Summary
If you make $139,918 a year living in the region of South Dakota, USA, you will be taxed $35,012. That means that your net pay will be $104,906 per year, or $8,742 per month. Your average tax rate is 25.0% and your marginal tax rate is 31.3%. 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 $31.31, hence, your net pay will only increase by $68.69.
Bonus Example
A $1,000 bonus will generate an extra $687 of net incomes. A $5,000 bonus will generate an extra $3,435 of net incomes.