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MyTax

MyTax is the Tax Administration’s e-service for most of your tax matters.

You can log in with your online banking codes, a mobile certificate, or a Katso ID. If you wish to act on behalf of someone else, you will need authorisation. You can no longer use Katso IDs and Katso authorisations after 31 August 2021.

Sign in

Instructions

How to make a tax card

The pre-completed tax return – instructions for filing

MyTax instructions for individual and corporate taxpayers

News

  • 2/25/2021 Changes in VAT taxation of e-commerce – the VAT special scheme can be used for all kinds of selling to consumers
  • 2/22/2021 Foreign companies’ representatives with a Finnish Authenticator app and a Suomi.fi authorisation can use e-services
  • 12/9/2020 Extra time for Katso users to migrate to Suomi.fi

Topical issues

Check your pre-completed tax return – check the deadline date in MyTax

Remote working: travel expenses and other deductions

Frequently asked questions about MyTax

Katso ID is being taken out of use.

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