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Extra time for Katso users to migrate to Suomi.fi up to 30 April 2021. Save your filings from Ilmoitin.fi by 30 April 2021.

 
If you have used a Katso ID or Katso authorisations to submit tax returns and other filings on Ilmoitin.fi, please note that you will not be able to access your previous and archived filings in the service after 30 April 2021. Save the filings you need to archive from the service before the end of April. Katso services are taken out of use on 30 April 2021. After that, they are replaced by Suomi.fi identification and e-authorisations.
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