If you make 300,000,- kr a year living in the region of Brønderslev, Denmark, you will be taxed 106,485, kr. That means that your net pay will be 193,515,- kr per year, or 16,126,- kr per month. Your average tax rate is 35.5% and your marginal tax rate is 42.0%. 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 41.95,- kr, hence, your net pay will only increase by 58.05,- kr.
A 1,000,- kr bonus will generate an extra 581,- kr of net incomes. A 5,000,- kr bonus will generate an extra 2,903,- kr of net incomes.