Summary
If you make 598,368 kr a year living in the region of Roskilde, Denmark, you will be taxed 200,137 kr. That means that your net pay will be 398,231 kr per year, or 33,186 kr per month. Your average tax rate is 33.5% and your marginal tax rate is 37.7%. 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 37.65 kr, hence, your net pay will only increase by 62.35 kr.
Bonus Example
A 1,000 kr bonus will generate an extra 624 kr of net incomes. A 5,000 kr bonus will generate an extra 3,118 kr of net incomes.