Payroll Administration in Vietnam

Each month the employer files and remits insurance contributions for every employee to the social security authority. Personal income tax is withheld with the payroll and, since 1 July 2026, declared to the tax authority quarterly, with a full year finalisation after the year closes. Workforce change reports go to the provincial labour authority twice a year, and occupational safety reporting is annual where it applies.

The practical consequence is that payroll cannot be reconciled once a year. A joiner or a leaver changes the contribution file for that month, a salary change moves the contribution base, and a change in an expatriate's residence position changes the withholding rate for the whole year. Each of those needs to be reflected in the month it happens, because contributions are filed monthly and the evidence is the submission receipt.

It also has to reconcile outwards. The contributions and withholding that come out of the payroll cycle land in the accounting records and the corporate tax return. Where payroll, accounting and tax sit with different providers, the difference between the payroll register and the books is one of the most common audit findings, and it is usually discovered long after the period it relates to.

The first is whether the employee falls inside the insurance scheme. Foreign employees with a work permit or equivalent and a Vietnamese employment contract of twelve months or more are within social and health insurance, unless they are intra-company transferees or have reached retirement age when the contract is signed, and they are outside unemployment insurance. Where a bilateral social security agreement applies, the position can differ, so the basis is documented at onboarding rather than assumed.

The second is tax residence. A resident is taxed on a progressive scale with deductions available; a non resident is taxed at a flat rate on Vietnam employment income and cannot claim them. Residence depends on presence and on where the individual has a habitual place of abode, it can change during an assignment, and it determines the withholding rate for the whole year rather than for the month in which it is noticed.

The third is income that does not come from the Vietnamese payroll. Where part of the package is paid by the parent company, a housing allowance is settled abroad or an equity award vests, it still belongs in the Vietnamese finalisation. We handle expatriate payroll as a distinct track inside each engagement for exactly this reason, and confirm the residence position with the client before the annual finalisation is filed.