Summary
If you make $19,980,480 a year living in the region of California, USA, you will be taxed $10,514,364. That means that your net pay will be $9,466,116 per year, or $788,843 per month. Your average tax rate is 52.6% and your marginal tax rate is 52.9%. 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 $52.88, hence, your net pay will only increase by $47.12.
Bonus Example
A $1,000 bonus will generate an extra $471 of net incomes. A $5,000 bonus will generate an extra $2,356 of net incomes.