Summary
If you make $180,674 a year living in the region of Iowa, USA, you will be taxed $56,082. That means that your net pay will be $124,592 per year, or $10,383 per month. Your average tax rate is 31.0% and your marginal tax rate is 37.1%. 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 $37.06, hence, your net pay will only increase by $62.94.
Bonus Example
A $1,000 bonus will generate an extra $629 of net incomes. A $5,000 bonus will generate an extra $3,147 of net incomes.