Summary
If you make $146,178 a year living in the region of Iowa, USA, you will be taxed $44,866. That means that your net pay will be $101,312 per year, or $8,443 per month. Your average tax rate is 30.7% and your marginal tax rate is 36.3%. 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 $36.28, hence, your net pay will only increase by $63.72.
Bonus Example
A $1,000 bonus will generate an extra $637 of net incomes. A $5,000 bonus will generate an extra $3,186 of net incomes.