If you make 300,000,- kr a year living in the region of Hørsholm, Denmark, you will be taxed 98,337, kr. That means that your net pay will be 201,663,- kr per year, or 16,805,- kr per month. Your average tax rate is 32.8% and your marginal tax rate is 38.6%. 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 38.56,- kr, hence, your net pay will only increase by 61.44,- kr.
A 1,000,- kr bonus will generate an extra 614,- kr of net incomes. A 5,000,- kr bonus will generate an extra 3,072,- kr of net incomes.