National Insurance Contribution
If you make 100,000 kr a year living in Norway, you will be taxed 8,000 kr. That means that your net pay will be 92,000 kr per year, or 7,667 kr per month. Your average tax rate is 8.0% and your marginal tax rate is 8.0%. 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 8 kr, hence, your net pay will only increase by 92 kr.
A 1,000 kr bonus will generate an extra 920 kr of net incomes. A 5,000 kr bonus will generate an extra 4,600 kr of net incomes.
NOTE* Withholding is calculated based on the tables of Norway, income tax. For simplification purposes some variables (such as marital status and others) have been assumed. This document does not represent legal authority and shall be used for approximation purposes only.