Summary
If you make 249,000,000 ₫ a year living in Vietnam, you will be taxed 50,980,969 ₫. That means that your net pay will be 198,019,031 ₫ per year, or 16,501,586 ₫ per month. Your average tax rate is 20.5% and your marginal tax rate is 26.9%. 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 26.87 ₫, hence, your net pay will only increase by 73.13 ₫.
Bonus Example
A 1,000 ₫ bonus will generate an extra 731 ₫ of net incomes. A 5,000 ₫ bonus will generate an extra 3,657 ₫ of net incomes.