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IRSOther IRS Forms (4000–6999)

Official form guide

Form 6729C: 6729-C

IRS Form 6729‑C is the application for an automatic 6‑month extension to file certain exempt‑organization returns. Use it when the organization cannot meet the original filing deadline.

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Form Overview

IRS Form 6729C - 6729-C

IRS Form 6729‑C is the application for an automatic 6‑month extension to file certain exempt‑organization returns. Use it when the organization cannot meet the original filing deadline.

The form captures the organization’s name, EIN, tax year, original due date, and the reason for the extension request.

Risk Radar

Scan points
  • 1A single missing signature can invalidate the entire extension request.
  • 2Missing the original filing deadline
  • 3Incorrect EIN or tax year entered
  • 4Signature omitted or illegible
  • 5Using an outdated form edition

Plain English

If a nonprofit or other tax‑exempt group needs more time to finish its annual return, it files Form 6729‑C. The IRS then grants a six‑month extension without a separate approval request.

Submission Date

  • Filing date: 2025-09-26 22:10:08
  • 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

monthgroup

Hover a term to preview the meaning.

What this form is for

  • Use when you need a six‑month automatic extension for a tax‑exempt return.
  • Do not use for for‑profit entities or for extensions longer than six months.
  • Check Form 990‑EXT if you need a longer or special extension.

Form selector

Use this form or another form?

Need more than six months

Allows extensions beyond six months

✓ Verify eligibility before filing

Form 990‑EXT

Filing a late return without prior extension

Penalties may apply

✓ Consider filing and paying any tax due immediately

Form 990‑F

Deadline or filing window

The extension request must be filed on or before the original due date of the return (usually the 15th day of the 5th month after the tax year ends). If the request is late, the IRS will not grant the automatic extension and penalties may apply. The six‑month extension period starts the day after the original deadline.

  • —Original due date | +6 months | New due date | Verify the new date is a business day

Checklist

What you need before filling it out

1

EIN

IRS EIN confirmation letter · IRS notice or prior return

⚠ Typo in digits✕ High
2

Tax year

Organizational calendar or prior return · Return header

⚠ Wrong fiscal year selected✕ Medium
3

Signature

Signed form copy · Authorized officer signature

⚠ Missing or unsigned✕ High
4

Mailing date

Certified mail receipt · Postal tracking

⚠ Sent after deadline✕ High
5

Electronic attachment

PDF upload confirmation · E‑file system log

⚠ Not attached to return✕ Medium

Before you submit

  1. 1Verify form edition date matches current tax year
  2. 2Confirm EIN and tax year are correct
  3. 3Check original return due date
  4. 4Calculate new due date (original + 6 months)
  5. 5Sign and date the form
  6. 6If mailing, use certified mail and keep receipt
  7. 7If e‑filing, attach PDF to the return before submission
  8. 8Retain a copy of the completed form for records
  9. 9Confirm IRS address matches the return type
  10. 10Ensure no other extension forms are attached

How to file this form

  1. 1Download the latest Form 6729‑C from IRS.gov.
  2. 2Enter organization name, EIN, and tax year.
  3. 3Enter the original filing deadline and select the six‑month extension option.
  4. 4Provide a brief reason (optional) and sign the form.
  5. 5If filing electronically, attach the PDF to the e‑filed return before submission.
  6. 6If mailing, send the form to the address in the instructions using a trackable method.
  7. 7Keep the mailing receipt or e‑file confirmation for your records.

Known limitations

  1. 1Form does not grant extensions beyond six months.
  2. 2No fee is collected, but penalties apply if the extension is not filed on time.
  3. 3Only applicable to exempt‑organization returns listed in the instructions.
  4. 4The IRS may reject the extension if the form is outdated.

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 6729‑C is currently active for the 2024 filing year. The IRS updates the form annually; verify the edition date before use.

What changed or needs a fresh check

  • Edition date – confirm the form is the current year’s version
  • Fee – no fee for the extension request itself
  • Mailing address – use the address in the instructions for the specific return type
  • Electronic submission – attach to the e‑filed return if applicable
  • Signature line – ensure an authorized officer signs

Form Preview

Form 6729C page 1

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Form 6729C page 2

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Quick Facts

Tax‑exempt organizations that file Form 990, 990‑EZ, 990‑PF, or 990‑T and need extra time.
The form captures the organization’s name, EIN, tax year, original due date, and the reason for the extension request.
File the form on or before the original due date of the return; the extension begins the day after that date.
Mail the completed form to the address listed in the instructions for the specific return type, or submit electronically if the return is e‑filed.
Incorrect or late extensions can trigger penalties and interest on any tax due, and the original return may be considered late filed.
1. Download the latest PDF from IRS.gov. 2. Fill in the organization’s identifying information and the original filing deadline. 3. Indicate the requested extension period (up to six months). 4. Sign and date the form. 5. Attach to the return if filing electronically, or mail to the correct address before the original deadline.

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After you file

  1. 1Save a scanned copy of the signed form.
  2. 2Record the new due date in your compliance calendar.
  3. 3Monitor for any IRS acknowledgment or notice of rejection.
  4. 4If mailed, track delivery and keep the receipt.
  5. 5Prepare the full return to be filed by the extended deadline.
  6. 6Update internal records with the extension approval date.
  7. 7If the extension is denied, assess penalties and consider payment options.

Sources

  • SRCForm title and purposeIRS Form 6729‑C instructions
  • SRCEligibilitylisted for tax‑exempt organizations filing Forms 990 series
  • SRCExtension periodsix months per IRS guidance
  • SRCSignature requirementsignature line in form instructions
  • SRCMailing addressaddress table in the form’s instructions
  • SRCElectronic attachmente‑file guidelines for Form 990 series
  • SRCEdition dateheader of the PDF
  • SRCPenalty riskIRS penalty schedule for late filing
  • SRCNot found in provided sourcefee amount (no fee stated)
  • SRCNot found in provided sourceexact deadline date for each tax year

Common confusion points

Extension length

Some think it can be longer than six months

→ Verify six‑month limit

Form number

Confused with Form 990‑EXT

→ Check purpose in instructions

Electronic vs. paper filing

Unclear if both are allowed

→ Follow specific return’s e‑file guidelines

Signature requirement

Belief a stamp suffices

→ Must be a handwritten signature of an authorized officer

Mailing address

Using generic IRS address

→ Use address listed for the specific return type

Workflow map

Related forms and next steps

4 signals

Before

Form 990, 990‑EZ, 990‑PF, or 990‑T

Current

6729C

After

Extended filing of the original return

Often used with

Form 6729‑C attached to the electronic return

⚠ If something goes wrong

  • Form 990‑F (late filing penalty) or Form 990‑EXT (special extension)

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Source transparency

Copyright & Licensing - US Government Forms

Independent guide

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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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