In mid-November, the forskudsopgørelse (preliminary tax assessment) for the coming year is published by the Danish Tax Agency.
This is the time to review your registered information — such as income, interest, mortgage, or business activity — and make sure everything reflects your actual situation.
If you expect any changes in your earnings, deductions, or employment, it’s recommended to update your forskudsopgørelse now to ensure the correct tax payments throughout the year and avoid any restskat (tax underpayment) later on.
Check out our relevant article about forskudsopgørelsen here!
More info from SKAT: https://skat.dk/borger/forskudsopgoerelse/forskudsopgoerelsen