Before you start

Know the test: more than 183 days aggregated in any one-year period
An employer registered with the Lao tax authorities
Records of income and any tax paid abroad
A Lao accountant if you have anything other than a plain salary

Step-by-step

1
Work out your residence position
Individuals are treated as resident if they stay in Lao PDR for periods aggregating more than 183 days in any one-year period. Both Lao nationals and foreigners meeting that threshold pay Lao personal income tax on Lao-sourced income.
OnlineWho: YouOngoingFree
2
Let your employer withhold
Employers calculate and withhold personal income tax from salary and remit it to the tax authorities. For a straightforward employee this is the whole of the process, and your evidence that it is happening is a payslip showing the deduction.
Via employerWho: Your employerMonthlyWithheld from salary
3
Understand the bands
Lao personal income tax is progressive on monthly income: nothing on the first LAK 2.5 million, then 5% to LAK 5 million, 10% to LAK 15 million, 15% to LAK 25 million, 20% to LAK 65 million, and 25% above that. Equivalent annual bands run from 0% up to 25% above LAK 780 million.
OnlineWho: YouOncePer the bands
4
Watch what the kip does to your bands
The bands are set in kip. In a period of currency depreciation and double-digit inflation, a salary that rises to keep pace in real terms pushes you up nominal bands. This is ordinary fiscal drag, but it moves faster here than in most places — check whether the bands have been revised before assuming last year's figures hold.
OnlineWho: You (with an adviser)AnnuallyFree to check
5
Handle your home-country position separately
Laos has a limited treaty network and your home country's rules are unaffected by anything here. Take advice in your own jurisdiction, particularly if you are a national of a country that taxes on citizenship or has strict deemed-residence rules.
OnlineWho: YouAnnuallyAdviser's fee

Documents you’ll need

Passport with entry and exit stamps — your day-count evidence
Employment contract and payslips showing withholding
Work permit and stay permit card
Records of any foreign income and foreign tax paid
Home-country tax filings if you remain taxable there

Things most newcomers don’t know

183 days aggregated in any one-year period — not the calendar year.

The Lao residence test looks at periods aggregating more than 183 days in any one-year period, which is a rolling measure. For a region where people move between Vientiane, Bangkok and a home country on a rotating basis, that is a meaningfully different question from 'was I here for more than half of this calendar year'. Count both forwards and backwards from any date you care about.

Source: PwC Worldwide Tax Summaries — Lao PDR, taxes on personal income

The bands are in kip, and the kip has moved a long way.

Lao personal income tax bands are denominated in kip, and the currency fell roughly 60% against the dollar between 2022 and 2025 with inflation still around 10% in 2026. A dollar-linked salary converted to kip climbs nominal bands quickly. It is a real effect on take-home pay that nothing in a foreign-currency employment contract makes visible.

Source: PwC Worldwide Tax Summaries; World Bank and ADB Lao PDR economic monitoring

There is no provincial or local income tax, which simplifies one thing at least.

Unlike several regional neighbours, Lao PDR levies no provincial or municipal income tax, so living in Vientiane rather than elsewhere in the country makes no difference to your personal income tax position. Given how little else about Lao administration is simple, this is worth knowing.

Source: PwC Worldwide Tax Summaries — Lao PDR

Published English-language guidance is thin, so get local advice earlier than you would elsewhere.

Lao tax administration is less documented in English than Thailand's or Vietnam's, and practice can differ from the statute in ways that are hard to research remotely. For a plain employee with withholding this rarely matters. For anyone consulting, running a Lao entity, or with income arriving from abroad, a Lao accountant is not a luxury — it is the only reliable source of an answer.

Source: editorial assessment of available sources; Lao law-firm guidance

Common mistakes to avoid

Testing residence against the calendar year when the rule is a rolling one-year period
Assuming kip-denominated tax bands are unchanged from last year
Working without a payslip and having no evidence that tax was ever withheld
Assuming a double-tax treaty exists between Laos and your home country
Treating this guide as advice for anything other than a plain withheld salary

Some of this may be out of date. Spotted something inaccurate? Help us keep it right for the next newcomer.