Tax Assessment Notice 2025: Deductions you must report yourself

The Danish Tax Agency only pre-fills the deductions they automatically receive from your employer and bank. All other deductions must be reported by you—and this is where many Danes lose money.

We’ve gathered the most commonly overlooked deductions in a short, free guide, so you can review your tax assessment notice in under 20 minutes.

Which deductions are missing from your tax assessment notice?

Most people think the tax assessment notice is complete when it arrives in March. But deductions such as commuting (transport), home improvement work, union fees, and foreign tax are among those you must add yourself. If you miss them, you pay too much tax.

Our guide covers many specific deductions that cost Danes billions of kroner every year in missed deductions.

What do you get in the guide?

• How Danish tax works: progressive rates, AM-bidrag, municipal tax and church tax explained
• The researcher scheme (forskerskatteordningen): who qualifies for the 32.84% flat rate in 2026 (new lower salary threshold: DKK 65,400/month)
• Global income: how to report foreign salary, investments, pensions and rental income
• Double taxation: how tax treaties and the Foreign Tax Credit work in practice
• Key deductions you may be missing: commuting, interest, pension and household services
• Exit tax (fraflytterskat): what happens to your assets if you leave Denmark
• All deadlines for 2026 in one place

Free: 24 pages. Print-ready. Takes under 20 minutes to review. Download here: Danish Tax for Expats 2026 | Free 24-Page Guide | SkatteInform

Important dates for the 2025 tax assessment notice

Date What happens?
23 March 2026 The tax assessment notice opens in TastSelv
24 April 2026 Payout of tax refunds begins
20 Maj 2026 Deadline to amend the tax assessment notice (extended from 1 May)
1 Juli 2026 Deadline for extended tax return and foreign securities accounts

Do you have complex tax circumstances?

If you have foreign income, shares, property abroad, or your own company, it may be worth getting a professional assessment. We help you find deductions you didn’t know you were entitled to.
SkatteInform is a state-authorized auditing partnership with more than 25 years of experience in tax advisory services.

Frequently asked questions

Which deductions are automatically reported to SKAT?

The Danish Tax Agency automatically receives information about salary, pension, and bank interest. Deductions such as commuting, home improvement work, union fees, and foreign tax must be added by you in TastSelv.

Is the home improvement deduction (håndværkerfradraget) back in 2025?

Yes, the home improvement deduction has been reintroduced from 2025 for energy savings and climate-proofing measures. You must pay digitally and keep documentation. Our guide explains the details.

When is the deadline to amend my tax assessment notice?

The deadline is 20 May 2026 (extended from 1 May). If you have an extended tax return, the deadline is 1 July 2026.

Can I amend deductions for previous years?

The deadline is 20 May 2026 (extended from 1 May). If you have an extended tax return, the deadline is 1 July 2026.

When will my tax refund be paid out?

From 24 April 2026 to your NemKonto. If you have debt to the public sector, it may be offset first.

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