Summary
If you make $39,447 a year living in the region of Iowa, USA, you will be taxed $7,521. That means that your net pay will be $31,926 per year, or $2,660 per month. Your average tax rate is 19.1% and your marginal tax rate is 24.9%. 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 $24.90, hence, your net pay will only increase by $75.10.
Bonus Example
A $1,000 bonus will generate an extra $751 of net incomes. A $5,000 bonus will generate an extra $3,755 of net incomes.