EU/EEA or Swiss citizens

An EU/EEA/Swiss citizen, who accompanies an EU/EEA/Swiss citizen, can apply for an EU residence document in Denmark, if the spouse/partner (the principal person) has already been granted – or is simultaneously applying for an EU residence document in Denmark.

You must apply for an EU residence document if your stay exceeds three months. Your spouse/partner must accompany you, when you register.

If your stay exceeds six months, you must also apply for a CPR-number, and if you have any income in Denmark, you must register for a tax card and a personal tax number. 

Find more information here