Summary
If you make $54,840 a year living in the region of Iowa, USA, you will be taxed $11,416. That means that your net pay will be $43,424 per year, or $3,619 per month. Your average tax rate is 20.8% and your marginal tax rate is 25.7%. 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 $25.67, hence, your net pay will only increase by $74.33.
Bonus Example
A $1,000 bonus will generate an extra $743 of net incomes. A $5,000 bonus will generate an extra $3,717 of net incomes.