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Official form guide
Form W‑14 is the IRS application for an automatic 6‑month extension to file Form 1120‑F, the U.S. Income Tax Return of a foreign corporation. Use it when the foreign corporation cannot meet the original filing deadline.
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Form W‑14 is the IRS application for an automatic 6‑month extension to file Form 1120‑F, the U.S. Income Tax Return of a foreign corporation. Use it when the foreign corporation cannot meet the original filing deadline.
Plain English
If a foreign company needs more time to finish its U.S. tax return, it files this short form to ask the IRS for a six‑month extension. The request is simple, but the IRS must receive it before the original due date.
Submission Date
AI co-pilot
Form selector
Need more than 6 months
Allows up to 6 months for many returns, but not 1120‑F
✓ Verify eligibility
Requesting relief from penalty
Used for claim of refund or abatement
✓ Confirm penalty type
The extension request must be received by the IRS on or before the original Form 1120‑F due date. If the request arrives after that date, the extension is not granted and penalties may apply. The IRS does not provide a separate deadline beyond the original filing date.
Checklist
Corporation name
Articles of incorporation · Tax return header
Employer Identification Number
IRS EIN assignment letter · EIN confirmation page
Tax year
Prior year Form 1120‑F · Tax year box
Signature
Authorized officer ID · Signature line
Mailing date
Postmark or fax transmission log · Envelope or fax cover sheet
Field map
Personal Info
2 items
Your legal name and current mailing address.
Your taxpayer identification number — must match IRS records.
Filing Status
1 items
Single, Married Filing Jointly, or Head of Household (for withholding purposes).
Dependents
1 items
Number of qualifying children and other dependents.
Adjustments
1 items
Additional income not from jobs or adjustments to withholding.
Withholding
1 items
Additional amount you want withheld from each paycheck.
Certification
1 items
Your tax entity type: Individual, Corporation, Partnership, etc.
Signatures
1 items
Sign and date to certify under penalty of perjury.
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Fillable formOpen in Editor->Form W‑14 is active for tax years 2022‑present. The IRS updates the form annually; verify the edition date before filing.
Quick Facts
Downloads
Extension length
W‑14 only gives 6 months, not unlimited
→ Verify you need exactly 6 months
Who can sign
Only an authorized corporate officer may sign
→ Check corporate bylaws for signatory authority
Mailing address
Different IRS centers for domestic vs. foreign filings
→ Use the address in the W‑14 instructions
Electronic vs. paper
Some IRS forms accept e‑filing, W‑14 does not
→ Submit paper only
Form number
W‑14 is for 1120‑F, not other returns
→ Confirm you are filing a foreign corporation return
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