For individuals
You can see your tax assessment notice in E-tax from late March, and it tells you if you're entitled to a tax refund or if you have paid too little tax last year. The deadline for making changes to your 2025 assessment is 1 May 2026.
You can change your tax assessment notices for earlier years – let's say you forgot to enter a deduction or certain income – in E-tax.
For businesses
If you want to report information before your tax assessment notice is generated, you have to do so by no later than 1 July 2026. When you have reported and accepted such information, your assessment will be generated. Your tax assessment notice tells your if you will have to pay outstanding tax of if you will get a tax refund.
Generally, you get a tax return if you run a business or have non-Danish income.
Read more about reporting on profit or loss of own business
Read more about reporting non-Danish income, including assets and property
If you want to see your expected income, deductions and tax for 2026, please go to your preliminary income assessment (forskudsopgørelse).