An individual is a Vietnamese tax resident if he or she meets either of two tests in the personal income tax law: a physical presence test based on the number of days spent in Vietnam within a calendar year or a run of consecutive months, or a habitual residence test based on having a registered permanent residence or a rented home in Vietnam under the conditions the law sets. Anyone who meets neither is a non-resident.
The distinction changes almost everything: a resident is taxed on worldwide income at progressive rates on employment income, with family deductions; a non-resident is taxed only on Vietnam-source income, at flat rates and without deductions. For an expatriate on a short assignment, a rotation or a first year that starts mid-year, the answer may not be obvious — and it should be worked out before payroll starts, not at finalisation.
The documents behind the tests
The residence tests are in the Law on Personal Income Tax, which was revised in the recent tax reform. Its implementing documents issued in mid-2026 are Decree 253/2026/ND-CP guiding the PIT law and Circular 87/2026/TT-BTC detailing it. For earlier years, the long-standing guidance was Circular 111/2013/TT-BTC. We name the 2026 texts so you know where to look; we do not summarise their articles, and you should read the current version of the tests — including how days are counted — before relying on them.
We deliberately do not quote the day-count threshold or the progressive rate bands in this guide. The day count has been stable for many years, but the rate schedule was revised in the reform, and a figure copied from an old guide is the most common source of error in expatriate payroll. Check both in the text in force for the year you are working on.
Test one: physical presence
The presence test counts days in Vietnam over a defined period — the calendar year, or a period of consecutive months starting from the first day of arrival. The rules specify how arrival and departure days are counted. Two consequences follow:
- A first year can straddle two periods. An assignee who arrives in the second half of a year may not meet the test for that calendar year but may meet it for the consecutive-month period that starts on arrival. Model both before deciding how to withhold.
- Short trips add up. A regional manager based in Singapore or Bangkok who spends a few days in Vietnam every week can reach the threshold without ever moving. Travel calendars, not job titles, decide this.
Keep passport entry and exit records, or immigration records, for every year of the assignment. When residence is questioned, the burden of showing the day count falls on the individual and the employer, and reconstructing travel two years later is slow.
Test two: habitual residence
Even with fewer days in Vietnam, an individual can be resident if he or she has a habitual residence here: a registered permanent residence, or a rented house or apartment in Vietnam under a lease that meets the duration conditions in the law. The rules also address the case where the individual can show tax residence in another country.
For employers this test matters when the company rents an apartment for an assignee on a long lease. A lease signed in the company's name for the assignee's use can still be relevant to the assignee's residence. If the intention is that a short-term visitor remains non-resident, check how any housing arrangement interacts with the test before signing it.
What residence changes
| Question | Resident | Non-resident |
|---|---|---|
| Which income is taxed | Worldwide income | Income arising in Vietnam |
| Employment income | Progressive rates on taxable income after deductions | Flat rate on gross Vietnam-source employment income |
| Family deductions | Yes: VND 15.5 million per month for the taxpayer and VND 6.2 million per month per registered dependant, from the 2026 tax year | No |
| Annual finalisation | Yes, under the finalisation rules | Generally no annual finalisation for employment income |
The family deduction figures come from Resolution 110/2025/UBTVQH15 and apply from the 2026 tax year. The flat non-resident rate and the progressive bands are set by the PIT law; check the current figures.
Worldwide income is the part that surprises new assignees. A resident expatriate who keeps a rental flat, a bonus from a previous employer or investment income at home can have Vietnamese tax to declare on it, with credit for foreign tax paid under the rules and any applicable tax treaty.
When two countries both claim you
An individual can be resident under Vietnamese law and under the law of his or her home country at the same time. Vietnam has a network of double taxation agreements that contain tie-breaker rules for this situation — typically looking in turn at permanent home, centre of vital interests, habitual abode and nationality. The outcome depends on the treaty between the two countries and on the facts, so the analysis has to be done for the specific pair of countries.
Treaty relief is not automatic. To rely on a treaty in Vietnam, the individual or the employer usually needs a certificate of tax residence from the other country and must follow the notification procedure the Vietnamese rules set. Treaty-specific rates and conditions are not something to assume from a general guide; read the treaty and the procedure, or ask an adviser to confirm the position in writing.
Mid-year changes: arrivals, departures and extensions
- Arrival. Payroll often starts by withholding at the non-resident flat rate until residence is clear, then switches. Whatever approach you take, document why, and reconcile at finalisation.
- Extension. A short assignment extended past the threshold turns a non-resident into a resident for that period. The earlier months need to be recalculated, not just the months after the extension.
- Departure. An expatriate who ends the assignment is generally required to finalise tax before leaving Vietnam, and the employer often handles it. Plan the timing so that final pay, bonuses and benefits in kind are included.
- Remote work. Days worked in Vietnam for a foreign employer still count, and income for work performed in Vietnam is Vietnam-source even if paid abroad.
A starting checklist for HR and the assignee
Most residence problems are avoidable if a few facts are collected when the assignment is planned, not when the first query arrives. Before the first payroll run for an incoming expatriate, HR should hold:
- Expected arrival date and assignment length, with the planned travel pattern — whether the assignee will commute from another country, and how often.
- Housing arrangements: who signs the lease, for how long, and whether the family will live in Vietnam.
- Home-country position: whether the assignee remains tax resident at home, and whether a certificate of residence may be needed to rely on a treaty.
- Pay structure: what is paid in Vietnam, what is paid abroad, and which benefits the company provides in kind.
- Dependants who will move and may be registered for the family deduction if the assignee is resident.
With these facts, payroll can choose a withholding basis for the first months and record the reasoning. Revisit the analysis at each extension, change of travel pattern or change of housing. The same file answers most questions at finalisation, and it is also what an auditor asks for when residence is challenged.
Assignees themselves should keep a simple travel log alongside passport stamps. Immigration records can be requested, but a contemporaneous log is faster and usually settles questions about particular days.
Where to check your own position
An expatriate with a Vietnamese tax code can see filed returns and payments in the individual e-tax account and through the mobile tax app. The employer's withholding returns are visible in the company's e-tax account. For Vietnamese citizens, the personal identification number has replaced the separate personal tax code since 1 July 2025; foreign individuals continue to use the tax code assigned to them. When in doubt about which tax office manages your file, the taxpayer information lookup shows it.
Frequently asked questions
I arrived in Vietnam in September. Am I a resident for this year?
Possibly not for the calendar year, but you may be for the consecutive-month period that starts on your arrival. Count your days under both periods as the current rules define them and decide the withholding basis with your employer.
Does renting an apartment make me a tax resident?
It can. A rented home in Vietnam under a lease that meets the conditions in the law is part of the habitual residence test. Check the lease duration and the other conditions before assuming you are non-resident.
As a resident, do I pay Vietnamese tax on rent from my flat at home?
Residents are taxed on worldwide income, so foreign rental income is generally declarable in Vietnam, with credit for foreign tax paid under the rules and any applicable treaty. Keep the foreign tax documents.
Can a non-resident claim the family deduction?
No. The family deductions — VND 15.5 million per month for the taxpayer and VND 6.2 million per dependant from the 2026 tax year — are for residents.
How do I use a tax treaty to avoid double taxation?
Obtain a certificate of tax residence from the other country and follow the Vietnamese notification procedure. The outcome depends on the specific treaty, so read it or have an adviser confirm the position.
Do I need to settle my tax before leaving Vietnam for good?
Generally yes: an expatriate ending an assignment is required to finalise before departure, and the employer often handles it. Include final pay, bonuses and benefits so nothing is left open.
