Summary
If you make 645,060 kr a year living in the region of Struer, Denmark, you will be taxed 224,062 kr. That means that your net pay will be 420,998 kr per year, or 35,083 kr per month. Your average tax rate is 34.7% and your marginal tax rate is 49.0%. 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 49 kr, hence, your net pay will only increase by 51 kr.
Bonus Example
A 1,000 kr bonus will generate an extra 510 kr of net incomes. A 5,000 kr bonus will generate an extra 2,550 kr of net incomes.