Summary
If you make $45,006 a year living in the region of Washington, USA, you will be taxed $7,282. That means that your net pay will be $37,724 per year, or $3,144 per month. Your average tax rate is 16.2% and your marginal tax rate is 20.1%. 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 $20.08, hence, your net pay will only increase by $79.92.
Bonus Example
A $1,000 bonus will generate an extra $799 of net incomes. A $5,000 bonus will generate an extra $3,996 of net incomes.