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Official form guide
IRS Form 8966C is the Cover Sheet for Form 8966 Paper Submissions, used to transmit paper Forms 8966 to the IRS by the due date specified in those forms' instructions.
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IRS Form 8966C is the Cover Sheet for Form 8966 Paper Submissions, used to transmit paper Forms 8966 to the IRS by the due date specified in those forms' instructions.
Plain English
This form acts as a cover sheet when you are mailing in physical copies of Form 8966. It tells the Internal Revenue Service what type of Form 8966s you are sending—like originals or corrections—and how many there are. You must send this entire page along with your Forms 8966.
Submission Date
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Transmitting corrected, amended, or voided reports
This form must be used to transmit each type of Form 8966 separately (per line 1).
✓ Ensure all attached Forms 8966 are marked consistently with the box checked on Line 1.
Filing electronically
If filing electronically, you do not need to use Form 8966-C.
✓ Confirm that electronic submission is appropriate based on hardship waiver status.
Transmitting original reports
Use a separate Form 8966-C for each type of Form 8966 being sent (original, amended, corrected, voided).
✓ Verify the correct box on Line 1 matches the report type attached.
The Form 8966-C must accompany the paper Forms 8966 by the due date specified within the instructions for those accompanying forms. The source does not specify an extension period for filing via this cover sheet, but it mandates timely submission.
Checklist
Name of filer
The name of the person or entity submitting the form · Top identifying information section
Type of paper (Line 1)
Check one box: Original, Amended, Corrected, Voided · Line 1 check boxes
Number of paper Forms 8966 attached (Line 2)
The total count of accompanying Form 8966 documents · Line 2 field
GIIN/TIN
GIIN if assigned by IRS, otherwise EIN · Top identifying information section
Mailing Address
Internal Revenue Service FATCA, Stop 6052 AUSC 3651 South IH 35 Austin, Texas 78741 · Where and when to file instructions
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->The current edition is Revision December 2016 (Rev. 12-2016). The source does not point to a separate page for the latest information, but it provides all necessary details on Form 8966-C itself.
Quick Facts
Downloads
What should I do if I am submitting multiple types of Form 8966 (e.g., one original and one amended)?
Each type must be transmitted with a separate Form 8966-C, so you need more than one cover sheet for different report types.
→ Check the box on Line 1 for each distinct type of paper Form 8966 being submitted.
Do I still need to use Form 8966-C if I am filing electronically?
If Forms 8966 are submitted electronically, do not use Form 8966-C.
→ Only use the cover sheet when transmitting paper Forms 8966 to the Internal Revenue Service.
How many copies of Form 8966 should I attach if I check 'Original' on Line 1?
The number of attached forms is entered on Line 2, and you must ensure all attached Forms 8966 are correctly marked as original.
→ Verify the count listed on Line 2 matches the physical count of the attached paper Forms 8966.
If I have a GIIN, where do I put it? What if I don't have one?
If you have been assigned a Global Intermediary Identification Number (GIIN) by the IRS, enter that number on the line for GIIN. If you do not have a GIIN, enter your EIN on the line for TIN.
→ Confirm the number entered matches either your official GIIN or your Employer Identification Number (EIN).
What if I am submitting a corrected Form 8966? Do all attached forms need to be marked as 'Corrected'?
If this transmittal is submitting corrected reports, ensure all attached Forms 8966 submitted under this cover sheet are correctly marked and consistent with the box checked on Line 1.
→ Check the 'Corrected' box on Line 1 and visually confirm every attached Form 8966 bears the correct marking.
Where exactly do I send the Form 8966-C and the paper Forms 8966?
Send them to: Internal Revenue Service FATCA, Stop 6052 AUSC 3651 South IH 35 Austin, Texas 78741.
→ Confirm the mailing address matches this specific location.
What if I am submitting a Voided Form 8966? Does that mean it was filed incorrectly?
Not stated in the official source — verify on the agency site (though typically 'Voided' means the report is canceled or invalid).
→ Ensure you check the 'Voided' box on Line 1 and attach the corresponding paper Form 8966.
Must I sign the cover sheet before sending it?
Yes
the form requires a signature declaration:
I declare that I have examined this return and accompanying documents and, to the best of my knowledge and belief, they are true, correct, and complete."
Locate the 'Sign Here' section on the page and affix your signature.
Workflow map
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⚠ If something goes wrong
This form acts as a cover sheet when you are mailing in physical copies of Form 8966. It tells the Internal Revenue Service what type of Form 8966s you are sending—like originals or corrections—and how many there are. You must send this entire page along with your Forms 8966.
The filer is anyone transmitting paper Forms 8966, which relates to the FATCA Report. The identifying information on Form 8966-C must match what is entered on the accompanying Forms 8966.
The form collects the filer's name and Taxpayer Identification Number (TIN) or Global Intermediary Identification Number (GIIN). Line 1 requires checking the type of paper Form 8966 being transmitted, and Line 2 requires entering the number of attached Forms 8966.
The Form 8966-C must be sent by the due date specified in the instructions for Form 8966. The form itself has an estimated average completion time of 7 minutes.
Form 8966-C and the paper Forms 8966 should be sent to: Internal Revenue Service FATCA, Stop 6052 AUSC 3651 South IH 35 Austin, Texas 78741. If filing electronically (and not having a hardship waiver), this cover sheet is not used.
First, fill out all required identifying information at the top of Form 8966-C. Next, check only one box on Line 1 to indicate if the Forms 8966 are Original, Amended, Corrected, or Voided. Finally, sign and date the form where indicated before sending it in.
If the identifying information on Form 8966-C does not match the Forms 8966, or if you fail to check only one box on Line 1, the submission may be incorrectly processed by the Internal Revenue Service.
Each type must be transmitted with a separate Form 8966-C, so you need more than one cover sheet for different report types. Check the box on Line 1 for each distinct type of paper Form 8966 being submitted.
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