Summary
If you make 425,108 kr a year living in the region of Ballerup, Denmark, you will be taxed 138,993 kr. That means that your net pay will be 286,115 kr per year, or 23,843 kr per month. Your average tax rate is 32.7% and your marginal tax rate is 35.3%. 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 35.25 kr, hence, your net pay will only increase by 64.75 kr.
Bonus Example
A 1,000 kr bonus will generate an extra 648 kr of net incomes. A 5,000 kr bonus will generate an extra 3,238 kr of net incomes.