Pre-completed tax return

You will receive your tax return in MyTax and by post in March. Check the contents of the tax return and make any corrections by the due date stated on the return. This year’s filing deadlines are in April: 15, 22, and 29 April 2025.

Self-employed business operators and agricultural operators as well as their spouses receive their tax returns in late February or early March. The deadline for corrections to these returns is 1 April 2025.

Report in advance

You can use MyTax to submit information related to 2024 tax assessment in advance. Information submitted in advance will be already included in your pre-completed tax return in March. 

Avoid back taxes – request an additional prepayment

If you received capital gains or other such income in 2024, you can request an additional prepayment. If you make an additional prepayment, you can reduce the amount of back taxes and the interest calculated on them.

Instructions for making the request

How to file the tax return

See the instructions on how to file the tax return in MyTax or with paper forms. 

Instructions for filing

Receipts and attachments

You do not need to attach receipts to your tax return. However, keep the receipts relating to household expenses and sales of property, for example, because we may ask for them later.

Receipts and other documentation

Tax refund

The tax refunds for 2023 have been paid.

Refunds for 2024 will be paid to most individual taxpayers in August 2025. You will see the refund amount and the payment date in your tax decision or in MyTax in the spring.

Tax refund

Back taxes

Tax year 2023: Check the final due dates for back taxes

Tax year 2024: You will see the amount of any back taxes and the payment dates in your tax decision or in MyTax in the spring.

Back taxes

Year of tax return

  • 1

    You will receive your tax return in March

    We collect information that affects your taxation from your previous year's tax card and from employers, pension institutions and banks, for example. Based on this information, we create a pre-completed tax return for you and send it to you in March. 
  • 2

    Check the information and make corrections

    Check the information on the tax return. If all the information is correct, you do not need to do anything. If you make corrections, the filing deadline is 1, 15, 22 or 29 April. You can check the due date on your tax return and in MyTax. 

    Making corrections in MyTax or on paper
  • 3

    A tax refund or back taxes?

    Based on your pre-completed tax return and the corrections you have made to it, the Tax Administration will calculate the total amount of taxes and charges. If your tax rate has been too high, you have paid too much tax and will get a tax refund. If your tax rate has been too low, you will have to pay back taxes.
  • 4

    A tax decision is a calculation of taxes

    If you did not make any changes to your pre-completed tax return, the tax decision and payment details you received in the spring will remain in force.

    If you make corrections to your tax return, you will receive a new tax decision by the end of October. In that case, the payment date of your tax refund or the due dates of your back taxes may change. The payment dates may also change if your spouse makes corrections to their tax return.

    Tax decision
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You can take care of most of your tax matters in MyTax.

Go to MyTax

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 1/3/2025