Summary
If you make $9,334 a year living in the region of Iowa, USA, you will be taxed $819. That means that your net pay will be $8,516 per year, or $710 per month. Your average tax rate is 8.8% and your marginal tax rate is 11.5%. 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 $11.45, hence, your net pay will only increase by $88.55.
Bonus Example
A $1,000 bonus will generate an extra $886 of net incomes. A $5,000 bonus will generate an extra $4,428 of net incomes.