Independent form guide. BrieflyGo is not affiliated with or endorsed by IRS, USCIS, SSA, DOL, or any U.S. government agency. Official forms are sourced from public government websites.
Official form guide
IRS Form 8966 is a FATCA Report used to provide identifying information about foreign financial accounts and entities to the IRS. If filing electronically, penalties under sections 6721 through 6724 may apply if not filed.
Need help with Form 8966?
Open it in the AI Editor for field guidance, checks, and PDF export.
Need help? AI Editor guides you through every field of Form 8966.
Start filling →Form Overview
IRS Form 8966 is a FATCA Report used to provide identifying information about foreign financial accounts and entities to the IRS. If filing electronically, penalties under sections 6721 through 6724 may apply if not filed.
Plain English
This form reports details about foreign bank or investment accounts that are subject to the Foreign Account Tax Compliance Act (FATCA). It helps the IRS track who owns these international assets and ensures proper tax compliance. Filers use this report when they are required to provide identifying information for certain financial entities.
Submission Date
AI co-pilot
Form selector
Acquiring accounts of another FFI in a merger or bulk acquisition
The successor assumes reporting obligations if regulations section 1.1471-4T(d)(2)(ii)(G)(1) through (4) are satisfied
✓ Check the specific requirements for merging/acquiring entities.
Reporting payments to non-exempt recipients under chapter 61
While Form 8966 is not used for these payments, an FFI may still be required to report them on a Form 1099.
✓ Check if the payment type mandates Form 1042 or Form 1042-S as well.
Reporting tax withheld under chapter 4 by a withholding agent
A withholding agent may file Forms 1042 and 1042-S in addition to filing Form 8966.
✓ Check if the payment requires reporting on both Form 8966 AND one of these supporting forms.
The Form 8966 reports activity during the calendar year. While a specific deadline is not stated, filers must file timely to avoid penalties under sections 6721 through 6724. No extension option is mentioned in the provided excerpts.
Checklist
Filing Deadline
March 31 of the year following the end of the calendar year · Instructions p.3
Electronic Filing Requirement
All financial institutions must file electronically; others are strongly encouraged · Instructions p.3
Reporting Model 2 FFI Deadline
Same as PFFI, unless a different date is specified in an applicable Model 2 IGA · Instructions p.3
Required Paper Submission Form
Form 8966-C, Cover Sheet for Form 8966 Paper Submissions · Instructions p.3
Currency Translation Method
U.S. dollars or the account/payment's denominated currency · Instructions p.8
PFFI Reporting Exception
PFFIs do not need to report accounts held by nonparticipating FFIs in Part II or Part V · Instructions p.1
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.
Almost done reviewing the fields?
Fillable formOpen in Editor->The current edition is 20/25. For the latest developments related to Form 8966, filers should consult IRS.gov/Form8966.
Quick Facts
Downloads
Who needs to file this form?
Filers listed under 'Who Must File' must report information regarding certain U.S. accounts, substantial U.S. owners of passive NFFEs, specified U.S. persons that own certain debt or equity interests in ODFFIs, and other applicable accounts.
→ Check the specific filer category requirements.
When is the deadline to file Form 8966?
The form must be filed on or before March 31 of the year following the end of the calendar year for which it is required.
→ Verify this date against any applicable Model 2 IGA if a different reporting date is specified.
What happens if the due date falls on a weekend or holiday?
The due date shifts to the next business day.
→ Confirm that the filing date aligns with the next available business day.
How do you request an automatic extension?
File Form 8809-I, requesting it as soon as the need is known but no later than the original due date.
→ Check the Instructions for Form 8809-I to confirm filing location and requirements.
When must a financial institution file electronically?
A financial institution is required to file Form 8966 electronically, regardless of the number of Forms 8966 filed.
→ Confirm your entity type matches 'financial institution'.
How do you request an additional extension?
File a second Form 8809-I before the end of the initial extended due date.
→ Ensure each branch submitting for an extension files its own separate Form 8809-I.
Workflow map
Before
Current
After
Often used with
⚠ If something goes wrong
This form reports details about foreign bank or investment accounts that are subject to the Foreign Account Tax Compliance Act (FATCA). It helps the IRS track who owns these international assets and ensures proper tax compliance. Filers use this report when they are required to provide identifying information for certain financial entities.
Filers include Direct Reporting NFFEs, Sponsoring Entities, and those filing on behalf of a Sponsored Direct Reporting NFFE. All filers must complete lines 1a through 3c in Part I.
Part I provides identifying information about the filer itself (e.g., filer's name on line 1a). Part II collects account holder or payee details, and Part IV reports specific income/proceeds for a calendar year.
The source does not state a specific filing deadline date, but it applies to accounts reported during the calendar year. If amending, the original Form 8966 must also be filed.
Paper Forms 8966 must be sent with Form 8966-C (Cover Sheet for Form 8966 Paper Submissions) to the specified IRS address. Those filing electronically refer to Pub. 5190 and Pub. 5188 for submission instructions.
First, complete Part I by entering the filer's name (line 1a) and other required identification. If not a Direct/Sponsoring NFFE, proceed to Part II for account holder details. Finally, fill out Part IV with payment amounts and check the appropriate box on line 3b if applicable.
If a filer is required to file Form 8966 electronically but fails to do so without an approved waiver, penalties under sections 6721 through 6724 may apply.
Filers listed under 'Who Must File' must report information regarding certain U.S. accounts, substantial U.S. owners of passive NFFEs, specified U.S. persons that own certain debt or equity interests in ODFFIs, and other applicable accounts. Check the specific filer category requirements.
Source transparency
BrieflyGo links to and explains official public form sources. We are not a government agency, and this page is for general form guidance, not legal advice.
Review risky clauses in plain English, fix the document, and keep it moving toward signature.