilmoitin.fi on the web with your personal e-bank codes, with a mobile certificate, with a smart card, Hightrust.id or foreign identification methods.
Log in to the Ilmoitin.fi service
What filings can you send?
The Data format specifications page describes the messages that can be sent per data stream.
On the page Identification methods, authorisations and representation rights, you can find information on the identification and authorisation requirements per data flow.
Test environment
Go to the test environment from the Test Environment page.
ApitamoPKI
You can find information about the ApitamoPKI interface for the notifier at ApitamoPKI:s webbplats.