Summary
If you make $1,145 a year living in the region of South Carolina, USA, you will be taxed $89.88. That means that your net pay will be $1,055 per year, or $87.93 per month. Your average tax rate is 7.9% and your marginal tax rate is 7.9%. 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 $7.85, hence, your net pay will only increase by $92.15.
Bonus Example
A $1,000 bonus will generate an extra $922 of net incomes. A $5,000 bonus will generate an extra $4,608 of net incomes.