Filing Threshold

Filing Threshold

Katelynn Minott, CPA & CEO profile picture
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A filing threshold is the income level or tax situation that determines whether a taxpayer must file a U.S. tax return. For U.S. expats, the same federal filing thresholds apply even when they live abroad and earn income outside the United States.

Why it matters for U.S. expats

Many Americans abroad assume they do not need to file if they earn foreign income, pay tax in another country, or fall below the Foreign Earned Income Exclusion limit. The filing threshold is separate from whether tax is owed, so an expat may need to file Form 1040 even if the Foreign Tax Credit, Foreign Earned Income Exclusion, or other credits reduce the final U.S. tax bill to zero.

Common questions

1. Do U.S. expats have the same filing thresholds as taxpayers in the United States?

Yes. U.S. citizens and resident aliens use the same federal filing thresholds regardless of where they live.

2. What are the 2025 filing thresholds for U.S. expats under age 65?

For 2025 returns, most taxpayers under age 65 must file if gross income is at least $15,750 for single filers, $31,500 for married filing jointly, $23,625 for head of household, or $31,500 for qualifying surviving spouse. Married filing separately has a $5 filing threshold.

3. Does foreign income count toward the filing threshold?

Yes. Gross income includes foreign income unless that income is exempt from U.S. tax by law.

4. Does the Foreign Earned Income Exclusion change the filing threshold?

No. The Foreign Earned Income Exclusion can reduce taxable income after filing, but it does not remove the filing requirement when gross income meets the threshold.

5. Does the Foreign Tax Credit change the filing threshold?

No. The Foreign Tax Credit can reduce U.S. tax after filing, but it does not change whether a return is required.

6. Do self-employed U.S. expats have a lower filing threshold?

Yes. A U.S. expat with net earnings from self-employment of at least $400 must file a U.S. tax return.

7. Do married U.S. expats filing separately have to file at very low income?

Yes. Married filing separately has a $5 gross income filing threshold for 2025 returns.

8. Do dependents abroad have separate filing thresholds?

Yes. Dependents use separate filing rules based on earned income, unearned income, gross income, age, blindness, and marital status.

9. Should U.S. expats file even if they are below the filing threshold?

They may want to file if U.S. tax was withheld, they qualify for a refundable credit, they need to preserve filing history, or they need to claim an expat tax benefit for the year.

10. Can an expat owe no U.S. tax but still need to file?

Yes. Filing and owing tax are separate questions. Many expats must file because they meet the filing threshold, then owe no U.S. tax after credits, exclusions, and deductions.

When to get help

Professional guidance is important when:

  • You are unsure whether your foreign income meets the U.S. filing threshold.
  • You are married filing separately and have any gross income.
  • You are self-employed abroad and earned at least $400 in net self-employment income.
  • You have foreign pensions, investments, rental income, or business income.
  • You want to claim the Foreign Tax Credit or Foreign Earned Income Exclusion.
  • You are behind on U.S. tax returns and need to know which years were required.
  • You also have FBAR, FATCA, or other international reporting obligations.

Bright!Tax can confirm whether you need to file, identify the expat tax benefits available, and prepare the correct U.S. return from abroad. Get started with Bright!Tax.

Official sources

Reviewed by

Katelynn Minott, CPA & CEO

Last reviewed

July 2026

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