Summary
If you make 500,499,996 ₫ a year living in Vietnam, you will be taxed 125,539,374 ₫. That means that your net pay will be 374,960,622 ₫ per year, or 31,246,719 ₫ per month. Your average tax rate is 25.1% and your marginal tax rate is 32.9%. 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 32.87 ₫, hence, your net pay will only increase by 67.13 ₫.
Bonus Example
A 1,000 ₫ bonus will generate an extra 671 ₫ of net incomes. A 5,000 ₫ bonus will generate an extra 3,357 ₫ of net incomes.