Summary
If you make 351,000 kr a year living in the region of Frederikssund, Denmark, you will be taxed 115,149 kr. That means that your net pay will be 235,851 kr per year, or 19,654 kr per month. Your average tax rate is 32.8% and your marginal tax rate is 33.1%. 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 33.06 kr, hence, your net pay will only increase by 66.94 kr.
Bonus Example
A 1,000 kr bonus will generate an extra 669 kr of net incomes. A 5,000 kr bonus will generate an extra 3,347 kr of net incomes.