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Pre-completed tax return

In March or April 2024, you will receive a pre-completed tax return. If there is no need for corrections or additions in your return, you do not have to do anything.

If you want to make corrections, the deadline for them is 7 May, 14 May or 21 May 2024. You can check the deadline date on your tax return and in MyTax.

Self-employed business operators and agricultural operators as well as their spouses receive their pre-completed tax returns in March. The deadline for corrections to these returns is 2 April 2024.

Go to MyTax

Instructions for filing

When you receive your tax return, this is what you should do:


Check the tax return

Always check all the pre-completed data on your tax return. 


If everything is correct, you do not need to do anything

If there is nothing to add or correct, you do not have to do anything. If you have not made any changes by the deadline date, we will consider that you have submitted your return with the contents that were pre-completed in it.


Correct missing or incorrect details

If there is something that you must add to or correct in your tax return, make the changes in MyTax or file them on paper forms.

See the instructions for filing

The corrections you have made to your tax return in MyTax or on paper forms must arrive at the Tax Administration by the due date stated in your return, at 23.59. You can see the due date on your return’s cover page and in MyTax.

See also instructions for those who submit paper-printed tax forms.

Extended time for filing

You may ask for an extension of time for filing the tax return if you have a valid reason for it. Complete an application form and submit it to the Tax Administration before the deadline date of the tax return.

Log in to MyTax to complete the extension form, or print it out on paper, fill it out, and send it to the Tax Administration.

The Tax Administration can use automated decision-making in the context of resolving tax matters. This means that a decision concerning your tax matter may be based on partial or full use of an automated decision-making system. Read more about automated decision-making at the Tax Administration (only in Finnish).

Page last updated 2/16/2024