If you make $ 2,000,000 a year living in Taiwan, you will be taxed $ 303,022. That means that your net pay will be $ 1,696,978 per year, or $ 141,415 per month. Your average tax rate is 15.2% and your marginal tax rate is 21.4%. 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 $ 21.41, hence, your net pay will only increase by $ 78.59.
A $ 1,000 bonus will generate an extra $ 786 of net incomes. A $ 5,000 bonus will generate an extra $ 3,930 of net incomes.