Summary
If you make $42,099 a year living in the region of Iowa, USA, you will be taxed $8,187. That means that your net pay will be $33,912 per year, or $2,826 per month. Your average tax rate is 19.5% and your marginal tax rate is 25.1%. 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 $25.14, hence, your net pay will only increase by $74.86.
Bonus Example
A $1,000 bonus will generate an extra $749 of net incomes. A $5,000 bonus will generate an extra $3,743 of net incomes.