Summary
If you make $90,000 a year living in the region of Iowa, USA, you will be taxed $23,813. That means that your net pay will be $66,187 per year, or $5,516 per month. Your average tax rate is 26.5% and your marginal tax rate is 35.6%. 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 $35.60, hence, your net pay will only increase by $64.40.
Bonus Example
A $1,000 bonus will generate an extra $644 of net incomes. A $5,000 bonus will generate an extra $3,220 of net incomes.