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Official form guide
Form 8858 is the Information Return for Foreign Disregarded Entities (FDEs) and foreign branches of U.S. persons. File it to report income, assets, and activities of an FDE owned by a U.S. person.
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Form 8858 is the Information Return for Foreign Disregarded Entities (FDEs) and foreign branches of U.S. persons. File it to report income, assets, and activities of an FDE owned by a U.S. person.
Plain English
If you own a foreign company that the IRS treats like a “disregarded” entity, you must tell the IRS about its earnings and assets each year. The form is a simple data sheet, not a tax bill, but it must be accurate and on time.
Submission Date
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Form selector
Foreign corporation owned by U.S. person
Requires detailed ownership and income info
✓ Verify entity classification before filing
Foreign partnership owned by U.S. person
Captures partnership items, not disregarded entity items
✓ Check partnership agreement
U.S. person with foreign branch activity
Branch income reported on corporate return
✓ Confirm branch vs. entity status
Form 8858 must be filed by the due date (including extensions) of the U.S. owner’s income tax return. If the owner files an extension, the form can be submitted with the extended return. No separate deadline exists.
Checklist
Entity name
Certificate of incorporation or registration · Entity documents
EIN or foreign TIN
IRS EIN assignment letter or foreign tax ID certificate · Tax authority documents
Foreign address
Bank statement or utility bill · Entity’s official address
Income amount
Financial statements or bank statements · Year‑end profit & loss
Tax withheld
Foreign tax return or withholding statement · Withholding certificate
Field map
Entity Info
1 items
Name and taxpayer ID of the entity claiming the credit.
Credit Info
1 items
Type of credit or incentive being claimed.
Calculation
2 items
The base amount used to calculate the credit.
Calculated credit amount after applying formulas and limitations.
Certification
1 items
Detailed breakdown supporting the credit calculation.
Signatures
1 items
Sign and date the form.
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Fillable formOpen in Editor->Form 8858 is active for tax years beginning on or after January 1, 2014. The latest revision is the 2024 edition. Check the IRS website for any updates before filing.
Quick Facts
Downloads
Disregarded entity vs. foreign corporation
Misclassification leads to wrong form
→ Verify entity’s U.S. tax classification first
Tax year alignment
Owner’s calendar year vs. entity’s fiscal year
→ Use the owner’s tax year for reporting
EIN vs. foreign TIN
Both appear on the form
→ Ensure each number is placed in the correct box
Reporting foreign assets
No specific asset schedule provided
→ Attach a simple schedule if assets are material
E‑file support
Not all software includes Form 8858
→ Confirm with the software vendor before preparing
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