Summary
If you make $21,353 a year living in the region of Colorado, USA, you will be taxed $3,273. That means that your net pay will be $18,080 per year, or $1,507 per month. Your average tax rate is 15.3% and your marginal tax rate is 22.9%. 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 $22.92, hence, your net pay will only increase by $77.08.
Bonus Example
A $1,000 bonus will generate an extra $771 of net incomes. A $5,000 bonus will generate an extra $3,854 of net incomes.