If you make $50,000 a year living in the region of California, USA, you will be taxed $10,417. That means that your net pay will be $39,583 per year, or $3,299 per month. Your average tax rate is 20.8% and your marginal tax rate is 33.1%. 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 $33.06, hence, your net pay will only increase by $66.94.
A $1,000 bonus will generate an extra $669 of net incomes. A $5,000 bonus will generate an extra $3,347 of net incomes.