One Million Danish Homeowners Hit by Tax Error

Steven Højlund

Writer

December 17, 2025
10:36 pm

Around one million Danish homeowners have been affected by an error that inflated the frozen property tax amount on their 2026 preliminary tax statements, according to Denmark’s Assessment Agency. The agency expects to correct the mistake by late January.

Error in homeowners’ tax statements

Every November, Danes gain access to their preliminary tax assessment for the following year. This year, however, a significant mistake occurred in the calculations for many homeowners. The issue caused their frozen tax amount to appear higher than intended.

According to the Assessment Agency, the mistake affects about one million homeowners. For most, the difference involves relatively small sums, averaging about 3,000 Danish kroner. A revised tax statement with the correct frozen tax amount will be issued automatically.

The agency aims to send out the corrected statements before salaries are paid at the end of January, ensuring no one overpays their property tax. Officials have apologized for the confusion and emphasized that homeowners will not pay more than they owe in property-related taxes.

How the error happened

The mistake originated from an incorrect calculation related to a special supplement that only applies to a smaller group of taxpayers. Instead of being applied narrowly, the system mistakenly extended the calculation to a much larger group. As a result, most of the affected homeowners saw an inflated frozen tax figure on their digital tax overview.

The frozen amount has been visible to taxpayers since November 11. It shows how much of the property tax, such as land tax and the property value tax, can be deferred via a loan in Denmark. Property owners can choose whether to use this loan option until December 31, 2026.

Interestingly, around 36,000 homeowners have already received accurate tax figures. However, the Assessment Agency announced that these too will be recalculated later in 2026 as part of general updates to the system.

Impact on homeowners

Denmark has some of the most structured systems for managing property taxes, but this technical blunder shows how even small coding or data missteps can impact a large number of citizens simultaneously. For homeowners, the frozen amount determines how much of their annual property-related costs can be delayed as a state-backed loan rather than being paid immediately.

Because of the system’s automation, many property owners noticed numbers that seemed surprisingly high once the online statements went live. Some expressed concern that it could affect personal budgeting at a time when cost-of-living pressures remain high in Denmark.

For those considering property financing or looking into a mortgage in Denmark, these tax deferral programs can influence borrowing decisions, especially when projected property values change from year to year.

What homeowners should do

The agency has recommended that taxpayers review their digital tax profiles regularly to spot possible irregularities. Homeowners who notice unexpectedly high frozen amounts do not need to take any immediate action. Updated statements will be generated automatically in the coming weeks.

Meanwhile, Danish tax authorities stress that no one will be financially disadvantaged by the error. Adjustments will take effect before any loan offers linked to the frozen tax amounts are processed.

A reminder of Denmark’s evolving tax systems

This situation highlights how Denmark continues adjusting its digital property valuation and taxation systems after several years of reforms. While automation helps streamline many processes, it also means that a single configuration fault can spread quickly.

Despite this setback, the country’s overall system for handling property tax loans remains one of the more transparent in Europe. The corrections are expected to restore accurate data before the next round of salary payments in January.