If you make $20,000 a year living in the region of Arizona, USA, you will be taxed $2,815. That means that your net pay will be $17,185 per year, or $1,432 per month. Your average tax rate is 14.1% and your marginal tax rate is 21.4%. 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 $21.35, hence, your net pay will only increase by $78.65.
A $1,000 bonus will generate an extra $787 of net incomes. A $5,000 bonus will generate an extra $3,933 of net incomes.