If you make $90,000 a year living in the region of South Carolina, USA, you will be taxed $25,510. That means that your net pay will be $64,490 per year, or $5,374 per month. Your average tax rate is 28.3% and your marginal tax rate is 36.7%. 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 $36.65, hence, your net pay will only increase by $63.35.
A $1,000 bonus will generate an extra $634 of net incomes. A $5,000 bonus will generate an extra $3,168 of net incomes.