A Vietnam payslip deducts compulsory insurance first: 8% Social Insurance, 1.5% Health Insurance, and 1% Unemployment Insurance, 10.5% combined, applied to a contribution-base salary capped at ₫50,600,000/month from 1 July 2026. Whatever's left, minus the ₫15,500,000/month personal deduction (giảm trừ bản thân), is your taxable income.
That taxable income then runs through the new 2026 progressive schedule: five bands (5%, 10%, 20%, 30%, 35%) instead of the old table's seven, per the new Law on Personal Income Tax (Law 109/2025/QH15). Each band is wider than before, so less of a given salary lands in the lowest rates compared to the pre-2026 rules.
What this calculator deliberately leaves out is dependent deductions (₫6,200,000/month each, which would lower your taxable income further if you have dependents) and non-resident status, which is taxed completely differently at a flat 20% with no personal deduction.