1.4 Million Finnish Taxpayers Face April 14 Deadline as Digital Tax Correspondence Launches

For some 1.4 million individual taxpayers, tomorrow, Tuesday, will be the due date for sending back the pre-completed tax return if any corrections had been necessary — as a user of MyTax (OmaVero) you will receive digital messages from Finnish public authorities instead of paper letters

Tax Administration Bulletin, 4/13/2026 The Tax Administration would like to remind you that when you log in to MyTax, you will automatically start receiving electronic tax mail and other correspondence. Due to the newly introduced changes, electronic mailings may take over before the season has ended.

Approximately 1.4 million wage earners and recipients of pensions must remember to check the pre-completed tax return by tomorrow, Tuesday, 14 April. In addition, approximately 2 million real property owners and homeowners need to remember to make corrections and additions to their real estate information on time, as their deadline will also be tomorrow, Tuesday, 14 April.

As an individual taxpayer, you are responsible for checking that all the information recorded on the pre-completed tax return is correct. If the amounts of money and the other information are as they should be, you do not need to do anything. If something is missing or incorrect, you must make corrections and send the corrected tax return back by the due date stated on it.

The due dates vary: 3 different dates in April have been confirmed: 14 April, 21 April and 28 April. These deadlines apply to wage earners, recipients of social benefits, and recipients of pensions. You can see your own due date in MyTax and on the paper version of your pre-completed tax return.

You have to give details on all buildings larger than 5 square metres

The information on the real estate tax decision must also be corrected by tomorrow. No corrections to the details need to be made if the data that concerns your property is in order and up to date. If so, the decision on real estate taxes will remain valid as it is.

If major improvements were made last year, you must inform the Tax Administration of them. Examples include renovations and improvements like new water pipes for a house or building that has had no plumbing before, or sewerage or air conditioning, etc. added.

Since the beginning of 2025, to construct small buildings of less than 30 square metres has no longer required a building permit. However, all buildings larger than 5 square metres must still be declared and subjected to the assessment of real estate tax. In addition, to give details to the Tax Administration is always required when the building has thermal insulation although it might be smaller than 5 square metres.

To provide sufficient information for tax purposes on small buildings is the responsibility of the building’s owner. The Tax Administration does not receive information from the local municipality.

Letters from public authorities will be sent electronically – your tax decision will be available in MyTax

Tomorrow, on Tuesday, several changes to Finnish legislation will come into force. Under the new legal provisions, letters, decisions, etc. from the Tax Administration will only be delivered in electronic format to those who use any e-government service.

“When an individual logs in through the e-identification provided by Suomi.fi to any public e-service, an electronic mailbox be created automatically. After that, any forthcoming official correspondence will go to that mailbox in the Suomi.fi Messages system. However, when a taxpayer is not an e-services user, the Tax Administration will continue to send them their tax-related letters and decisions on paper,” says Joonas Jarva, the Product Owner of MyTax at the Tax Administration.

The Tax Administration will only send out notifications to the mailboxes, not the actual letter that concerns taxes. The letters will only be available in MyTax.

It is possible that your tax mail would change from paper to electronic even before the present season for submitting pre-completed returns comes to a close.

“Like many others, you received the pre-completed tax return on paper in spring. It is possible, if you have logged in to a public e-service – starting 14 April – that the next letter, your tax decision, and perhaps an invoice for back taxes will now be sent electronically”, Joonas Jarva says.

He emphasizes that it is important that citizens should download the Suomi.fi app or remember to visit the Suomi.fi website to give a valid email address, so the notifications from the Tax Administration can reach everyone.

According to projections and estimates, the Digital Priority approach may save tens of millions of euros to the government every year. Its advantages include a more rapid delivery of official correspondence, considerable improvement to data security, and better accessibility because of the electronic formats.

Further information:

• Digital prioritisation: public authorities to primarily send digital messages
• Pre-completed tax return
• Real estate return and real estate tax decision Page last updated 4/13/2026