Summary
If you make $8,944 a year living in the region of Iowa, USA, you will be taxed $775. That means that your net pay will be $8,169 per year, or $681 per month. Your average tax rate is 8.7% and your marginal tax rate is 10.6%. 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 $10.58, hence, your net pay will only increase by $89.42.
Bonus Example
A $1,000 bonus will generate an extra $894 of net incomes. A $5,000 bonus will generate an extra $4,471 of net incomes.