Summary
If you make $31,143 a year living in the region of Wisconsin, USA, you will be taxed $5,437. That means that your net pay will be $25,706 per year, or $2,142 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 $25.48, hence, your net pay will only increase by $74.52.
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.