If you make $10,500 a year living in the region of Arizona, USA, you will be taxed $1,087. That means that your net pay will be $9,413 per year, or $784 per month. Your average tax rate is 10.4% and your marginal tax rate is 10.4%. 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 $10.35, hence, your net pay will only increase by $89.65.
A $1,000 bonus will generate an extra $897 of net incomes. A $5,000 bonus will generate an extra $4,483 of net incomes.