Summary
If you make $21,212 a year living in the region of California, USA, you will be taxed $2,949. That means that your net pay will be $18,263 per year, or $1,522 per month. Your average tax rate is 13.9% and your marginal tax rate is 21.7%. 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 $21.66, hence, your net pay will only increase by $78.34.
Bonus Example
A $1,000 bonus will generate an extra $783 of net incomes. A $5,000 bonus will generate an extra $3,917 of net incomes.