If you make $55,000 a year living in the region of Missouri, USA, you will be taxed $11,400. That means that your net pay will be $43,600 per year, or $3,633 per month. Your average tax rate is 20.7% and your marginal tax rate is 35.1%. 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 $35.05, hence, your net pay will only increase by $64.95.
A $1,000 bonus will generate an extra $650 of net incomes. A $5,000 bonus will generate an extra $3,248 of net incomes.