What Is the Green Card Test?
Green Card Test is a US tax residency rule under which any lawful permanent resident during a calendar year is treated as a resident alien.
Also known as: Lawful Permanent Resident Test, Green Card Residency Test.
How Green Card Test works
Green Card Test treats an individual as a United States resident for federal tax purposes if the individual is a lawful permanent resident at any time during the calendar year, meaning the individual holds the privilege of residing permanently in the United States as an immigrant, generally evidenced by Form I-551. Physical presence plays no part in the test, so a green card holder living abroad generally remains a resident alien, taxed on worldwide income with the same filing rules as a citizen. According to the IRS, the status continues until voluntarily renounced and abandoned in writing to USCIS, or administratively or judicially terminated, and for someone who does not also meet the substantial presence test, residency starts on the first day of presence in the United States as a lawful permanent resident. A tax treaty tie-breaker may treat a green card holder as resident of another country, but for a long-term resident the IRS treats claiming such treaty residence, without waiving treaty benefits and with notice on Forms 8833 and 8854, as ceasing lawful permanent residence for expatriation tax purposes.
Green Card Test vs Substantial Presence Test
Unlike the substantial presence test, which counts days physically spent in the United States, the Green Card Test depends only on immigration status at any time during the calendar year. A green card holder who spends little or no time in the United States can therefore remain a resident alien.
| Green Card Test | Substantial Presence Test | |
|---|---|---|
| Trigger | Lawful permanent resident status at any time in the calendar year | Days of physical presence in the United States |
| Effect of living abroad | Status generally continues until formally abandoned or terminated | Generally not met when time in the United States is limited |
| How residency ends | Written abandonment to USCIS, or administrative or judicial termination | Reduced presence in later years, subject to IRS rules |
Example
Illustrative example: A green card holder moves from the United States to Country A for a long-term work assignment and spends no days in the United States during the following calendar year. Because lawful permanent resident status has not been abandoned in writing or terminated, the Green Card Test generally still applies, so the individual remains a resident alien for United States tax purposes and reports worldwide income, while Country A may also treat the individual as tax resident under its own rules. A tax treaty between the United States and Country A, if one exists, may assign treaty residence to Country A. Yet a long-term resident who relies on that position and notifies the IRS on Forms 8833 and 8854 is treated by the IRS as ceasing lawful permanent residence, which can bring the expatriation tax rules into play.
Common misconception
Myth: A green card holder who leaves the United States and stops visiting is no longer a US tax resident.
Reality: Green Card Test residency generally continues until the status is abandoned in writing to USCIS or administratively or judicially terminated, regardless of days spent abroad.
Frequently asked questions
Do green card holders pay US tax on worldwide income?
Green Card Test residents are resident aliens for United States federal tax purposes, and the IRS states that resident aliens are taxed on worldwide income, generally under the same filing rules as citizens, including when living abroad.
How does a green card holder stop being a US tax resident?
Green Card Test residency generally ends when lawful permanent resident status is voluntarily renounced and abandoned in writing to USCIS, or administratively or judicially terminated, subject to IRS residency ending-date rules and possible expatriation tax consequences.
Can a tax treaty override the green card test?
A tax treaty tie-breaker can treat a Green Card Test resident as resident of another country, but for long-term residents the IRS treats claiming treaty residence, with notice on Forms 8833 and 8854, as ending lawful permanent residence.
Related terms
- Substantial Presence Test — Day-count alternative route to US tax residency
- Resident Alien — Status resulting from meeting the test
- Dual Status Alien — Status in years when residency starts or ends
- Tie-Breaker Rule — Treaty rule which may assign residence elsewhere
Related guides
- Permanent residence and tax: guide — Permanent residence and its tax effects
- Global tax reform and US digital nomads — US tax obligations for people abroad
Sources
- IRS, U.S. tax residency: green card test
- IRS, Expatriation tax
- IRS, U.S. citizens and resident aliens abroad
Last verified: 2026-10-08. This entry is general information, not tax or legal advice; rules vary by country and change over time.
