If you make $51,000 a year living in the region of Alabama, USA, you will be taxed $10,467. That means that your net pay will be $40,533 per year, or $3,378 per month. Your average tax rate is 20.5% and your marginal tax rate is 27.7%. 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 $27.70, hence, your net pay will only increase by $72.30.
A $1,000 bonus will generate an extra $723 of net incomes. A $5,000 bonus will generate an extra $3,615 of net incomes.