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IRSOther IRS Forms (1000–1999)

Official form guide

Form 14039B: 14039-B

IRS Form 14039‑B is the Identity Theft Affidavit for businesses. It is filed when a business believes its taxpayer identification number has been used fraudulently.

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Form Overview

IRS Form 14039B - 14039-B

IRS Form 14039‑B is the Identity Theft Affidavit for businesses. It is filed when a business believes its taxpayer identification number has been used fraudulently.

The form collects the business’s name, EIN, contact information, a description of the suspected fraud, and a signed statement under penalty of perjury.

Risk Radar

Scan points
  • 1A missing or incorrect signature will cause the IRS to reject the affidavit and delay resolution.
  • 2Missing EIN or entering the wrong number
  • 3Leaving the signature line blank
  • 4Failing to describe the fraudulent activity clearly
  • 5Omitting supporting documents referenced in the notice

Plain English

If a company’s EIN shows up on a tax return that wasn’t authorized, the business fills out this short form to tell the IRS about the theft. The affidavit lets the IRS pause processing and investigate the fraud.

Submission Date

  • Filing date: 2021-05-24 22:10:22
  • Preparation window: collect IDs, supporting records, and signatures in advance.
  • Final review: verify names, dates, and required fields before submission.

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Glossary Terms

identificationidentitypenaltyfraud

Hover a term to preview the meaning.

What this form is for

  • Use when a business’s EIN is used on a fraudulent return.
  • Do not use for individual identity‑theft cases (use Form 14039).
  • If the IRS has already issued a CP01/CP02 notice, check that notice for a different required form.

Form selector

Use this form or another form?

Individual victim

Individual affidavit only; business not covered

✓ Verify taxpayer type before filing

Form 14039

Business needs to amend a return

Amendment, not identity theft

✓ Use only after fraud is resolved

Form 1120‑X

IRS requests a power of attorney

Authorization, not fraud report

✓ Submit only if representation is needed

Form 2848

Deadline or filing window

The IRS does not set a strict deadline, but the affidavit should be filed immediately after discovering the theft or after receiving an IRS notice. Delaying beyond 30 days can increase the risk of additional fraudulent filings.

Checklist

What you need before filling it out

1

Business name and EIN

Articles of incorporation or EIN confirmation letter · Business records

⚠ Misspelled name or transposed EIN✕ High
2

Description of fraud

Copy of the fraudulent return or notice · IRS notice or third‑party filing

⚠ Vague language or missing dates✕ Medium
3

Signature

Authorized officer’s signature · Corporate resolution or officer list

⚠ Blank or unauthorized signature✕ High
4

Supporting documents

Copies of the fraudulent return, notice, or correspondence · IRS notice or third‑party filing

⚠ Attachments omitted✕ High

Before you submit

  1. 1Verified the form edition date matches the current tax year
  2. 2Entered the correct EIN (no transposition errors)
  3. 3Provided a clear, concise description of the fraudulent activity
  4. 4Signed and dated by an authorized corporate officer
  5. 5Attached all documents referenced in the IRS notice
  6. 6Used the correct mailing address or fax number from the instructions
  7. 7Included a prepaid return envelope if mailing
  8. 8Made a copy of the entire packet for internal records
  9. 9Checked postage and envelope size
  10. 10Confirmed no fee is required
  11. 11Ensured the form is printed on white 8.5" x 11" paper
  12. 12Reviewed for any stray marks or erasures

How to file this form

  1. 1Read the IRS notice that triggered the filing to identify required attachments
  2. 2Download the latest Form 14039‑B from IRS.gov
  3. 3Complete the business identifying information and fraud description
  4. 4Have an authorized officer sign and date the affidavit
  5. 5Gather and attach all supporting documents referenced in the notice
  6. 6Place the packet in a properly addressed envelope with correct postage
  7. 7Mail or fax to the address/fax number in the current instructions
  8. 8Log the mailing date, tracking number, and keep a copy for your files

Known limitations

  1. 1The form does not resolve the underlying tax liability; a separate resolution may be required
  2. 2No electronic filing option; paper submission only
  3. 3IRS processing time varies; no guaranteed response window
  4. 4The form does not replace a formal audit or investigation request

Field map

Compact field-by-field guide

6 fields

General Info

2 items

Taxpayer Name and TIN

Full legal name and taxpayer identification number (SSN or EIN).

Requiredtext
Address

Current mailing address.

Requiredtext

Details

2 items

Required Information

Complete all applicable sections of this form according to the official IRS instructions.

Requiredtext
Amount (if applicable)

Enter the relevant dollar amount if this form involves tax calculation.

amount

Certification

1 items

Certification Statement

Read and acknowledge any certifications required by this form.

Requiredcheckbox

Signatures

1 items

Signature

Sign and date. Unsigned forms cannot be processed.

Requiredsignature
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Current form status
IRS

Form 14039‑B is active for the 2024 tax year and later. The IRS updates the form annually; verify the edition date before filing.

What changed or needs a fresh check

  • Edition date – confirm the form is dated 2024 or later
  • Fee – none required for this affidavit
  • Mailing address – use the address in the current instructions
  • Fax number – verify if you choose fax submission
  • Signature block – ensure an authorized officer signs
  • Paper size – standard 8.5" x 11"

Form Preview

Form 14039B page 1

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Form 14039B page 2

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Quick Facts

The business entity (corporation, partnership, LLC, etc.) that is the victim of identity theft files the form.
The form collects the business’s name, EIN, contact information, a description of the suspected fraud, and a signed statement under penalty of perjury.
File as soon as the fraud is discovered, typically before the IRS processes the disputed return or when the IRS notifies the business of a problem.
Mail the completed form to the IRS address listed in the instructions for the specific tax year, or fax it if the instructions provide a fax number. No electronic upload is available.
Incorrect or incomplete information can delay the IRS investigation, allowing the fraud to continue and potentially causing penalties or loss of refunds.
1. Review the IRS notice that triggered the filing. 2. Complete the business’s identifying details and describe the fraudulent activity. 3. Have an authorized officer sign and date the affidavit. 4. Attach any supporting documents (e.g., copy of the fraudulent return). 5. Mail or fax to the address in the instructions and keep a copy for your records.

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After you file

  1. 1File the mailing receipt or fax confirmation in the business’s tax folder
  2. 2Mark the date of submission on the internal fraud‑tracking log
  3. 3Monitor IRS correspondence for acknowledgment or further requests
  4. 4If no response within 30 days, call the IRS Identity Theft hotline
  5. 5Update the business’s internal controls to prevent future misuse of the EIN
  6. 6Retain all copies for at least three years
  7. 7Notify any affected third parties (e.g., banks) of the identity‑theft report

Sources

  • SRCForm title and purposeIRS instructions for Form 14039‑B
  • SRCEligibilitybusiness victim of identity theft per IRS guidance
  • SRCSignature requirementaffidavit signed under penalty of perjury
  • SRCMailing addresslisted in the current year’s instructions
  • SRCNo electronic filingIRS filing options section
  • SRCFeeIRS instructions state no fee
  • SRCEdition dateform header shows 2024 edition
  • SRCSupporting documentsinstructions note attachment of notice or fraudulent return

Common confusion points

Confusion: Form 14039‑B vs. 14039

Why it happens: similar names but different taxpayer types

→ Safe check: Verify whether the victim is a business or an individual

Confusion: Mailing address vs. fax number

Why it happens: instructions list both

→ Safe check: Use the address/fax listed for the current tax year

Confusion: Signature authority

Why it happens: multiple officers may exist

→ Safe check: Confirm the signer is listed on the corporate resolution

Confusion: Supporting documents required

Why it happens: notice may reference different items

→ Safe check: Attach exactly what the notice cites

Confusion: Deadline urgency

Why it happens: no formal deadline printed

→ Safe check: File within 30 days of discovery to limit exposure

Workflow map

Related forms and next steps

4 signals

Before

Form 1040‑X (if a corrected return is needed)

Current

14039B

After

Follow‑up notices (CP01, CP02) may be issued after the affidavit

Often used with

Form 2848 (Power of Attorney) when a representative is involved

⚠ If something goes wrong

  • File a new Form 14039‑B with corrected information

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Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
Public DomainCreated by the U.S. federal government. Not subject to copyright (17 USC § 105). Freely copyable without restriction.
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