Summary
If you make $11,960 a year living in the region of Colorado, USA, you will be taxed $1,277. That means that your net pay will be $10,683 per year, or $890 per month. Your average tax rate is 10.7% and your marginal tax rate is 12.5%. 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 $12.51, hence, your net pay will only increase by $87.49.
Bonus Example
A $1,000 bonus will generate an extra $875 of net incomes. A $5,000 bonus will generate an extra $4,375 of net incomes.