Summary
If you make $331,490 a year living in the region of North Dakota, USA, you will be taxed $107,521. That means that your net pay will be $223,969 per year, or $18,664 per month. Your average tax rate is 32.4% and your marginal tax rate is 40.0%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of $100 in your salary will be taxed $39.99, hence, your net pay will only increase by $60.01.
Bonus Example
A $1,000 bonus will generate an extra $600 of net incomes. A $5,000 bonus will generate an extra $3,001 of net incomes.