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User´s guide

User's guide for the Katso system

Go to Precise information Katso - detailed instructions to look for detailed instructions (including Katso ID setup, passwords, authorizations, using e-services for the first time) for Katso users.

Katso instructions for the following taxpayer groups

The Katso ID gives you access to e-filing and e-services. For a complete list of available services go to List of available e-services.

The URL of Katso is yritys.tunnistus.fi.


Glossary

Go to Glossary to look up important tax concepts and terminology.

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