Summary
If you make $99,975 a year living in the region of South Carolina, USA, you will be taxed $28,908. That means that your net pay will be $71,067 per year, or $5,922 per month. Your average tax rate is 28.9% and your marginal tax rate is 37.8%. 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 $37.84, hence, your net pay will only increase by $62.16.
Bonus Example
A $1,000 bonus will generate an extra $622 of net incomes. A $5,000 bonus will generate an extra $3,108 of net incomes.