Summary
If you make 4,221,252 kr a year living in the region of Guldborgsund, Denmark, you will be taxed 1,977,695 kr. That means that your net pay will be 2,243,557 kr per year, or 186,963 kr per month. Your average tax rate is 46.9% 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 48.98 kr, hence, your net pay will only increase by 51.02 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 2,551 kr of net incomes.