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New version of Ilmoitin.fi to be launched 4 February 2025

 

From 7 am to 9 am on 4 February 2025, service is down and both the www.ilmoitin.fi website and its software interfaces are temporarily unavailable.

Key changes:

  • Ilmoitin.fi accepts income tax returns for corporate taxpayers 2025 accounting periods. Users can both check and submit returns (Forms 4, 6, 6B, 6C and 6U).
    • In addition to the annual changes, there have been other changes to the following data format specifications: 4, 6, 6B, 6U, 8A, 67A, 67Y.
    • 79 and 79A have been removed.
    • Attachment type "Muu liite" changed to "Vapaamuotoinen liite" (=free-form attachment).
    • New attachment type: "Muu tilinpaatosasiakirja vain Verolle" (= Tax Administration - Other document for financial statement).
    • Data format specifications are available on vero.fi.
  • The data format specifications for annual information returns for the 2025 reporting year are published on 3 February, but their formats will not be available until the March version of Ilmoitin.fi is launched on 25 March 2025. The specifications are available on vero.fi.