Summary
If you make $31,179 a year living in the region of Wisconsin, USA, you will be taxed $5,446. That means that your net pay will be $25,733 per year, or $2,144 per month. Your average tax rate is 17.5% and your marginal tax rate is 25.5%. 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 $25.49, hence, your net pay will only increase by $74.51.
Bonus Example
A $1,000 bonus will generate an extra $745 of net incomes. A $5,000 bonus will generate an extra $3,726 of net incomes.