Summary
If you make $9,960 a year living in the region of Wisconsin, USA, you will be taxed $877. That means that your net pay will be $9,083 per year, or $757 per month. Your average tax rate is 8.8% and your marginal tax rate is 11.2%. 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 $11.19, hence, your net pay will only increase by $88.81.
Bonus Example
A $1,000 bonus will generate an extra $888 of net incomes. A $5,000 bonus will generate an extra $4,441 of net incomes.