If you make $20,000 a year living in the region of Pennsylvania, USA, you will be taxed $2,901. That means that your net pay will be $17,099 per year, or $1,425 per month. Your average tax rate is 14.5% and your marginal tax rate is 21.8%. 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 $21.78, hence, your net pay will only increase by $78.22.
A $1,000 bonus will generate an extra $782 of net incomes. A $5,000 bonus will generate an extra $3,911 of net incomes.