Denmark’s Airbnb tax checks have recovered millions of kroner from hosts who failed to report rental income correctly, after the Danish Tax Agency (Skattestyrelsen) expanded its control of short-term rental platforms and found errors in almost all reviewed cases.
A targeted tax push found errors in most Airbnb cases
The Danish Tax Agency has collected DKK 32.8 million (around €4.4 million) from Airbnb hosts who had not paid the tax they owed on rental income, according to Danish media reports based on access-to-documents material.
In 2025, the agency carried out 2,406 checks on selected Airbnb hosts’ tax affairs. Errors were found in 98% of the cases reviewed, a figure that points less to occasional mistakes than to a wider compliance problem in Denmark’s short-term rental market.
The checks were not random. Tax authorities focused on cases where platform information could be compared with what residents had declared in their annual tax assessment. When the two sets of data did not match, the discrepancy could trigger a formal control.
Automated Airbnb data made more tax controls possible
The increase in enforcement was made possible by what the Danish Tax Agency described as a new and more automated solution. The system compares information from digital platforms such as Airbnb with the income reported by citizens.
This has allowed the agency to examine “significantly more cases than before,” according to the Danish reporting. The approach reflects a broader shift in European tax administration: digital platforms now generate data that can be used to detect undeclared income more efficiently than traditional audits.
For Denmark, where digital public administration is already highly developed, the Airbnb controls show how tax compliance is increasingly being monitored through automated cross-checks rather than only through manual inspections.
Danish Airbnb hosts must pay tax above the allowance
The Danish Tax Agency stresses that income from renting out a home is taxable once it exceeds the applicable allowance. In some cases, hosts may also have to pay VAT.
For short-term rentals of less than four months, the standard allowance is DKK 35,100 (around €4,700). The exact allowance depends on several factors, including whether the rental is short-term or long-term, and whether the host uses a digital platform that reports income to the authorities.
Hosts can also choose an accounting-based deduction, which allows documented expenses to be deducted from rental income. This option can apply to both short-term and long-term rental, but the calculation varies depending on whether the person owns the home, is a co-operative shareholder, or rents the property.
Short-term rentals are becoming harder to keep informal
The Danish case highlights a tension found across many European cities: short-term rental platforms have made it easier for households to earn extra income, but they have also created new challenges for tax authorities, housing policy and urban regulation.
In Denmark, the issue is not only whether Airbnb hosts pay the correct amount of tax. It also concerns how public authorities can keep pace with platform-based income, where transactions may appear informal to users but remain subject to ordinary tax rules.
The scale of the errors found by the Danish Tax Agency suggests that clearer guidance and stronger reporting systems may become increasingly important. For hosts, the message is direct: income from Airbnb is not outside the tax system, and digital platform data can now make undeclared earnings easier to detect.
Denmark’s Airbnb controls reflect a wider European tax shift
Denmark’s enforcement push fits into a wider Nordic and European pattern in which governments are using digital tools to regulate the platform economy. Under the EU’s DAC7 tax transparency rules, digital platform operators must report information on sellers and income to tax authorities, while taxation itself remains governed by national rules.
The same mechanisms that make platforms efficient for users also make them more visible to tax authorities. For Airbnb hosts, this means that short-term rental income is likely to face closer scrutiny in the coming years.
For public authorities, the Danish experience shows how automated data comparison can turn platform regulation from a legal principle into a practical enforcement tool. It also signals that the informal character of home-sharing is becoming less compatible with undeclared income in an increasingly data-driven tax system.
