Summary
If you make 665,604 kr a year living in the region of Gladsaxe, Denmark, you will be taxed 222,138 kr. That means that your net pay will be 443,466 kr per year, or 36,956 kr per month. Your average tax rate is 33.4% and your marginal tax rate is 47.3%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of 100 kr in your salary will be taxed 47.33 kr, hence, your net pay will only increase by 52.67 kr.
Bonus Example
A 1,000 kr bonus will generate an extra 527 kr of net incomes. A 5,000 kr bonus will generate an extra 2,634 kr of net incomes.