Worknow
1 September: the new ferieår began
Holiday days start building up again: about 2 days for each month you work.
Deadline calendar
What happens when during the year. The "Add to my calendar" button puts the event in your own phone with a reminder a week ahead — no sign-up.
Checked against sources 21.09.2026Data updated 23.09.2026
September 2026
November 2026
SKATexact date not announced yet
The forskudsopgørelse for 2027 opens
Check your expected income and your deductions, so that you do not overpay every month or end up with restskat.
December 2026
Work
By 31 December: use your holiday
This is about days earned up to 31 August 2026. Otherwise you can lose them.
January 2027
SKAT
Your new skattekort takes effect
Your employer receives it automatically. Look at the first lønseddel of the year: are the trækprocent and fradrag right?
March 2027
SKATexact date not announced yet
The årsopgørelse for 2026 opens
Last time it was 23 March 2026.
Residence permit
17 March — permits under Særloven are valid up to this date
The government has announced its intention to extend them to March 2028. The decision has not been formalised yet — we are following it.
April — May 2027
SKATexact date not announced yet
Overpaid tax is refunded
Overskydende skat arrives in your NemKonto by itself; there is nothing you have to submit.
SKAT
1 May — the last day to correct your årsopgørelse
The usual deadline. In 2026 it was extended to 20 May, so check the date.
July 2027
SKAT
1 July — pay your restskat without a surcharge
After this date a surcharge is added to the debt.
Dates shift slightly every year — we update the calendar as soon as they are announced officially. The source is listed next to each event.