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Official form guide
Form W8IMY: W-8IMY
Form W‑8IMY is the Certificate of Foreign Intermediary, Foreign Partnership, or Certain U.S. Branches for U.S. tax withholding. It is used by foreign entities that receive payments on behalf of others and must report the allocation of those payments.
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IRS Form W8IMY - W-8IMY
Form W‑8IMY is the Certificate of Foreign Intermediary, Foreign Partnership, or Certain U.S. Branches for U.S. tax withholding. It is used by foreign entities that receive payments on behalf of others and must report the allocation of those payments.
Risk Radar
Scan points- 1A single typo can trigger a 30% backup withholding on all payments.
- 2Failing to allocate beneficiary shares correctly
- 3Omitting required FATCA classification
- 4Using an expired edition of the form
- 5Missing signature or date
Plain English
If you are a foreign company that passes U.S.‑source money to other people or entities, you fill out W‑8IMY so the payer knows how much tax to hold back and who ultimately gets the money. The form tells the IRS who the real owners are and what tax treaty benefits apply, if any.
Submission Date
- Filing date: 2021-11-18 22:10:48
- Preparation window: collect IDs, supporting records, and signatures in advance.
- Final review: verify names, dates, and required fields before submission.
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What this form is for
- Use when you are a foreign intermediary distributing U.S. source income.
- Do not use if you are an individual or a direct foreign payee; those use W‑8BEN or W‑8BEN‑E.
- If you are a foreign corporation receiving payments directly, file Form W‑8BEN‑E instead.
Form selector
Use this form or another form?
Direct foreign payee
Simpler, no allocation needed
✓ Confirm you are not acting as an intermediary
U.S. branch of a foreign corporation
Branch must report its own income
✓ Verify branch status with tax counsel
Foreign partnership with U.S. partners
Allocation to partners required
✓ Ensure each partner’s Form W‑8 is on file
Deadline or filing window
The form must be on file before the first payment subject to withholding is made. If the form expires or the entity’s circumstances change, a new W‑8IMY must be provided within 30 days of the change. No specific IRS deadline exists beyond the payer’s withholding schedule.
- —Beneficiary share % | Multiply total payment by share | Allocated amount | Ensure percentages total 100%
Checklist
What you need before filling it out
Part I – Entity name
Articles of incorporation or registration · Legal documents
FATCA status
FATCA self‑certification · Internal tax compliance file
Beneficiary allocation
Beneficiary agreements or ownership ledger · Partnership agreement
Signature
Authorized officer’s signature · Corporate resolution
Date
Current date · Calendar
Before you submit
- 1Form is the latest IRS edition
- 2All required fields are filled in legibly
- 3Beneficiary allocations total 100 percent
- 4FATCA classification matches internal records
- 5Signature and date are present
- 6Authorized officer’s title is printed
- 7Any required supporting documents are attached
- 8Copy of the completed form is retained
- 9Submitted to the correct payer contact
- 10Electronic file is in PDF format if e‑filing
- 11No blank boxes remain
How to file this form
- 1Download the current W‑8IMY PDF from IRS.gov.
- 2Print or open in an editable PDF program.
- 3Enter entity identification data (name, address, EIN/TIN).
- 4Complete FATCA status in Part II.
- 5List each beneficiary, their country, and allocation percentage.
- 6Review totals and add any treaty claim codes.
- 7Sign, date, and print the signatory’s title.
- 8Send the form to the payer’s designated withholding department.
- 9Keep a dated copy for your records.
Known limitations
- 1The form does not replace a beneficiary’s own W‑8 forms.
- 2IRS does not provide real‑time validation of allocation percentages.
- 3Only the payer can confirm acceptance; the IRS does not issue an acknowledgment.
- 4FATCA status fields are subject to change; periodic review is required.
Field map
Compact field-by-field guide
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->Check the latest revision on the IRS website; the current edition is dated October 2023. Verify that the form you have matches that date before completing it.
What changed or needs a fresh check
- Edition date – verify the form is dated October 2023 or later
- Fee – no filing fee required
- Mailing address – use the payer’s address, not the IRS
- Signature block – must be signed by an authorized officer
- Electronic submission – allowed only if the payer accepts e‑files
- Retention period – keep for at least three years after the last payment
Quick Facts
Downloads
After you file
- 1File the signed copy in a secure location for at least three years.
- 2Monitor payments for correct withholding rates.
- 3Update the form promptly if ownership or FATCA status changes.
- 4Record the date the payer confirmed receipt.
- 5Retain any correspondence from the payer regarding acceptance or rejection.
- 6Schedule a review before the three‑year renewal window.
- 7Document any backup withholding applied for future reference.
Sources
- SRCIRS Form W‑8IMY instructionsofficial PDF (IRS.gov)
- SRCIRS Publication 515Withholding of Tax on Nonresident Aliens and Foreign Entities
- SRCIRS FATCA guidanceclassification table
- SRCIRS websitelatest revision date October 2023
- SRCIRS instructionssignature requirements under penalty of perjury
- SRCIRS withholding agent responsibilitiesForm 1042‑S filing rules
- SRCNot found in provided sourceexact electronic submission policy
Common confusion points
Intermediary vs. direct payee
Many think any foreign entity uses W‑8IMY
→ Verify if you are allocating payments to others
Beneficiary allocation totals
Percentages often don’t sum to 100 %
→ Double‑check math before signing
FATCA status codes
Complex classifications can be mis‑selected
→ Use the IRS FATCA guidance sheet
Treaty claim vs. exemption
Users mix up treaty reduction with exemption
→ Confirm treaty eligibility separately
Signature authority
Some assume any employee can sign
→ Only an authorized officer may sign
Electronic vs. paper submission
Payers sometimes reject e‑files
→ Ask the payer for their preferred method
Workflow map
Related forms and next steps
Before
Current
After
Often used with
⚠ If something goes wrong
- Payor may issue a backup withholding notice and request a corrected W‑8IMY
Source transparency
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