Summary
If you make 166,285,600 ₫ a year living in Vietnam, you will be taxed 30,783,830 ₫. That means that your net pay will be 135,501,770 ₫ per year, or 11,291,814 ₫ per month. Your average tax rate is 18.5% and your marginal tax rate is 23.9%. 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 23.93 ₫, hence, your net pay will only increase by 76.07 ₫.
Bonus Example
A 1,000 ₫ bonus will generate an extra 761 ₫ of net incomes. A 5,000 ₫ bonus will generate an extra 3,804 ₫ of net incomes.