New version of Ilmoitin.fi to be launched on 23 September 2025

During the version upgrade, on 23 September 2025 between 7 am and 9 am, the Ilmoitin.fi website and its software interfaces are temporarily unavailable.

Key changes:

• You can check and submit self-employed businesses income tax returns (Forms 2, 2Y, 2C, 5, 6A, 7K) for tax year 2025.
• Direct transfers of withholding data for 2026
  • You can check and submit:
    • direct transfers of resident pension recipients (VKESSELE)
    • direct transfers of non-resident pension recipients (RVKSSELE)
    • direct transfers of withholding data on wages (VKESSPAE) and
    • data on YEL and MYEL work income (VKTYOSVA) for purposes of the 2026 preassessment.
  • The example materials on the Ilmoitin/IT Developers site have been updated
• The Check feature and the process of having very large files checked
  • The Check (of submitted records) will now require login. This means that users need to identify themselves through Suomi.fi before checking the records. However, no changes were made to the way the Check feature works: for example, there is no requirement for obtaining any authorisations, and like before, Ilmoitin.fi will not send any of the checked files to the Tax Administration.
  • There will now be a background process for files that are large (file size exceeds 10MB when ready for submittal), and this means that the Check feature can no longer be used for instant checking of the records.
• KELA / eSARA
  • Kela will stop accepting eSARA files sent through the Ilmoitin.fi service on 30 September 2025.
  • Kela recommends that all employers who use eSARA files to apply for Kela benefits should start using other e-services instead as soon as possible.
  • The Incomes Register is recommended for large employers,
  • while smaller employers can use either the Incomes Register or the daily allowance and reimbursement service for employers.
  • Read more about the change.
• FATCA
• The permissible values of "IssuedBy", when submitting FATCA / AccountHolder/Individual/TIN abd SubstantialOwner/Individual/TIN numbers, will include other country codes - not exclusively US, as it has been so far. This change will concern reports to be filed for the 2025 reportable year (the change will go into effect 1 January 2026).
• A changeover of the test environment is scheduled for mid-October.
  • Moving on to a new test environment will cause no interruptions, and will not require any action on the taxpayers or filers part.
  • The test environment database will be cleared, so previously submitted test files will no longer appear in the Archive.
• Preliminary plans for changing the Production environment are outlined for end of November or beginning of December.
  • Production environment changeover necessitates downtime for an entire weekend. More precise dates and downtime scheduling will become known later in September.
• No updates to Ilmoitin.fi are planned for the month of November, because at that time we will focus on the Production environments planned changes and updates.