Summary
If you make 509,856 元 a year living in the region of Beijing, China, you will be taxed 136,976 元. That means that your net pay will be 372,880 元 per year, or 31,073 元 per month. Your average tax rate is 26.9% and your marginal tax rate is -17.9%. This marginal tax rate means that your immediate additional income will be taxed at this rate. For instance, an increase of 100 元 in your salary will be taxed -17.86 元, hence, your net pay will only increase by 118 元.
Bonus Example
A 1,000 元 bonus will generate an extra 1,179 元 of net incomes. A 5,000 元 bonus will generate an extra 5,893 元 of net incomes.