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EA Part 1 · Worked lesson

Nonresident and Expatriate Individual Returns

Determine U.S. tax residency before choosing the return or income base. A U.S. citizen living abroad is different from a nonresident alien, and working overseas is different from formally relinquishing citizenship or long-term residency.

Three cross-border situations, different rules

U.S. citizen or resident abroad

Starting treatment
Generally U.S. tax on worldwide income
Next test
Foreign earned income exclusion and foreign tax credit eligibility.

Nonresident alien

Starting treatment
Generally U.S.-source income and income effectively connected with a U.S. trade or business
Next test
Treaty, sourcing and Form 1040-NR requirements.

Substantial presence

Starting treatment
31 current-year days plus a weighted 183-day test
Next test
Excluded days, closer connection and treaty exceptions.

Formal expatriation

Starting treatment
Separate expatriation rules may apply
Next test
Covered-expatriate status and Form 8854, not merely an overseas address.
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For the July 2026-February 2027 SEE window: tax law through December 31, 2025; questions generally use calendar year 2025.

How to work through the decision

  1. 1Determine status
  2. 2Classify income and periods
  3. 3Apply relief and reporting rules

Apply the green-card and substantial-presence tests separately

A noncitizen can be a U.S. resident alien under the green-card test or the substantial-presence test. For substantial presence, generally require at least 31 countable days in the current year and at least 183 weighted days over three years. Count all current-year days, one-third of the preceding year’s days and one-sixth of the second preceding year’s days. Meeting only the 31-day requirement is insufficient.

Some days are excluded, including certain days for exempt individuals and other specified situations. “Exempt individual” in this context generally concerns counting days, not blanket exemption from U.S. tax. A closer-connection exception can require fewer than 183 actual current-year U.S. days, a foreign tax home, the required connection and timely documentation. Treaty residence provisions are another distinct analysis. Do not subtract days or invoke an exception without facts supporting it.

Match the income to the resident or nonresident regime

U.S. citizens and resident aliens generally report worldwide income. Nonresident aliens generally distinguish income effectively connected with a U.S. trade or business from U.S.-source fixed or determinable annual or periodical income. Effectively connected income generally uses graduated rates and permitted deductions. Other U.S.-source FDAP income is often subject to a 30% gross-basis rate unless a treaty or statutory rule changes the result.

Source is determined by the applicable income rule, not simply by the payer’s mailing address. Compensation generally follows where services are performed. Other categories, such as interest, dividends, rents and property gains, have their own rules. A treaty can reduce a rate without turning the taxpayer into a citizen or making all income exempt. Dual-status years require allocating the reporting treatment to the resident and nonresident periods.

Citizen or resident alien

Starting income scope
Generally worldwide income
Next test
Exclusions, credits and treaty coordination

Nonresident with effectively connected income

Starting income scope
Applicable U.S. business income
Next test
Graduated rates and allowed deductions

Nonresident with U.S.-source FDAP

Starting income scope
Generally gross income in that category
Next test
Statutory or treaty rate and exceptions

Foreign earned income relief has qualification and coordination rules

For the foreign earned income exclusion, a qualifying taxpayer needs a foreign tax home and must satisfy the applicable bona fide residence or physical presence test. The physical presence test generally requires 330 full days in foreign countries during a consecutive 12-month period. A foreign assignment lasting “about a year” is not proof that the exact full-day requirement is met. Travel days and the selected period matter.

The exclusion applies to qualifying earned income, not automatically to pensions, dividends or capital gains, and it does not by itself remove self-employment tax. Foreign taxes attributable to excluded income cannot also support a foreign tax credit. Living abroad is also different from formally expatriating by relinquishing citizenship or ending certain long-term residency; those facts can trigger separate Form 8854 and expatriation-tax rules. Identify that boundary instead of treating every overseas worker as subject to an exit tax.

Original worked example

The weighted substantial-presence test

An individual has 120 countable U.S. days in each of 2025, 2024 and 2023. Assume no excluded days or treaty/closer-connection exception.

  1. 1

    2025 days: 120.

  2. 2

    2024 weighted days: 120 ÷ 3 = 40.

  3. 3

    2023 weighted days: 120 ÷ 6 = 20; total = 180.

Result

The 183-day weighted test is not met, although the 31-day current-year condition is met.

The green-card test is independent and must still be considered.

Apply the method to different facts

Original worked case 2

A small day-count change changes the starting classification

A noncitizen has 150 countable U.S. days in 2025, 90 in 2024 and 60 in 2023. Assume no green card, excluded days, closer-connection exception or treaty override.

  1. The current-year 31-day condition is met.
  2. Weighted days = 150 + (90 ÷ 3) + (60 ÷ 6) = 190.
  3. The 183-day threshold is met. Determine the applicable residency starting date rather than assuming every day of the year was a resident day.

The substantial-presence test is met under the assumptions. If current-year days were 140, the weighted total would be 180 and that test would fail.

Mistakes to catch

  • Counting all three years at full weight.
  • Claiming a foreign tax credit on income excluded under the foreign earned income exclusion.

Check your understanding

Does moving abroad end a U.S. citizen’s filing obligations?

No. U.S. citizens generally remain subject to U.S. tax on worldwide income, with filing thresholds and possible exclusions, credits and additional reporting rules.

2. Does qualifying for the foreign earned income exclusion automatically eliminate SE tax?

Answer: No.

The income-tax exclusion and self-employment-tax system are separate. Any other applicable relief requires its own analysis.

3. A worker receives payment from a foreign company for services performed in the United States. Is the payer’s location enough to make it foreign-source compensation?

Answer: No. Compensation generally follows where the services are performed.

Identify the income category and its sourcing rule. The payer’s address does not supply one universal rule for all receipts.

Put the rule into practice

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Sources and scope

Source check: . IRS and PSI materials support the factual rules. Worked cases and suggested study sequences are original educational examples, not official exam questions or IRS study requirements.

Use the version applicable to your testing window. Live IRS pages can advance to a later tax year. These notes are exam study material; examples state simplifying assumptions.