Vietnam — Tax Residency (183 Days / Any 12 Months)
Summary
- Day threshold
- 183 days or more
- Window
- Calendar year, or 12 months from first arrival
- Triggers on
- Day 183 — track a 182-day cap
- Tracked as
- Every rolling 365-day window
- Also triggers
- Registered residence or fixed-term lease (no day count)
- Basis
- Law on Personal Income Tax No. 109/2025/QH15, Art. 2
- Authority
- Vietnam Tax Department (Ministry of Finance)
You are a Vietnamese tax resident once you are present for 183 days or more — either in a calendar year or in any 12 consecutive months from your first arrival. Because the statute triggers at 183, the last safe count is 182: that is Bounded’s cap, checked across every rolling 365-day window so that neither limb can slip past. A second limb catches anyone with a registered permanent residence or a fixed-term lease in Vietnam, with no day count at all.
Who it applies to
This matters most if you are:
- A remote worker basing part of the year in Ho Chi Minh City, Hanoi or Da Nang.
- An expatriate on assignment whose first arrival date, not 1 January, starts the clock.
- Someone holding a long lease on a Vietnamese apartment while travelling most of the year.
- A frequent business visitor whose trips have quietly added up across a 12-month window.
The arrival-anchored limb is the one people miss. Someone who lands in August and stays through March has never had 183 days in a single calendar year, but has comfortably passed 183 inside the 12 months from arrival.
The rule — and why it exists
Article 2 of the Law on Personal Income Tax No. 109/2025/QH15 — in force since 1 July 2026, replacing the 2007 law it expressly repeals — defines a resident individual as one who meets either of two conditions:
- The presence limb. “Being present in Vietnam for 183 days or more within a calendar year or within 12 consecutive months from the first day of arrival in Vietnam.”
- The residence limb. “Having a permanent residence in Vietnam, including having a registered permanent residence or renting a house in Vietnam under a fixed-term lease contract.”
The wording is carried over almost verbatim from the 2007 law, so the substance of the test has not changed — only the citation. Anything you read that anchors the rule to Law 04/2007/QH12 is now out of date.
Why it exists: the dual window is deliberately hard to game. A pure calendar-year test lets someone split a long stay across New Year; the arrival-anchored 12-month limb closes that. The residence limb closes the other gap — people who keep a home in Vietnam but keep their days low.
Counting the days
- 1Count every day of presence in Vietnam. Under the guidance issued for the previous law, arrival and departure days both count, and an in-and-out on the same day counts as one day.
- 2Check the calendar-year total: 183 days from 1 January makes you resident for that year.
- 3Check the arrival-anchored window too: 183 days inside the 12 consecutive months starting on your first day in Vietnam does the same.
- 4Bounded watches every rolling 365-day window with a 182-day cap, so a breach fires on day 183 in whichever window reaches it first.
- 5The residence limb has no count. If you have a registered permanent residence or a fixed-term lease, the day tests are beside the point.
The leap-year caveat. Twelve months is approximated as 365 days. In a leap year, 183 days spread across a 366-day span can peak at 182 in every 365-day window — so the counter can sit at the cap without formally breaching while the calendar-year test has already been met. Treat reaching the cap as being at the line, not one day short of it.
Examples
Example 1 — the clean year
Linh spends 160 days in Da Nang across the calendar year, staying in hotels and short-term rentals with no lease. No 365-day window reaches 183 and no residence limb applies. She is a nonresident, taxed only on Vietnam-source income.
Example 2 — the arrival-anchored trap
Marco lands on 1 September and stays until 30 April — 242 days. Neither calendar year holds 183, but the 12 months from his first arrival hold all 242. He is resident under the second half of the presence limb, and a calendar-year-only counter would never have shown it.
Example 3 — resident on 60 days
Amara signs a two-year lease on an apartment in Hanoi for her occasional visits, spending 60 days a year there. The fixed-term lease is a permanent residence for the purposes of Article 2, so she is resident regardless of the count.
Exceptions & edge cases
- The residence limb is easy to trip. A fixed-term lease is enough on the face of the statute. If you keep an apartment in Vietnam, assume the day count is not what decides your status.
- Guidance under the new law is pending. The day-counting conventions people rely on come from Circular 111/2013, issued under the repealed law. Successor guidance had not been issued when this article was written — check before relying on a single day’s margin.
- The first tax year is special. For someone whose first 12-month window straddles two calendar years, Vietnam has historically taxed the first period over the arrival-anchored window and then moved to calendar years. Confirm the mechanics for your own arrival date.
- Resident and nonresident rates differ in shape, not just level. Residents face progressive rates on worldwide employment income; nonresidents a flat 20% on Vietnam-source employment income. Crossing the line can cut your bill as easily as raise it.
- Treaty relief. Vietnam has a wide treaty network, and the standard 183-day employment article can protect short assignments even where domestic residency is triggered. Treaty positions need to be claimed, not assumed.
Common misconceptions
- "183 days is safe." No — the statute says 183 days or more. Day 183 is the trigger; 182 is the last safe count.
- "It resets on 1 January." Only the first limb does. The 12-months-from-arrival limb keeps running straight through New Year.
- "The 2007 PIT law still governs." It was repealed. Law 109/2025/QH15 has applied since 1 July 2026 — same test, new citation.
- "No days, no residency." A registered residence or a fixed-term lease makes you resident with no day count whatsoever.
- "A business visa keeps me out of the tax net." Visa class is irrelevant to the test. Only presence and residence matter.
Related: Thailand and Cambodia run similar tests with different windows — useful if you are rotating around the region.
Häufige Fragen
Both, and either one triggers residency. Article 2 of Law 109/2025/QH15 makes you resident if you are present in Vietnam for 183 days or more within a calendar year, or within 12 consecutive months counted from the first day of arrival. Bounded therefore watches every rolling 365-day window, which is the conservative superset of both tests.
Under the guidance issued for the previous law (Circular 111/2013) yes — arrival and departure days both count, and arriving and leaving on the same day counts as one day. Implementing guidance under the 2025 law is not yet out, so treat this as the working assumption rather than a settled rule and count conservatively.
Yes. The second limb of Article 2 makes you resident if you have a permanent residence in Vietnam — a registered permanent residence, or a house rented under a fixed-term lease. No day count applies to that limb, so a long lease can settle your status regardless of how little time you spend in the country.
Residents are taxed on worldwide employment income at progressive rates (currently running to 35%). Nonresidents are taxed only on Vietnam-source income, at a flat rate — 20% on employment income. For many people the flat nonresident rate is higher on small amounts and much lower on large ones, so the crossing point is worth modelling.
No. Law No. 109/2025/QH15, adopted on 10 December 2025, replaced Law 04/2007/QH12 and took effect on 1 July 2026. The residency test was re-enacted in essentially identical wording, so the numbers did not move — but the citation did, and the old law is expressly repealed.
No. The test is about presence and residence, not visa class. A business visa, a tourist e-visa, a temporary residence card and a work permit all put days on the same counter.
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