Denmark runs one of the most automated personal tax systems in the world. For most residents, the national tax agency, Skattestyrelsen, prepares your figures in advance, and your main job is to check them rather than build a return from scratch. Understanding the two documents at the centre of the system, the forskudsopgørelse and the årsopgørelse, makes the whole annual cycle straightforward.
How does the Danish tax year work?
The Danish income tax year follows the calendar year. The cycle is built around two statements you reach through the self-service portal, TastSelv (E-tax), at skat.dk, logging in with your MitID:
- The forskudsopgørelse (preliminary income assessment) is published in late autumn for the year ahead. It estimates your expected income, deductions, and the tax to be withheld, and it generates the tax card your employer or pension provider uses to deduct tax from each payment.
- The årsopgørelse (tax assessment notice) appears the following spring. It reconciles what you actually earned and paid against the preliminary estimate and shows whether you are due a refund or owe an outstanding amount.
Because tax is withheld throughout the year against the preliminary assessment, keeping that estimate accurate is what prevents a large bill or a surprise at the end of the year. If your circumstances change, updating the forskudsopgørelse mid-year keeps your withholding aligned with reality.
What is the årsopgørelse?
The årsopgørelse is your final annual statement. Skattestyrelsen pre-fills it with information reported by employers, banks, pension providers, and other third parties, so much of it is already complete when you open it. It sets out your total income, your deductions, the tax you have already paid, and the resulting balance for the year.
Your responsibility is to review it for accuracy and add anything the agency could not capture automatically, such as certain deductions, foreign income, or a change in your situation. If everything looks correct, many residents simply confirm the statement and are finished for the year.
Do you need to file a return yourself?
For a large share of ordinary wage earners, there is nothing to submit actively; you check the pre-filled årsopgørelse and correct it only if something is wrong or missing. However, some people must provide information before the agency can finalise their assessment. This commonly applies if you:
- have income from outside Denmark,
- run a sole proprietorship or other business,
- own property abroad, or
- have deductions or circumstances not reported automatically by a third party.
In these cases you complete the relevant fields in TastSelv before the deadline the agency sets. If you are unsure whether your situation requires action, the guidance on skat.dk explains who must report and what information is needed.
When are the deadlines, and how do you make changes?
Skattestyrelsen publishes the årsopgørelse in spring and sets an annual deadline for corrections. People with foreign income or self-employment generally face a later filing deadline than ordinary wage earners. Because these dates can shift from one year to the next, confirm the current deadlines on skat.dk rather than relying on a date you saw previously.
To make a change, log in to TastSelv with MitID, open the årsopgørelse for the relevant year, and edit the appropriate fields. Adjusting your forskudsopgørelse during the year, for example after a pay change, a new loan, or a house move, updates your tax card automatically so the correct amount is withheld going forward. Any refund or balance due is settled after the assessment is finalised. Keep documentation for the figures you enter in case the agency later asks you to support them.
Where to get help
If your situation is involved, such as cross-border income, self-employment, or property held abroad, it can be worth working with a qualified professional rather than relying on the pre-filled figures alone. You can find recognized professional bodies for Denmark to identify reputable, credentialed help in your area.
Sources
Skattestyrelsen (the Danish Tax Agency), through its official portal skat.dk and the TastSelv self-service system, is the authoritative source for the forskudsopgørelse, the årsopgørelse, filing requirements, and deadlines. Because rates, thresholds, and dates are reviewed each year, confirm the current figures and rules directly with Skattestyrelsen before acting.