Summary
If you make € 20,537,400 a year living in Greece, you will be taxed € 9,034,524. That means that your net pay will be € 11,502,876 per year, or € 958,573 per month. Your average tax rate is 44.0% and your marginal tax rate is 44.0%. 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 € 44, hence, your net pay will only increase by € 56.
Bonus Example
A € 1,000 bonus will generate an extra € 560 of net incomes. A € 5,000 bonus will generate an extra € 2,800 of net incomes.