Summary
If you make $143,491 a year living in the region of Colorado, USA, you will be taxed $42,424. That means that your net pay will be $101,067 per year, or $8,422 per month. Your average tax rate is 29.6% and your marginal tax rate is 34.3%. 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 $34.34, hence, your net pay will only increase by $65.66.
Bonus Example
A $1,000 bonus will generate an extra $657 of net incomes. A $5,000 bonus will generate an extra $3,283 of net incomes.