Summary
If you make 640,900 kr a year living in the region of Herlev, Denmark, you will be taxed 210,990 kr. That means that your net pay will be 429,910 kr per year, or 35,826 kr per month. Your average tax rate is 32.9% and your marginal tax rate is 47.4%. 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 47.42 kr, hence, your net pay will only increase by 52.58 kr.
Bonus Example
A 1,000 kr bonus will generate an extra 526 kr of net incomes. A 5,000 kr bonus will generate an extra 2,629 kr of net incomes.