Summary
If you make $54,955 a year living in the region of Colorado, USA, you will be taxed $11,385. That means that your net pay will be $43,570 per year, or $3,631 per month. Your average tax rate is 20.7% and your marginal tax rate is 29.9%. 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 $29.94, hence, your net pay will only increase by $70.06.
Bonus Example
A $1,000 bonus will generate an extra $701 of net incomes. A $5,000 bonus will generate an extra $3,503 of net incomes.