If you make $180,000 a year living in the region of South Carolina, USA, you will be taxed $58,012. That means that your net pay will be $121,988 per year, or $10,166 per month. Your average tax rate is 32.2% and your marginal tax rate is 40.5%. 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 $40.45, hence, your net pay will only increase by $59.55.
A $1,000 bonus will generate an extra $596 of net incomes. A $5,000 bonus will generate an extra $2,978 of net incomes.