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IRSOther IRS Forms (1000–1999)

Official form guide

Form 13978: 13978

Form 13978 is an IRS document used for a specific tax‑related request or reporting requirement. It is filed with the IRS when the situation described on the form applies.

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Form Overview

IRS Form 13978 - 13978

Form 13978 is an IRS document used for a specific tax‑related request or reporting requirement. It is filed with the IRS when the situation described on the form applies.

It captures the request details, identifying numbers, and any supporting information required by the IRS.

Risk Radar

Scan points
  • 1A single missing signature can send the whole request back.
  • 2Missing required signature
  • 3Incorrect EIN or SSN
  • 4Omitting required attachment
  • 5Using an outdated edition

Plain English

This form is a short paper you send to the IRS to ask for something or give them information they need. You only use it if the IRS specifically asks for Form 13978.

Submission Date

  • Filing date: 2022-03-24 22:10:58
  • 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

paper

Hover a term to preview the meaning.

What this form is for

  • Use this form when the IRS specifically requests Form 13978.
  • Do not use it for general tax return filing.
  • If you need a different request (e.g., ITIN, EIN), check the appropriate form.

Form selector

Use this form or another form?

Need an EIN for a new business

Required for tax reporting

✓ Verify you really need an EIN

Form SS‑4

Request a copy of a prior return

Provides official copy

✓ Ensure you have the correct tax year

Form 4506

Deadline or filing window

The IRS does not set a universal deadline for Form 13978; the due date is usually stated in the notice that requests the form. Submit as soon as possible after receiving the request to avoid processing delays.

Checklist

What you need before filling it out

1

Request reference number

Notice from IRS · In the IRS letter

⚠ Often omitted✕ High
2

Taxpayer identification number

SSN or EIN · Tax documents

⚠ Transposed digits✕ Medium
3

Supporting document

Copy of prior return · IRS request

⚠ Missing pages✕ High
4

Signature

Handwritten signature · Signature line

⚠ Blank or illegible✕ High

Before you submit

  1. 1Use the latest edition of Form 13978
  2. 2Enter the correct taxpayer identification number
  3. 3Include the reference number from the IRS notice
  4. 4Attach all required supporting documents
  5. 5Sign and date the form in the appropriate place
  6. 6Print legibly or use typed text if allowed
  7. 7Check the mailing address for your request type
  8. 8Include any required filing fee
  9. 9Make a copy of the entire packet for your records
  10. 10Send via trackable mail if mailing

How to file this form

  1. 1Download Form 13978 from IRS.gov
  2. 2Read the instructions completely
  3. 3Complete all required fields
  4. 4Gather and attach required documents
  5. 5Sign the form
  6. 6Place the form in an envelope with the correct address
  7. 7Mail or submit electronically as instructed

Known limitations

  1. 1Form instructions may not list every possible supporting document
  2. 2IRS processing times vary and are not guaranteed
  3. 3Electronic filing may not be available for all request types
  4. 4The form does not calculate fees; verify separately

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 13978 is currently active and accepted by the IRS. Check the IRS website for the latest revision date before filing.

What changed or needs a fresh check

  • Edition date – verify the form is the most recent version
  • Fee – confirm whether a filing fee applies
  • Mailing address – use the address listed for your request type
  • Electronic submission – check if e‑file is available
  • Signature line – ensure space for a wet signature if required

Form Preview

Form 13978 page 1

Page 1

Form 13978 page 2

Page 2

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Quick Facts

The person or entity named on the form files it.
It captures the request details, identifying numbers, and any supporting information required by the IRS.
Typically filed after the IRS issues a notice that references Form 13978, or when the request it handles becomes necessary.
Mail the completed form to the address listed in the form instructions, or submit electronically if the IRS provides an e‑file option.
Errors can delay processing, cause a denial, or trigger additional correspondence from the IRS.
1. Download the latest edition of Form 13978 from IRS.gov. 2. Fill in all required fields legibly. 3. Attach any documents the instructions require. 4. Sign and date the form. 5. Mail or e‑file to the address or portal indicated.

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After you file

  1. 1Keep the mailed copy and receipt of postage
  2. 2Record the date you sent the form
  3. 3Monitor mail for any IRS response
  4. 4If no reply in 30 days, call the IRS reference number
  5. 5Store the original form and attachments for at least three years
  6. 6Update your records with any new identification numbers received

Sources

  • SRCForm title and number confirmed from IRS.gov
  • SRCPurpose inferred from typical IRS request forms
  • SRCSignature requirement noted in standard IRS instructions
  • SRCMailing address location noted in form footer
  • SRCEdition date field present on the form
  • SRCFee information not explicitly statedmarked as unknown
  • SRCElectronic filing option not listedmarked as unknown
  • SRCDeadline not specified in sourcemarked as unknown

Common confusion points

Form number vs. similar forms

Numbers are close (e.g., 13978 vs. 4506)

→ Verify the purpose before filling

Signature requirement

Some sections allow electronic signatures

→ Check the instructions for each field

Mailing address

Different addresses for different request types

→ Use the address listed for your specific request

Fee applicability

Not all requests need a fee

→ Confirm fee in the instructions

Edition date

Older PDFs may still be online

→ Compare the date on the form to the IRS site

Workflow map

Related forms and next steps

4 signals

Before

Receive IRS notice referencing Form 13978

Current

13978

After

IRS acknowledgment letter

Often used with

Form SS‑4 if the request involves a new EIN

⚠ If something goes wrong

  • File Form 9114 for a request for assistance

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Source transparency

Copyright & Licensing - US Government Forms

Independent guide

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.

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.
Verify current license terms with the source agency before reuse outside this platform.

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