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See and change your previous tax assessment notices

You can change your tax assessment notices from past years if you have forgotten to enter a tax deduction/an allowance or an income. Often, you can make the change yourself in E-tax if you seelct Change tax assessment notice/tax return. If you disagree about a number that you can't change, you can contact the reporting party or send us an email documenting the change you want to make.

Most often, you will get your new tax assessment notice right away hen you make the changes in E-tax, and if you're entitled to a refund, it will be quite fast.

Certain changes will be double checked. If your change is doule checked you will get a letter where we aks you to explain the changes. You will also need to send relevant documentation.

See and change your tax assessment notice

If you want to change your tax assessment after the below dates, you have to send us a request to do so. You can only make changes to your tax assessment notice after the below deadlines under special circumstances. You need to specify what you want to change and why. Remember to attach or enclose relevant documentation.

Request a change in a previous tax assessment notice (MitID is required)

If you don't have MitID or if you have authorised somebody else (your accountant for example), you need to submit your request via the option Write to us in E-tax.

Deadlines for changing previous tax assessment notices
Tax assessment notice, year:  Deadline:
2023 1 May 2027
2022 1 May 2026
2021 1 May 2025
2020 1 May 2024

For further legal information in Danish see our legal guide .