Summary
If you make 829,920,000 ₫ a year living in Vietnam, you will be taxed 239,775,120 ₫. That means that your net pay will be 590,144,880 ₫ per year, or 49,178,740 ₫ per month. Your average tax rate is 28.9% and your marginal tax rate is 37.4%. 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 37.35 ₫, hence, your net pay will only increase by 62.65 ₫.
Bonus Example
A 1,000 ₫ bonus will generate an extra 627 ₫ of net incomes. A 5,000 ₫ bonus will generate an extra 3,133 ₫ of net incomes.