Summary
If you make $19,920 a year living in the region of Arizona, USA, you will be taxed $2,759. That means that your net pay will be $17,161 per year, or $1,430 per month. Your average tax rate is 13.9% and your marginal tax rate is 20.5%. 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 $20.49, hence, your net pay will only increase by $79.51.
Bonus Example
A $1,000 bonus will generate an extra $795 of net incomes. A $5,000 bonus will generate an extra $3,976 of net incomes.