Summary
If you make 699,999,976 ₫ a year living in Vietnam, you will be taxed 191,249,992 ₫. That means that your net pay will be 508,749,984 ₫ per year, or 42,395,832 ₫ per month. Your average tax rate is 27.3% and your marginal tax rate is 36.3%. 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 36.32 ₫, hence, your net pay will only increase by 63.68 ₫.
Bonus Example
A 1,000 ₫ bonus will generate an extra 637 ₫ of net incomes. A 5,000 ₫ bonus will generate an extra 3,184 ₫ of net incomes.