Summary
If you make $18,096 a year living in the region of Washington, USA, you will be taxed $1,978. That means that your net pay will be $16,118 per year, or $1,343 per month. Your average tax rate is 10.9% and your marginal tax rate is 18.1%. 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 $18.08, hence, your net pay will only increase by $81.92.
Bonus Example
A $1,000 bonus will generate an extra $819 of net incomes. A $5,000 bonus will generate an extra $4,096 of net incomes.