Summary
If you make $10,404 a year living in the region of Iowa, USA, you will be taxed $942. That means that your net pay will be $9,462 per year, or $788 per month. Your average tax rate is 9.1% and your marginal tax rate is 11.8%. 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 $11.79, hence, your net pay will only increase by $88.21.
Bonus Example
A $1,000 bonus will generate an extra $882 of net incomes. A $5,000 bonus will generate an extra $4,411 of net incomes.