Quick Summary: Living six months in Vietnam and six months abroad is possible, but each type of document has its own "day counter." The six-month rhythm usually suffices to maintain permanent residency in Canada or the U.S., but not enough to qualify for citizenship. It can also cause you to lose public health insurance and raise questions about tax residency in both countries. Before choosing this lifestyle, count days by each goal, not by feeling.
"Winters in Vietnam for Lunar New Year, summers abroad with grandchildren." This is the most common wish we hear from families over 50. It sounds very reasonable: avoid cold, avoid heat, keep work and relationships at home, and still have a foothold abroad.
The problem is each type of document counts days differently, and many families only discover this once they've already made mistakes. Some keep their green card but never meet citizenship requirements in ten years. Some lose provincial health insurance in Canada right when they need surgery. Some face tax residency questions from both countries simultaneously.
This article does not say "should" or "should not." It helps you count days correctly before you plan your schedule.
Why Is the Six-Month Rhythm a Danger Zone?
Six months is a number that falls right at the threshold of many regulations. Staying slightly longer or slightly shorter can push you to completely different outcomes:
- For permanent residency: many countries start questioning whether you've abandoned your residence after six months of continuous absence.
- For citizenship: most countries require you to be present more than half the time during the eligibility period.
- For taxes: the 183-day threshold within a year is the common standard to determine tax residency, in Vietnam and many other countries.
- For public health: some provinces and states require a minimum number of days of presence each year to maintain benefits.
- For visas: people who have acquired another nationality returning to Vietnam also face time limits for each stay.
In other words, a perfectly "split 50-50" schedule is not inherently safe. It is only safe when you know which goal you're optimizing for.
Clock Number One: Maintaining Permanent Residency Status
This is the baseline goal. Losing it means losing your foundation.
| Location | Rule for Maintaining Status | Is Six-Month Rhythm Safe? |
|---|---|---|
| Canada – Permanent Resident | At least 730 days in the past 5 years | Usually yes: six months in Canada is roughly 900 days over 5 years |
| United States – Green Card | No fixed number, but long absences are reviewed as abandonment; one year or more without a re-entry permit carries very high risk | Safe if each trip is under six months and you maintain home, job, and tax filing in the U.S. |
| United Kingdom – Indefinite Leave to Remain (ILR) | Usually lost if you leave continuously for more than 2 years | Safe |
| Australia – Permanent Resident | Permanent residency visa has travel rights; extending the right to return usually requires having been in Australia at least 2 years in the past 5 years | Safe if counted correctly |
| Greece Golden Visa | No minimum presence requirement to maintain the card | Safe |
| UAE Golden Visa | Exempted from the rule of losing residency if outside for more than 6 months, applies to standard residence visa | Safe |
Specifically for the U.S., we always emphasize: do not let each stay in Vietnam reach six months. Five and a half months is different from six months and one day in the eyes of border officers and future citizenship records.
Clock Number Two: Meeting Citizenship Requirements
This is where most families stumble, because they think "keeping the card means I'll get citizenship eventually."
Canada requires 1,095 days of physical presence within the 5 years before you submit your citizenship application—roughly 219 days per year on average. A six-month rhythm gives you only about 180 days. You can keep your permanent resident card indefinitely, but you will never meet citizenship eligibility if you maintain that rhythm.
The U.S. requires physical presence for at least half the time during the 5-year period (or 3 years if married to a U.S. citizen), plus continuous residence. An absence over six months can be viewed as breaking continuous residence; over one year is almost certainly a break. The six-month rhythm sits right on the edge of both requirements.
European countries require even longer: several years of legal residence, and many check days of absence year by year. The summary table of years required by each country is in the article years of residency required for citizenship.
Real lesson: If citizenship is your goal, concentrate your time abroad in the first few years to accumulate enough days, then later switch to the two-location rhythm. Doing it the other way means the citizenship clock never runs fast enough.
If your family already has a second citizenship through investment—Caribbean programs, for example—then this clock is irrelevant; the two-location lifestyle becomes much easier.
Clock Number Three: Public Health and Insurance
Few pay attention until they need it.
In Canada, health insurance is managed by provinces, and each has its own presence requirements. For example, Ontario requires at least 153 days in 12 months; British Columbia requires at least 6 months in the calendar year. There are exceptions for one long trip, but you must apply and there are limits. Exceeding the threshold means you can lose coverage and must wait to regain it when you return.
In the U.S., private insurance and Medicare do not cover medical treatment in Vietnam, except for a few plans with international provisions. Many families therefore carry two layers of insurance: one in the foreign country, one for the months in Vietnam.
We don't advise on insurance, but the question to ask your agent should be very specific: "How many consecutive days can I be outside the country before my coverage lapses, and if I become ill in Vietnam, who pays?"
The Tax Clock: 183 Days Is Not the Only Criterion
The 183-day threshold appears in Vietnam's personal income tax law and that of many countries, but it is not the only criterion. A permanent home, the location of your center of economic interest, and where your family lives are also considered. Someone living six months in each place can easily be considered a tax resident by both countries, and tax treaties to avoid double taxation (if they exist) become the deciding factor.
We don't advise on taxes. The only thing we strongly recommend is: sit down with tax specialists in both countries before you start the two-location rhythm, not after the first year. The article I have foreign documents, which country do I file taxes in explains the concepts so you ask the right questions.
Returning to Vietnam on Which Documents?
If you still hold only Vietnamese nationality, there is nothing to worry about: return to Vietnam on your Vietnamese passport with no time limits.
If you have acquired another nationality, it depends:
- Still holding Vietnamese nationality and an unexpired Vietnamese passport: entering Vietnam on your Vietnamese passport is the simplest. How to manage carrying two passports at different legs of your journey is covered in the article which passport to use for entry when holding dual citizenship.
- No longer holding a Vietnamese passport: you can apply for a visa exemption certificate for Vietnamese nationals residing abroad and their spouses, children, and relatives. The certificate has a maximum validity of 5 years, with each entry allowing a stay of up to 180 days under current regulations.
- Using e-visas or visa exemptions based on your new nationality: each entry is shorter in duration, not compatible with a six-month rhythm.
With a two-location rhythm, the 5-year visa exemption certificate is almost essential for someone who has given up or no longer holds a Vietnamese passport.
Two Houses, One Life: Hidden Costs
People living in two places usually count airfare and overlook the rest.
| Item | Why It's Often Forgotten |
|---|---|
| House left vacant for six months | Many home insurance contracts limit claims if the house is vacant beyond a certain period; requires someone to watch it and check regularly |
| Vehicle | You still pay insurance and registration fees even if the car sits in the garage for six months |
| Phone number | Losing a foreign phone number means losing two-factor authentication for banking, taxes, healthcare |
| Bank accounts | Some banks review accounts when they see transactions primarily from another country |
| Letters from tax agencies, immigration, and courts arrive at an empty house; missing deadlines creates real problems | |
| Driver's license, document renewals | Renewal deadlines fall right during your six-month absence |
A simple but effective tip: mail forwarding service or a trusted family member authorized to open mail, plus a shared checklist of renewal deadlines for the whole household.
The Downside: Who Should Not Live in Two Places
We see this rhythm as not suitable for three groups:
- Families with school-age children. Schools do not accept half-year attendance. If children stay in one place and parents travel, the family is effectively split.
- People counting days toward citizenship. As analyzed above, this rhythm means the clock never runs fast enough.
- People with chronic illness requiring continuous monitoring. Two healthcare systems, two doctors, medical records that don't connect.
The two-location rhythm works best for: retirees or remote workers, adult children, and those who already hold citizenship or documents not tied to minimum stay requirements. There is one feeling few mention: living in two places for years, many people find themselves "guests" in both. That is why some families decide to choose one side after a few years—we describe that journey in the article returning to Vietnam after years abroad.
Next Steps
Do one simple thing before you book your flights: take a sheet of paper, create five columns—permanent residency, citizenship, healthcare, taxes, visa—and write the day threshold for each category according to the documents you currently hold in each country. Only then plan your schedule.
If you are still choosing a country, add "does it allow living in two places?" to your criteria from the start. The program recommendation tool helps filter countries with light residency requirements, compatible with this lifestyle.
