Summary
If you make $54,918 a year living in the region of South Carolina, USA, you will be taxed $12,403. That means that your net pay will be $42,515 per year, or $3,543 per month. Your average tax rate is 22.6% and your marginal tax rate is 28.9%. 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 $28.90, hence, your net pay will only increase by $71.10.
Bonus Example
A $1,000 bonus will generate an extra $711 of net incomes. A $5,000 bonus will generate an extra $3,555 of net incomes.