If you make $20,000 a year living in the region of Alabama, USA, you will be taxed $2,998. That means that your net pay will be $17,002 per year, or $1,417 per month. Your average tax rate is 15.0% and your marginal tax rate is 23.2%. 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 $23.20, hence, your net pay will only increase by $76.80.
A $1,000 bonus will generate an extra $768 of net incomes. A $5,000 bonus will generate an extra $3,840 of net incomes.