Summary
If you make $11,908 a year living in the region of Washington, USA, you will be taxed $963. That means that your net pay will be $10,945 per year, or $912 per month. Your average tax rate is 8.1% and your marginal tax rate is 8.1%. 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 $8.13, hence, your net pay will only increase by $91.87.
Bonus Example
A $1,000 bonus will generate an extra $919 of net incomes. A $5,000 bonus will generate an extra $4,594 of net incomes.