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IRSOther IRS Forms (1000–1999)

Official form guide

Form 13424L: 13424-L

IRS Form 13424‑L is a paper‑based request for an extension of time to file a specific tax return. It is used when the taxpayer needs additional days beyond the standard deadline to submit the underlying return.

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Form Overview

IRS Form 13424L - 13424-L

IRS Form 13424‑L is a paper‑based request for an extension of time to file a specific tax return. It is used when the taxpayer needs additional days beyond the standard deadline to submit the underlying return.

It captures the taxpayer’s identification, the return type, the requested extension period, and any required payment.

Risk Radar

Scan points
  • 1A single missing signature can invalidate the entire extension request.
  • 2Incorrect taxpayer identification number
  • 3Missing or wrong extension fee amount
  • 4Signature missing or illegible
  • 5Mailing to the wrong IRS processing center

Plain English

Think of this form as a permission slip to get extra time on a tax filing deadline. You fill it out, pay any required fee, and send it to the IRS before the original due date. If the IRS approves, you get the extra days granted on the form.

Submission Date

  • Filing date: 2020-05-13 22:11:00
  • 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

identificationpaymentperiodpaper

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What this form is for

  • Use when you need more time to file the specific return tied to this form.
  • Do not use for general individual extensions (Form 4868).
  • Check if the underlying return has a separate electronic extension option.

Form selector

Use this form or another form?

Individual return extension

Simpler, no fee for most taxpayers

✓ Verify filing method

Form 4868

Corporation extension beyond 6 months

Allows automatic 6‑month extension

✓ Confirm eligibility

Form 7004

Tax‑exempt organization extension

Specific to exempt organizations

✓ Ensure correct form

Form 8868

Deadline or filing window

The extension request must reach the IRS on or before the original filing deadline of the return it covers. If the request arrives after that date, the extension is not granted and penalties may apply. The IRS does not publish a separate deadline for Form 13424‑L; it inherits the underlying return’s deadline.

  • —Extension fee | fee amount from instructions | Total payment due | Verify fee matches taxpayer’s liability

Checklist

What you need before filling it out

1

Taxpayer ID

Social Security or EIN · Tax documents, prior returns

⚠ Miss‑typed number✕ High
2

Requested extension period

Number of days · Instructions table

⚠ Exceeds allowed maximum✕ Medium
3

Payment amount

Calculated fee · Payment voucher

⚠ Underpayment✕ High
4

Signature

Authorized signature · Power of attorney if applicable

⚠ Blank or unreadable✕ High

Before you submit

  1. 1Use the latest edition of Form 13424‑L.
  2. 2All required fields are filled in legibly.
  3. 3Taxpayer ID matches IRS records.
  4. 4Requested extension period is within allowed limits.
  5. 5Correct fee calculated and attached.
  6. 6Payment method complies with IRS instructions.
  7. 7Signature and date are present.
  8. 8Form is mailed to the correct IRS address.
  9. 9Mailing date is on or before the original deadline.
  10. 10Retain a copy and mailing receipt.

How to file this form

  1. 1Download and print the current Form 13424‑L.
  2. 2Enter taxpayer information and return type.
  3. 3Calculate the extension fee per instructions.
  4. 4Attach payment (check or money order) with correct payable line.
  5. 5Sign and date the form.
  6. 6Place the form in an envelope with the correct IRS address.
  7. 7Send via certified mail or another traceable service before the deadline.

Known limitations

  1. 1Form does not accept electronic signatures.
  2. 2Only paper filing is accepted for most taxpayers.
  3. 3Fee schedule may change annually; verify each year.
  4. 4IRS processing times vary; extension is not guaranteed until receipt is confirmed.

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 13424‑L is currently active and accepted for the 2024 tax year. Verify the edition date on the IRS website before use.

What changed or needs a fresh check

  • Edition date – confirm the form is the latest version (usually listed on the first page).
  • Fee – verify the correct amount and acceptable payment methods.
  • Mailing address – use the address matching the return type and taxpayer location.
  • Signature line – ensure the authorized person signs and dates.
  • Page count – attach all required pages; missing pages cause rejection.

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Quick Facts

The taxpayer or authorized representative who owes the underlying return files this form.
It captures the taxpayer’s identification, the return type, the requested extension period, and any required payment.
It must be filed before the original filing deadline of the return it seeks to extend, typically the 15th day of the month following the tax year end.
Submit the completed form to the IRS address listed in the instructions for the specific return type, either by US mail or approved electronic delivery if permitted.
Errors can cause the extension request to be rejected, leaving the taxpayer subject to late‑filing penalties and interest.
1. Download the current edition of Form 13424‑L from IRS.gov. 2. Fill in all required fields legibly. 3. Calculate any extension fee and attach payment. 4. Mail the form to the address in the instructions before the original deadline. 5. Keep the receipt and a copy for your records.

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After you file

  1. 1Keep the mailed copy and receipt for at least three years.
  2. 2Monitor mail for an IRS acknowledgment or notice.
  3. 3If no confirmation is received within 30 days, call the IRS toll‑free number.
  4. 4Update your calendar with the new filing deadline printed on the approved form.
  5. 5Retain any correspondence related to the extension request.

Sources

  • SRCForm title and purposeIRS official form description.
  • SRCEdition date locationfirst page header on IRS PDF.
  • SRCFee requirementinstructions section on Form 13424‑L.
  • SRCMailing addressinstructions for the specific return type.
  • SRCSignature requirementsignature line on the form.
  • SRCExtension period limitstable in the instructions.
  • SRCElectronic filing availabilitynot stated in provided source.
  • SRCProcessing timenot clearly stated in the provided official source.

Common confusion points

Form number vs. underlying return

Similar numbers cause mix‑ups

→ Double‑check the return type

Extension fee amount

Varies by return type

→ Use the fee table in the instructions

Electronic vs. paper filing

Some returns allow e‑extension

→ Verify if electronic filing is permitted

Maximum extension days

Different limits for corporations vs. individuals

→ Refer to the form’s limits table

Signature authority

Power of attorney may be needed

→ Confirm signer’s authority

Workflow map

Related forms and next steps

4 signals

Before

Gather the underlying tax return (e.g., Form 1120‑L).

Current

13424L

After

File the original return by the new deadline granted on the approved form.

Often used with

Payment voucher attached to Form 13424‑L.

⚠ If something goes wrong

  • File a written explanation with Form 1040‑X (amended return) if the extension is denied.

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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.
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