Summary
If you make 3,720 kr a year living in the region of Haderslev, Denmark, you will be taxed 1,649 kr. That means that your net pay will be 2,071 kr per year, or 173 kr per month. Your average tax rate is 44.3% and your marginal tax rate is 28.8%. 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 28.83 kr, hence, your net pay will only increase by 71.17 kr.
Bonus Example
A 1,000 kr bonus will generate an extra 712 kr of net incomes. A 5,000 kr bonus will generate an extra 3,559 kr of net incomes.