Summary
If you make $400,000 a year living in the region of Washington, USA, you will be taxed $126,580. That means that your net pay will be $273,420 per year, or $22,785 per month. Your average tax rate is 31.7% and your marginal tax rate is 37.4%. 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 $37.35, hence, your net pay will only increase by $62.65.
Bonus Example
A $1,000 bonus will generate an extra $627 of net incomes. A $5,000 bonus will generate an extra $3,133 of net incomes.