In Vietnam, a foreigner's personal income tax depends first on whether they are tax resident. In broad terms you are resident if you are in Vietnam for 183 days or more in a calendar year, or in twelve consecutive months from your first arrival, or if you have a habitual residence in Vietnam such as a registered permanent residence or a lease covering 183 days or more in the tax year. Residents are taxed on their worldwide income, with employment income taxed on a progressive scale after personal and family deductions. Non-residents are taxed only on income arising in Vietnam, with employment income generally taxed at a flat 20 percent and no deductions.
This guide explains how the residency test works in practice, what counts as Vietnamese-source income, how employment income is taxed, which benefits are commonly taxable, and how the system interacts with your employer. Vietnam's personal income tax rules were being substantially revised in 2025 and 2026, including deduction amounts and the bracket structure, so this article stays at the level of principles and avoids quoting brackets or deduction figures. Confirm the rules for the year that concerns you with the tax authority or a qualified accountant.
The residency test, in detail
Vietnam's test has two limbs, and meeting either one makes you resident for the tax year. The first is physical presence: 183 days or more in Vietnam within a calendar year, or within twelve consecutive months starting from the day you first arrive. Days are counted from passport stamps and immigration records, with the day of arrival and the day of departure together counted as one day. Short trips out of the country do not reset the count; they simply remove the days you were away.
The second limb is a habitual residence in Vietnam. For foreigners this generally means either a registered permanent residence, shown on a permanent residence card, or a rented home with a lease, or leases, covering 183 days or more in the tax year. Hotels, guesthouses and employer-provided accommodation can count as rented homes for this purpose. A foreigner who meets this limb but is physically present for fewer than 183 days may be able to show that they are tax resident in another country, with a certificate of tax residence, and so be treated as non-resident in Vietnam.
The twelve-month rule means a person who arrives in, say, October can become resident for a first tax year that runs into the following calendar year. The guidance has specific rules for this first year, and it is one of the points where advice is most useful.
Residents and non-residents compared
The table summarises the long-standing structure. Details, including rates on some types of income, are subject to the revisions mentioned above.
| Aspect | Tax resident | Non-resident |
|---|---|---|
| Income taxed | Worldwide income, wherever paid | Income arising in Vietnam only |
| Employment income | Progressive scale, after personal, dependant and compulsory insurance deductions | Flat rate, generally 20 percent, on gross Vietnamese-source employment income |
| Deductions | Personal deduction, deductions for registered dependants, compulsory insurance, certain charitable contributions | None |
| Annual finalisation | Required in most cases, by the employer on authorisation or by the individual | Generally not required; tax is final when withheld |
| Relief for tax paid abroad | Credit for foreign tax on foreign income, within limits, and under double tax agreements | Not usually relevant, since foreign income is outside the scope |
The difference in outcome can be large. A non-resident earning a modest salary pays a higher effective rate than a resident on the same salary, because the resident's lower brackets and deductions reduce the tax. A resident with substantial investment income abroad may pay more, because that income enters the Vietnamese calculation. Neither status is always better; it depends on your income profile.
What counts as income arising in Vietnam
For employment income, the key factor is where the work is performed, not where the employer is or where the salary is paid. Salary for work physically carried out in Vietnam is Vietnamese-source income even if a foreign company pays it into a foreign account. This matters for remote workers and for employees seconded to Vietnam who remain on a home-country payroll. In both cases the income is within the scope of Vietnamese tax for the days worked in Vietnam, whatever the contract says.
For a non-resident, the tax applies to the Vietnamese-source part only. For a resident, all employment income is taxable anyway, but the source question still matters for crediting tax paid abroad and for double tax agreements, which allocate taxing rights between countries.
Other categories follow their own source rules. Income from selling property in Vietnam, dividends from Vietnamese companies, interest from Vietnamese banks and rental income from Vietnamese property are all Vietnamese-source and taxed in Vietnam regardless of residence, often at flat rates on the gross amount or under specific regimes. For example, the transfer of real estate has long been taxed at a flat percentage of the transfer price, and leasing out property is taxed under its own rules for individual business income. Check current rates before any sale or lease.
Benefits that are commonly taxable
Housing provided by the employer. Rent paid by an employer is generally treated as taxable income, but the guidance has limited the taxable amount to a portion of the employee's other taxable income. The exact treatment depends on how the lease is structured, so ask payroll how it is handled.
Cash allowances. Cost-of-living, hardship, transport and similar allowances paid in cash are generally taxable, unless a specific exemption applies. Some allowances set by law or within regulated limits are exempt.
Bonuses and thirteenth-month pay. Bonuses are taxable employment income in the month they are paid, which can push income into a higher bracket for that month and is reconciled at finalisation.
Insurance premiums paid by the employer. Premiums for some voluntary insurance products bought by the employer for the employee can be taxable. Compulsory social, health and unemployment insurance contributions are treated differently and are deductible for residents.
Benefits with favourable treatment. The guidance has treated certain expatriate benefits favourably, such as a once-yearly home-leave airfare and, under conditions, school fees for employees' children in Vietnam paid by the employer. Conditions apply, and the revisions may change them, so confirm before relying on any exemption.
How your employer handles it
For most foreign employees of Vietnamese companies, personal income tax is handled through payroll. The employer registers you for a tax code, withholds tax monthly from salary at the resident or non-resident method as appropriate, files declarations and pays the tax to the authority. At the end of the year, employees with income from that single employer can usually authorise it to carry out the annual finalisation on their behalf.
Problems arise when the employer's picture of your situation is incomplete. Payroll may not know that you have a second source of income, that you have registered dependants, that your residency status has changed, or that you have income from abroad. In those cases the withholding may be wrong, and you may need to finalise yourself. Tell HR about anything relevant, and ask for a copy of the certificates of tax withheld each year.
Employees seconded by a foreign company, contractors and people paid from abroad sit outside this neat arrangement. They may need to register and declare tax themselves, sometimes quarterly. If no one is withholding tax for you in Vietnam and you are working here, that is a reason to speak to an accountant now rather than later.
Three hypothetical cases
The examples below are invented to show how the test plays out. They are illustrations, not rulings; real cases depend on documents and the guidance in force.
- The teacher who arrives in August. She arrives on a work visa in mid-August with a one-year contract and a twelve-month lease. Within the calendar year she is present for fewer than 183 days, but her lease gives her a habitual residence, and within twelve months of arrival she will clearly pass 183 days. She is likely to be treated as resident from the start, with a first tax year counted from her arrival, which an accountant should map out.
- The consultant on short trips. He makes several trips a year of a few weeks each, staying in hotels, for a total well under 183 days, and is tax resident at home with a certificate to prove it. He is likely to be non-resident in Vietnam, taxed at the flat rate on income for work done during his visits, subject to any treaty relief.
- The retiree with a long lease. She signs a one-year lease in Da Lat but spends half of each year with family abroad. The lease may create a habitual residence even if her days fall short of 183, so her position depends on whether she can show tax residence elsewhere. This is exactly the situation in which advice before signing the lease pays for itself.
The common thread is that residency is determined by facts on the ground, such as days, leases and certificates, rather than by what a contract or visa says.
Social insurance contributions for foreign employees
Alongside income tax, foreign employees in Vietnam are generally brought into the compulsory insurance system. Under the social insurance rules that took effect for foreigners from 2018, foreign nationals working under labour contracts of sufficient length and holding a work permit or similar are required to contribute to social insurance, with the employer also contributing. Health insurance has long been compulsory for employees. Exceptions have existed, for example for intra-corporate transferees and for people who have reached retirement age, and the rules were updated again by a new Law on Social Insurance effective in 2025.
For tax purposes, the employee's share of compulsory contributions is deductible from taxable income for residents. For financial planning, ask whether contributions can later be claimed as a lump sum if you leave Vietnam before qualifying for a Vietnamese pension, how any totalisation agreement between Vietnam and your home country affects you, and how contributions appear on your payslip. Your employer's HR team or the social insurance office can confirm the details.
Mistakes foreigners make with income tax
Most problems come from assumptions carried over from home or from earlier postings elsewhere.
- Assuming a foreign payroll means no Vietnamese tax. Work done in Vietnam is generally taxable in Vietnam, wherever you are paid.
- Counting days loosely. The 183-day count follows immigration records. Keep your own log of entries and exits so you know when you cross the line.
- Forgetting foreign income once resident. Rental income from a flat at home, interest and dividends abroad and side income are within the scope of Vietnamese tax for residents, subject to treaty relief.
- Not registering dependants. Residents can claim deductions for qualifying dependants only after registering them with supporting documents. Many foreigners never do and pay more than necessary.
- Ignoring the home country. Becoming resident in Vietnam does not automatically end tax obligations at home. Some countries tax citizens abroad; others need a formal step to stop treating you as resident.
- Leaving without settling. Departing at the end of a contract without finalising tax can delay transfers of savings and, in serious cases, lead to an exit suspension on a return visit.
An hour with an accountant who handles expatriate tax in Vietnam, at the start of your first year, usually costs less than any one of these mistakes.
Câu hỏi thường gặp
Do foreigners pay income tax in Vietnam?
Yes. Foreigners who earn income in Vietnam are subject to personal income tax. Tax residents are taxed on worldwide income, with employment income on a progressive scale after deductions; non-residents are taxed on Vietnamese-source income only, with employment income generally at a flat 20 percent. Employers usually withhold the tax from salary.
How is the 183-day rule counted in Vietnam?
Days are counted from immigration records, either within the calendar year or within twelve consecutive months from your first arrival. The arrival and departure days together count as one day. Presence of 183 days or more on either basis makes you tax resident, and a habitual residence can also make you resident.
Is remote work income taxable in Vietnam?
Income from work physically performed in Vietnam is generally Vietnamese-source, even if paid by a foreign company into a foreign account. Whether you owe tax, and how, depends on your residency and on any double tax agreement. The separate question of whether your visa permits the work also needs checking.
Can I be tax resident in two countries?
Yes, it happens, because each country applies its own rules. Double tax agreements contain tie-breaker rules, based on factors such as permanent home and centre of vital interests, to decide which country treats you as resident for treaty purposes. A tax adviser can apply the relevant treaty to your situation.
Are my children's school fees taxable if my employer pays them?
The guidance has allowed favourable treatment for school fees for foreign employees' children studying in Vietnam when paid by the employer, subject to conditions. Because the personal income tax rules have been under revision, confirm the current position with your employer's payroll team or an accountant.
What happens if I don't pay tax in Vietnam?
Unpaid tax attracts late-payment interest and penalties, and the tax authority can take enforcement steps, including requesting a temporary suspension of exit from Vietnam for individuals with overdue tax debts. It can also block outward transfers of savings. Settling tax promptly avoids these consequences.