Summary
If you make $4,940 a year living in the region of Colorado, USA, you will be taxed $421. That means that your net pay will be $4,519 per year, or $377 per month. Your average tax rate is 8.5% and your marginal tax rate is 12.2%. 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 $12.21, hence, your net pay will only increase by $87.79.
Bonus Example
A $1,000 bonus will generate an extra $878 of net incomes. A $5,000 bonus will generate an extra $4,390 of net incomes.