One in three Danes face a tax bill when their annual tax statement becomes available on March 23, but most can reduce or eliminate the debt by claiming overlooked deductions before the May 20 deadline. Four key adjustments can make the difference between paying and receiving a refund.
Tax Bills Hit Record Numbers in 2026
New data from Skatteguiden reveals a significant challenge for Danish taxpayers this year. The company analyzed data from more than half a million users and found that approximately one third will owe money when tax statements arrive in late March. Among those facing a tax bill, the average amount reaches 8,440 kroner.
The high number of Danes owing money reflects changes in income, investments, and deductions that were not properly adjusted during 2025. However, tax experts emphasize that many people have not yet claimed all the deductions they are entitled to. This creates an opportunity to turn red numbers into black before the final deadline.
Deductions Provide the Solution
Director Nicolai T. G. Høgskilde from Skatteguiden calls deductions the big joker that can reverse the situation. Many taxpayers overlook legitimate tax deductions available to them. As a result, they face unnecessary tax bills that could be reduced or eliminated entirely.
The company identified four essential areas where adjustments can make a substantial difference. These relate to home services, transportation, and investment income. Each category has specific rules and deadlines that taxpayers need to understand.
Time Remains to Make Changes
The timing creates both urgency and opportunity. Taxpayers can already begin making adjustments through the TastSelv system at skat.dk. They have until May 20, 2026 to submit changes to their 2025 tax return. This window allows people to gather documentation and claim forgotten deductions.
The new tax system that took effect January 1, 2026 adds another layer of complexity. Middle tax brackets, top tax, and super top tax replace the previous structure. These changes affect how deductions translate into actual savings.
Craftsman Deduction Returns as Major Relief
The craftsman deduction came back into effect on January 1, 2025 after an absence. This relief helps homeowners who paid for qualifying work on their primary residence or vacation home during the year. The deduction applies only to labor costs, not materials.
Maximum Benefits and Requirements
Each person can claim up to 9,000 kroner through the craftsman deduction. Married couples or cohabitants can therefore potentially claim 18,000 kroner total if both paid for qualifying work. The relief covers tasks like painting, plumbing repairs, electrical work, and similar home improvements.
Payment method matters significantly for this deduction. All payments must go through digital channels such as debit card, MobilePay, or bank transfer. Cash payments do not qualify. Taxpayers also need documentation showing both the payment and the work performed.
How to Claim the Relief
Claiming the craftsman deduction requires logging into TastSelv and selecting the craftsman and service deduction section. Users then enter information about the work performed and payment details. The system allows additions and corrections through May 20, 2026.
The deduction directly reduces taxable income. At typical tax rates, a 9,000 kroner deduction saves approximately 3,500 to 5,000 kroner in actual tax depending on income level and municipal tax rates. This can eliminate a significant portion of an 8,440 kroner average tax bill.
Service Deduction Offers Even Larger Savings
The service deduction provides an even more generous relief than the craftsman deduction. This covers different types of work performed in homes and vacation properties. Qualifying services include cleaning, gardening, childcare in the home, and similar tasks.
Higher Limits Create Bigger Opportunities
The service deduction reaches 17,500 kroner per person for work performed in 2025. This amount increases to 18,300 kroner for 2026. Like the craftsman deduction, couples can each claim the full amount if both paid for qualifying services.
The same payment requirements apply. All transactions must occur through digital payment methods with proper documentation. However, timing adds an extra consideration for the service deduction. Work performed in 2025 must be paid by February 28, 2026 to count for the 2025 tax year.
Strategic Payment Timing
Payments made after February 28, 2026 get recorded in the year when payment actually occurs. This creates a planning opportunity. Taxpayers facing a large bill can potentially delay payment of services received in late 2025 until after the February deadline. The deduction then applies to 2026 instead.
The claiming process mirrors the craftsman deduction. Users log into TastSelv, select the appropriate section, and enter work and payment details. The May 20, 2026 deadline applies for making changes to 2025 deductions.
Stock Market Gains Create Unexpected Bills
Investment income emerged as a major source of tax bills in the Skatteguiden data. The company found that 65 percent of their users earned money on stocks in 2025. This compares to just 57 percent the previous year. Higher stock market participation means more people owe capital gains tax.
Capital Gains Tax Catches Investors Off Guard
Many investors fail to update their preliminary tax assessment when selling stocks at a profit. The tax system does not automatically adjust for investment gains during the year. As a result, insufficient tax gets withheld from monthly paychecks or pension payments.
Stock income faces different tax rates depending on the amount. Gains up to 79,400 kroner for singles or 158,800 kroner for married couples are taxed at approximately 27 percent. Amounts above these thresholds face roughly 42 percent tax. These rates combine capital gains tax with municipal and health taxes.
Voluntary Prepayment Saves Money
Mathias N. Scheel, communications manager at Skatteguiden, recommends voluntary prepayment for anyone expecting a tax bill. This strategy delivers real economic benefits by avoiding interest charges. Denmark charges day to day interest on outstanding tax debts starting January 1.
The earlier someone pays, the less interest accumulates. A voluntary payment made in February saves approximately four months of interest compared to waiting until the June 1 standard payment deadline. Interest rates on tax debts typically exceed rates paid on regular savings accounts.
Making a Voluntary Payment
The process requires logging into TastSelv and selecting the payment option. Users choose to pay advance tax, then select the option to pay and save interest. The system accepts payments toward expected tax bills even before the official assessment arrives in March.
This approach particularly helps people with large stock gains who know they will owe substantial amounts. A 50,000 kroner tax bill accumulates significant interest over several months. Prepaying eliminates this extra cost entirely.
Transportation Deduction Must Wait Until March
The commuting deduction, also called transportation relief, represents another significant opportunity. However, this deduction follows different timing rules than the others. Taxpayers cannot claim it until after their annual tax statement opens on March 23, 2026.
Why the Delay Matters
The transportation deduction requires information from the completed tax year. The tax authorities need to verify employment status, workplace location, and actual commuting distance. This verification happens as part of the annual tax statement process. As a result, the deduction cannot be added to preliminary assessments.
For the 2025 tax year, employees who commuted more than 24 kilometers each way to work can claim a deduction. The rate varies by distance, with higher per kilometer rates applying to longer commutes. The deduction reduces taxable income directly.
Planning for March Adjustments
Taxpayers should prepare documentation before the March 23 opening. This includes calculating total commuting days, confirming the distance between home and work, and noting any changes in workplace location during the year. Having this information ready speeds up the claiming process.
The May 20 deadline still applies for transportation deductions. This gives taxpayers nearly two months from when statements open to calculate and claim the relief. However, acting quickly in late March allows people to see the impact on their final tax position sooner.
New Tax System Adds Complexity
The 2026 tax reform fundamentally changed how income gets taxed in Denmark. The new system introduced middle tax, adjusted top tax thresholds, and created a super top tax bracket. These changes affect how deductions translate into actual tax savings.
Three New Tax Brackets
Middle tax of 7.5 percent now applies to income between 696,956 kroner and 845,543 kroner before labor market contributions. This creates a 49 percent marginal tax rate in this range when combined with bottom tax and municipal taxes. Top tax continues above 845,543 kroner, raising the marginal rate to 56 percent.
The new super top tax hits income exceeding 2,818,152 kroner. This adds another 5 percent, pushing the marginal rate to approximately 60.5 to 61 percent. The reform raised the top tax threshold significantly from 665,000 kroner in 2025 to 845,543 kroner in 2026.
Impact on Deduction Values
Each deduction saves different amounts depending on which tax bracket applies. A 10,000 kroner deduction saves 4,200 kroner for someone paying only bottom tax and municipal rates. The same deduction saves 4,900 kroner for someone in the middle tax bracket and 5,600 kroner for top taxpayers.
This creates strategic considerations. Higher earners benefit more from the same nominal deduction amounts. However, more taxpayers now fall below the top tax threshold due to the higher limit. Therefore, their deductions save less than in previous years despite reducing the same amount of taxable income.
Acting Before the Deadline
The May 20, 2026 deadline represents the final opportunity to adjust 2025 tax returns. After this date, changes generally require special permission and documentation. The tax authorities only accept late changes in cases of clear errors or newly discovered information.
Gathering Documentation Now
Taxpayers should collect receipts, invoices, and payment confirmations for all potential deductions immediately. Digital payment records from banking apps provide proof of transactions. Invoices from service providers document the work performed and labor costs versus materials.
For craftsman and service deductions, the documentation must clearly separate labor from materials. Only labor qualifies for the craftsman deduction. Invoices that lump everything together may require contact with the service provider to obtain a proper breakdown.
Checking All Categories
Beyond the four main areas Skatteguiden identified, other deductions exist. Union dues, unemployment insurance, and certain professional expenses all qualify. The TastSelv system includes a complete list of potential deductions with explanations of requirements and documentation needs.
Taking a systematic approach prevents overlooking opportunities. Going through each deduction category one by one, even if some do not apply, ensures nothing gets missed. The difference between owing 8,440 kroner and receiving a refund often comes down to claiming all legitimate reliefs.
Sources and References
The Danish Dream: Stop Overpaying Danish Tax Complete Guide to Deductibles
The Danish Dream: Tax Financial Advisors in Denmark for Foreigners
TV2: Hver tredje dansker står til skattesmæk sådan undgår du det
