Summary
If you make $31,980 a year living in the region of South Carolina, USA, you will be taxed $6,263. That means that your net pay will be $25,717 per year, or $2,143 per month. Your average tax rate is 19.6% and your marginal tax rate is 26.7%. 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 $26.65, hence, your net pay will only increase by $73.35.
Bonus Example
A $1,000 bonus will generate an extra $734 of net incomes. A $5,000 bonus will generate an extra $3,668 of net incomes.