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.
How to make a tax card if you become unemployed or are laid off
How to file a tax return - corporate taxpayer
MyTax instructions for individual and corporate taxpayers
You can request a refund of VAT and pay it back later
New filing deadline is 31 May – you can still file on 1 June
Limited liability company – remember these when filing your tax return
How to file tax return 6B
Did you forget to file something?
How long does it take to process my tax return?
Where can I find a tax card or decision in MyTax?
How to request adjustment of prepayment?
I have filed my tax return but I can’t see it in MyTax. Why?
How do I find the certificate of transfer tax in MyTax?
Frequently asked questions about MyTax