The choice between Form W-8 and Form W-9 comes down to one thing: your U.S. tax residency status, not your immigration status. Green card holders living abroad may be able to sign Form W-8 under a U.S. income tax treaty, but picking the wrong form means signing a false statement under penalty of perjury. And claiming treaty benefits carries a risk that many people never see coming. Consulting an experienced attorney before signing anything is essential.
Table of contents:
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What is the difference between Form W-8 and Form W-9?
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What happens if you sign the wrong form?
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Why is this more complicated for green card holders living abroad?
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What did the court decide in Aroeste v. United States, and why does it matter?
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What are the benefits of successfully claiming non-resident status under a treaty?
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What is the risk on the other side?
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What does covered expatriate status mean for your family?
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Do you need an attorney before making this decision?
What is the difference between Form W-8 and Form W-9?
Both forms tell your bank or financial institution whether you are a U.S. tax resident or not. Form W-9 is for U.S. residents, who must pay U.S. taxes on income they earn anywhere in the world. Form W-8BEN is for non-residents, who generally only pay U.S. taxes on certain types of income that come from U.S. sources. The form you sign has real legal consequences, not just administrative ones.
What happens if you sign the wrong form?
Signing either form is a certification made under penalties of perjury. If you are a U.S. tax resident and you sign Form W-8, you are making a false statement, and serious legal consequences may follow.
Why is this more complicated for green card holders living abroad?
U.S. citizens always sign Form W-9, with no exceptions. For everyone else, it depends on tax residency status. Green card holders are generally treated as U.S. tax residents even while living in another country, which would normally mean they sign Form W-9. But there is an important exception: if the country where they live has an income tax treaty with the United States, they may be able to claim non-resident status under that treaty and sign Form W-8 instead. There are important unintended tax consequences that can befall individuals here: see, Oops…Did I “Expatriate” and Never Know It: Lawful Permanent Residents Beware! International Tax Journal, CCH Wolters Kluwer, Jan.-Feb. 2014, Vol. 40 Issue 1, p9).
The United States has 58 income tax treaties that together cover 66 countries. That includes the 1973 U.S. and U.S.S.R. income tax treaty, which still applies today to nine former Soviet republics: Armenia, Azerbaijan, Belarus, Georgia, Kyrgyzstan, Moldova, Tajikistan, Turkmenistan, and Uzbekistan.
What did the court decide in Aroeste v. United States, and why does it matter?
Aroeste v. United States (Case No. 22-cv-00682-AJB-KSC) is a federal court decision that established a 5-step analysis for green card holders who have not formally given up their green card but are living abroad. The key question the court addresses is whether a green card holder qualifies to be treated as a resident of a foreign country under an applicable U.S. income tax treaty. This ruling matters for the more than 3 million LPRs who are living outside the United States.
(Patrick W. Martin of Chamberlain Hrdlicka served as lead counsel for the taxpayer in this case. Read his full analysis of Aroeste v. United States here.)
What are the benefits of successfully claiming non-resident status under a treaty?
If a green card holder qualifies as a non-resident under a tax treaty, they may be able to stop filing U.S. federal income tax returns on their worldwide income. They may also no longer be required to file the Foreign Bank Account Report, known as the FBAR, which would help them avoid the significant penalties that come with missing that filing. The court in Aroeste laid out the specific steps required to make this claim correctly.
One important note: if you claim non-resident status under a treaty but fail to report that treaty position to the IRS on time, you face a separate penalty under IRC Section 6712(a) of $1,000 for each failure to timely file. Claiming treaty status correctly and reporting it on time are both required.
What is the risk on the other side?
Claiming treaty-based non-resident status may also legally end your U.S. tax residency. Under IRC Section 7701(b)(6), this shift may cause you to cease to be a lawful permanent resident of the United States. That change may trigger the U.S. expatriation tax rules under IRC Section 877A(g)(3), which could classify you as a covered expatriate. The Aroeste court did not address these consequences because they were not part of that case, but they are real and potentially serious.
What does covered expatriate status mean for your family?
Covered expatriate status does not only affect you. If your family members or friends in the United States later receive gifts or an inheritance from you, they may owe U.S. tax on those transfers under the covered gift and covered bequest rules. This may affect children, spouses, and anyone else who would receive something from you.
Do you need an attorney before making this decision?
The answer depends on which country you live in, which treaty applies, the value of your assets, and your long-term plans. Getting it wrong may trigger exit taxes, affect your family’s inheritance, and have consequences that cannot easily be undone. This post explains the framework but is not a substitute for legal advice specific to your situation.
If you are an attorney, read this post instead.
