Denmark Business Expenses and Deductions Guide (Driftsomkostninger)

What Counts as a Business Expense (Driftsomkostninger)

Danish tax law defines deductible business expenses as costs incurred to acquire, secure, and maintain business income. The key test is whether the expense is ordinary and necessary for the operation of your business. SKAT evaluates expenses on a case-by-case basis, and the burden of proof falls on the taxpayer.

General principles for deductible expenses:

• Ordinary and necessary test — The expense must be common and accepted in your line of business and appropriate for generating income. Unusual or extravagant expenses are subject to closer scrutiny.
• Direct connection to business — The expense must have a clear, direct connection to your business activities. Mixed-use expenses (e.g., personal and business use of a car) must be apportioned.
• Actual cost incurred — Only actual costs paid or incurred are deductible. Imputed costs (e.g., your own unpaid labour) are not deductible.
• Proper documentation — All expenses must be supported by adequate documentation, including invoices, receipts, contracts, and (where applicable) logs or travel records.
• Danish kroner (DKK) — All amounts must be recorded in DKK. Foreign currency expenses must be converted using SKAT's official exchange rates at the transaction date or at year-end.

Examples of common deductible expenses: rent, wages, raw materials, marketing, professional fees, insurance, office supplies, IT equipment, and travel costs directly related to business operations. See our starting a business guide → for setting up your expense tracking system from day one.

Fully Deductible Expenses

The following categories of expenses are generally fully deductible, provided they meet the ordinary and necessary test and are properly documented:

• Rent and utilities for business premises — Rent for office, shop, warehouse, or other business premises is fully deductible, including heating, electricity, water, internet, and cleaning costs for business spaces.
• Wages and salaries with A-skat — Salaries, wages, bonuses, and commissions paid to employees are fully deductible, provided A-skat and AM-bidrag are properly withheld and reported through eIndkomst. Employer pension contributions are also deductible within tax-free limits.
• Raw materials and inventory — Cost of goods sold, including raw materials, finished goods for resale, packaging, and direct production costs. Inventories must be valued according to Danish accounting standards (lower of cost or net realizable value).
• Professional fees — Fees paid to accountants (revisor), lawyers (advokat), consultants, architects, engineers, and other professionals for business services are fully deductible.
• Marketing and advertising — Website development, search engine advertising, social media marketing, print ads, trade show fees, brochures, and promotional materials. Gifts to customers are deductible only up to limited amounts (see partially deductible section).
• IT equipment and software — Computers, servers, software licenses (SaaS), cloud services, and IT support. Assets below 32,000 DKK (2026 threshold for småaktiver) can be expensed immediately; larger assets must be depreciated.
• Travel costs — Transportation, accommodation, and meals for business trips, both domestic and international. Personal travel included in a business trip must be separated and the personal portion is not deductible.

Remember that capital expenditures (assets with a useful life exceeding one year costing above 32,000 DKK) must be depreciated rather than expensed in full. For full details on depreciation rules, see our business tax return guide →.

Partially Deductible Expenses

Several expense categories are only partially deductible under Danish tax law. Understanding these limitations is essential for accurate tax reporting:

Representation (representation): Costs for entertaining business contacts, including restaurant meals, catering, and event tickets, are only 75% deductible. The remaining 25% is considered a private benefit and is non-deductible. This applies regardless of whether the expense is for clients, suppliers, or business partners.

• 75% deductible — Restaurant bills, catering for business meetings, cultural events (theatre, concert tickets) for business contacts, and similar entertainment costs.
• Documentation required — For each representation expense, you must document: date, location, amount, business purpose, attendees (names and companies), and what business matter was discussed. Incomplete documentation can result in SKAT disallowing the deduction entirely.
• Gifts to customers — Promotional gifts below approximately 100 DKK per recipient per year are deductible. Gifts above this amount or gifts of cash/gift cards are generally non-deductible. Holiday gifts (e.g., Christmas hamper) up to approximately 200 DKK per employee are deductible as employee benefits.

Vehicle costs: Car expenses are deductible only in proportion to business use. This is strictly enforced by SKAT:

• Business use proportion — You must document the percentage of business vs. private mileage using a kørebog (mileage log). Only the business portion of fuel, maintenance, insurance, depreciation, and leasing costs is deductible.
• Kørebog (mileage log) — Must include: date, purpose of trip, starting and ending odometer readings, destination, number of kilometers, and business reason. SKAT can request logs for audit.
• Fixed rate method — Alternatively, you can use SKAT's official per-kilometer rate (approximately 3.73 DKK/km in 2026 for business mileage using your own car) instead of tracking actual costs. The rate covers all costs including depreciation, fuel, insurance, and maintenance.
• Company car (fri bil) — If a company car is available for private use, the employee is taxed on the private benefit (fri bil værdi) and the company deducts all costs. Private use percentage affects the taxable benefit calculation.

For detailed guidance on tax adjustments related to partially deductible expenses, see our business tax return guide →.

Non-Deductible Expenses

Certain expenses are never deductible for Danish tax purposes. These must be added back to accounting profit in the tax return (SEL-angivelse or personal B-income):

• Fines and penalties — All fines imposed by authorities, including traffic fines, parking tickets, SKAT late-filing penalties, and regulatory sanctions. These are not deductible under any circumstances.
• Gifts to employees above tax-free limits — While employee benefits within tax-free limits (e.g., Christmas gift up to 900 DKK, company events up to 1,200 DKK per event) are deductible, amounts exceeding these limits are taxable for the employee and fully deductible as salary costs. Unauthorized above-limit "gifts" without proper reporting may be non-deductible.
• Private expenses — Personal living expenses, family holidays, personal groceries, private telephone/internet (unless business separation is documented), personal clothing (except workwear with company logo), and health club memberships (unless a documented business purpose exists).
• Capital expenditures (must be depreciated) — Assets with a useful life exceeding one year and a cost exceeding 32,000 DKK (2026) cannot be deducted immediately. They must be capitalized and depreciated over their useful life according to tax depreciation rules.
• 25% of representation costs — As noted above, 25% of restaurant and entertainment costs for business contacts is non-deductible and must be added back in the tax return.
• Taxes and penalties — Corporate income tax (selskabsskat) itself is not deductible. VAT charged on purchases is recoverable (not an expense) and does not affect taxable income. Fines and penalties from any authority are not deductible.

Proper classification of expenses between deductible and non-deductible is essential. Misclassification can lead to SKAT audits, reassessments, and penalties. See our personal tax guide → for individual tax implications of business expenses.

Depreciation Rules (Afskrivninger)

Capital assets with a useful life exceeding one year must be depreciated (afskrevet) rather than expensed immediately. Denmark uses two main methods under the Afskrivningsloven (AL): saldoafskrivning (declining balance) for operating equipment and lineære afskrivninger (straight-line) for buildings and intangibles. All amounts in DKK.

Driftsmidler (Operating Equipment) — Declining Balance

• Rate: Up to 25% per year on the declining balance (AL §5). Applied to a pooled balance per business, not per asset.
• Småaktiver (small assets): Assets costing under 36,000 DKK (2026) / 34,400 DKK (2025) can be straksafskrevet (expensed immediately) under AL §6, stk. 1, nr. 2. No need to track them in the pool.
• Småsaldo: If the remaining pool balance is ≤ 36,000 DKK (2026), the entire balance can be written off immediately (AL §5, stk. 3).
• 108% super-deduction: New (fabriksnye) driftsmidler acquired between 1 Jan 2025 – 31 Dec 2026 qualify for a temporary 108% deduction (AL §5 E). A separate pool is maintained and merges back into the main pool at end of 2030. Excludes: passenger cars, ships, software, and fossil-fuel equipment.
• R&D equipment: Driftsmidler used for research and development can be straksafskrevet immediately and also qualify for the 108-110% enhanced deduction (AL §6, stk. 1, nr. 3).
• Long-life assets (infrastructure, AL §5 C): 15% declining balance. Certain infrastructure: 7%.

Bygninger (Buildings) — Straight-Line

• Acquired before 1 Jan 2023: 4% per year straight-line (25-year life).
• Acquired on or after 1 Jan 2023: 3% per year straight-line (~33-year life).
• Cannot depreciate: Office buildings, financial-sector buildings (AL §14, stk. 2). Accessory offices attached to production facilities can be depreciated.
• Ground value is never depreciable — only the building structure.

Goodwill & Intangible Assets

• Goodwill (acquired ≥ 1 Jan 1998): 1/7 per year straight-line (~14.3%), written off over 7 years (AL §40).
• Patents, know-how, trademarks, copyrights (acquired ≥ 1998): Same 1/7 per year rate. If the protection period is shorter than 7 years, the rate adjusts to match the remaining period.
• Software: Immediate deduction (straksafskrivning) was abolished from 1 Jan 2025. Must now be depreciated over its useful life or treated as a småaktiv if under the threshold.
• Full deduction in acquisition year — none in disposal year.

All depreciation schedules must be maintained and submitted with the tax return. For a detailed walkthrough of depreciation reporting in the SEL-angivelse, see our business tax return guide →. For deductions and incentives related to green investments, energy-efficient equipment, and sustainable business practices, see our Green Business Tax Guide →.

R&D Tax Credit (Forskningsfradrag)

Denmark offers a generous enhanced deduction for research and development (forsøgs- og forskningsfradrag) under LL §8 B. This is a super-deduction on qualifying R&D expenses, not a tax credit in the traditional sense. The deduction applies to: wages, research consumables, depreciation on R&D equipment, and costs for contract research.

Enhanced Deduction Rates (LL §8 B)

• 2023–2025: 108% of qualifying expenditure.
• 2026: 114%.
• 2027: 116%.
• 2028+: 120%.

R&D equipment (driftsmidler used for R&D) qualifies for an enhanced deduction too: 108% (2023-2025) / 110% (2026+).

Cash Payout for Loss-Making Companies (LL §8 X)

If the enhanced deduction creates or increases a tax loss, companies can apply for a cash payment (skattekredit) of the tax value. Maximum basis: 25 million DKK per year (→ max payout 5.5 million DKK at 22%). From 2027: increased to 35 million DKK per year. The payout is filed with the annual tax return.

What Qualifies as R&D

SKAT applies a narrow interpretation (based on SKM2004.162.HR). Three conditions must be met:

• Original research aiming to obtain new scientific or technical knowledge.
• The work must involve technical uncertainty (not routine product development or standard engineering).
• The activity must be linked to the taxpayer's business.

Not qualifying: routine product development, standard software development, design changes, new business concepts without technical uncertainty.

Documentation Requirements

SKAT is aggressive on R&D audits. Maintain: detailed project descriptions, budgets, time registrations, technical documentation of the work performed, and evidence of scientific/technical uncertainty. Many claims are denied on audit for insufficient documentation. Engage a revisor with R&D experience if claiming the deduction.

You can choose to deduct R&D expenses fully in the year incurred or spread them over 5 years (current + 4 following years). Discuss with your revisor which approach maximizes your benefit given your taxable income trajectory. For more on the interaction between R&D deductions, IP amortisation, and withholding tax on cross-border royalties, see our IP and royalty tax guide →. For tax strategies related to startup funding, R&D incentives, and M&A transactions, see our M&A and Startup Tax Guide →.

Home Office Deduction (Hjemmekontor)

Working from home has become increasingly common in Denmark, and the rules for deducting home office expenses have evolved, particularly post-COVID-19. The key principle is that only additional costs directly caused by having a home office are deductible — regular housing costs (rent, mortgage interest) are generally not deductible.

Home office deduction methods:

• Fixed rate method — SKAT allows a simplified fixed-rate deduction for home office costs. For 2026, the rate is approximately 5,000 DKK per year if you have a dedicated workspace and meet certain conditions. This does not require detailed documentation of actual costs.
• Actual cost method — You can deduct actual documented additional costs: extra heating, electricity, internet (business portion), and depreciation on office furniture and equipment. You must calculate the business-use percentage of the home (e.g., home office area as a percentage of total home area).
• Dedicated workspace requirement — The home office must be a dedicated, separate space used regularly and exclusively for work. A desk in a bedroom corner may not qualify. SKAT may request photographs or floor plans.
• Post-COVID simplified rules — For employees working from home (not self-employed), the home office deduction was simplified during COVID-19. Self-employed individuals face stricter requirements and must demonstrate that the home office is essential for the business.

If you are self-employed (enkeltmandsvirksomhed), you may also be able to deduct a portion of home insurance and property taxes proportional to the business-use area. However, this is subject to strict documentation requirements and SKAT review. For more on self-employment expenses, see our starting a business guide →.

Documentation Requirements

Proper documentation is the foundation of successful expense deduction claims. SKAT has increased its focus on documentation, especially with the move to mandatory digital invoicing:

• Digital invoices mandatory from 2024 — From 2024, all business invoices must be electronic (e-invoices or digital PDFs). Paper receipts are still accepted but must be scanned and stored digitally. SKAT expects a digital archive system.
• Kvitteringspligt (receipt retention) — All documentation must be retained for 5 years from the end of the relevant financial year. This applies to invoices, receipts, contracts, bank statements, mileage logs, and expense reports.
• Kørselsregnskab (travel log) — For vehicle expenses, maintain a detailed mileage log with date, purpose, starting and ending odometer, destination, kilometers, and business reason. SKAT may request logs for any tax year within the 5-year retention period.
• Expense reports — For each expense, document: amount (in DKK), date, vendor, business purpose, and approval (if relevant). For representation, add: participants, their companies, and what business matter was discussed.
• Transfer pricing documentation — If your business has transactions with related parties (parent company, subsidiaries, sister companies), you must maintain transfer pricing documentation demonstrating arm's length pricing. This applies to both domestic and cross-border related-party transactions.

SKAT can audit expenses up to 5 years after the financial year end (10 years in cases of gross negligence or fraud). A well-organized digital documentation system is your best defense. For more on bookkeeping requirements, see our starting a business guide → and business tax return guide →.

FAQs

Are meals while traveling fully deductible?

Meals during business travel (both domestic and international) are fully deductible as travel costs, subject to documentation. However, meals with business contacts in restaurants are 75% deductible as representation costs. The key distinction is whether you are traveling alone (travel cost, fully deductible) or entertaining a contact (representation, 75% deductible).

Can I deduct my home internet and phone?

Yes, but only the business-use portion. If you have a dedicated business line or can document usage (e.g., itemized bills showing business calls), you can deduct the actual business portion. A simplified method of 25-50% of total costs may be accepted by SKAT for small businesses, but proper documentation is recommended.

What documentation does SKAT require for car expenses?

SKAT requires a kørebog (mileage log) showing: date, starting and ending odometer reading, destination, purpose, number of kilometers, and business relevance. Without a log, SKAT may disallow all car expense deductions. Digital apps that track GPS mileage are acceptable and recommended.

Are startup costs deductible before registration?

Yes, pre-registration costs incurred before CVR registration may be deductible if they relate to the future business and are properly documented. Typical pre-registration costs include market research, legal fees for company formation, and initial marketing materials. Claims require careful documentation.

What happens if SKAT disallows an expense deduction?

If SKAT disallows a deduction, the expense is added back to taxable income, resulting in additional tax, interest, and potentially penalties. You have the right to appeal the decision within 3 months via SKAT's complaint system or the Tax Appeals Agency (Skatteankestyrelsen).