Summary
If you make $12,012 a year living in the region of Colorado, USA, you will be taxed $1,284. That means that your net pay will be $10,728 per year, or $894 per month. Your average tax rate is 10.7% and your marginal tax rate is 12.8%. 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 $12.75, hence, your net pay will only increase by $87.25.
Bonus Example
A $1,000 bonus will generate an extra $873 of net incomes. A $5,000 bonus will generate an extra $4,363 of net incomes.