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IRSOther IRS Forms (7000–9999)

Official form guide

Form 8718: 8718

Form 8718 is the IRS application to request an extension of time to pay estimated tax. Use it when you need more than the standard 30‑day payment window for a quarterly estimated tax payment.

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Form Overview

IRS Form 8718 - 8718

Form 8718 is the IRS application to request an extension of time to pay estimated tax. Use it when you need more than the standard 30‑day payment window for a quarterly estimated tax payment.

The form captures the taxpayer’s identification, the tax period, the amount due, and the requested extension length (up to 30 days).

Risk Radar

Scan points
  • 1A missed or late extension can trigger penalties that quickly add up.
  • 2Submitting after the original due date
  • 3Leaving the signature line blank
  • 4Incorrect taxpayer identification number
  • 5Requesting more than a 30‑day extension

Plain English

If you can’t pay your quarterly tax estimate on time, you can ask the IRS for extra days using this short form. It doesn’t change the amount you owe, only the deadline to send the money.

Submission Date

  • Filing date: 2021-11-16 22:13:47
  • 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

identificationpaymentperiodlengthmoney

Hover a term to preview the meaning.

What this form is for

  • Use when you need extra days to pay a quarterly estimated tax.
  • Do not use if you are requesting an extension of filing time (that's Form 4868).
  • Check Form 9465 if you need a payment plan instead of a short extension.

Form selector

Use this form or another form?

Late payment without extension

Sets up installment agreement

✓ Verify eligibility before filing

Form 9465

Request to extend filing deadline

Extends filing date, not payment

✓ Separate from payment extension

Form 4868

Deadline or filing window

The extension request must be received by the IRS on or before the original estimated‑tax due date. If the form arrives after that date, the extension is denied and penalties may apply. No separate deadline beyond the original due date is provided.

  • —Estimated tax due | None (user input) | Amount owed | Verify with prior quarter’s calculation

Checklist

What you need before filling it out

1

Taxpayer identification number

Social Security Number or EIN · Tax return, prior filings

⚠ Typo or missing digits✕ High
2

Quarter being extended

Calendar quarter (1‑4) · Payment schedule

⚠ Selecting wrong quarter✕ Medium
3

Requested extension days

Number of days (max 30) · Form field

⚠ Exceeding 30 days✕ High
4

Signature

Handwritten or electronic signature · Signature line

⚠ Blank or unauthorized signature✕ High

Before you submit

  1. 1Use the current year’s edition of Form 8718
  2. 2Enter correct SSN/EIN
  3. 3Select the correct quarter
  4. 4Enter the exact amount of tax due
  5. 5Request no more than 30 days
  6. 6Sign and date the form
  7. 7Attach payment or a clear payment schedule
  8. 8Mail to the correct IRS address
  9. 9Retain a copy of the completed form
  10. 10Confirm mailing date is before the original due date
  11. 11Check for any IRS notices confirming the extension

How to file this form

  1. 1Download the latest Form 8718 PDF from IRS.gov
  2. 2Fill in identification and payment sections by hand or PDF editor
  3. 3Calculate the exact tax due for the quarter
  4. 4Write the requested extension (up to 30 days)
  5. 5Sign the form
  6. 6Prepare the payment or payment schedule
  7. 7Mail the package to the address in the instructions
  8. 8Track the mailing receipt

Known limitations

  1. 1Form does not waive interest; interest accrues from original due date
  2. 2Only a 30‑day extension is permitted
  3. 3Electronic filing is limited to certain entity types
  4. 4IRS may reject if the form is illegible or missing required fields

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 8718 is active for the current tax year. The IRS updates the form annually; verify you have the latest edition before filing.

What changed or needs a fresh check

  • Edition date – confirm the form matches the current tax year
  • Fee – no fee for Form 8718, but payment may be required
  • Mailing address – use the address in the instructions for your state
  • Electronic filing availability – check IRS e‑file portal
  • Signature requirement – must be signed by the taxpayer or authorized fiduciary

Form Preview

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Quick Facts

Individuals, estates, trusts, and fiduciaries who make quarterly estimated tax payments file this form.
The form captures the taxpayer’s identification, the tax period, the amount due, and the requested extension length (up to 30 days).
File it before the original due date of the estimated tax payment you are extending, typically the 15th day of the month preceding the quarter.
Mail the completed form to the IRS address listed in the instructions for the specific tax year, or submit electronically if the IRS e‑file system supports it for your entity type.
Errors can cause the extension to be denied, leading to penalties and interest on the late payment.
1. Gather your tax ID, payment amount, and the quarter you’re extending. 2. Complete the identification and payment sections on Form 8718. 3. Sign and date the form. 4. Mail it with any required payment or a statement of when you will pay. 5. Keep a copy for your records.

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After you file

  1. 1Keep the mailed copy and receipt in your tax file
  2. 2Watch for an IRS acknowledgment or notice
  3. 3Pay the estimated tax by the new deadline
  4. 4Record the payment date in your accounting system
  5. 5If denied, pay immediately to limit penalties
  6. 6Update your quarterly payment calendar

Sources

  • SRCForm 8718 title and purposeIRS official form description
  • SRCExtension length (max 30 days)Form instructions
  • SRCNo filing feeIRS fee schedule
  • SRCSignature requirementForm line items
  • SRCMailing addressInstructions page
  • SRCElectronic filing availabilityIRS e‑file guidance
  • SRCPenalty risk for late extensionIRS penalty rules
  • SRCNot found in provided sourceSpecific electronic submission portal URL

Common confusion points

Extension vs. filing deadline

People mix Form 8718 with Form 4868

→ Verify you need extra payment time, not filing time

Maximum days

Some think any number of days is allowed

→ Remember the cap is 30 days

Electronic filing

Not all taxpayers can e‑file this form

→ Check IRS e‑file eligibility list

Payment attachment

Unclear if payment is required with the request

→ Include either the payment or a clear schedule

Address differences

IRS has multiple addresses by state

→ Use the address in the current year’s instructions

Workflow map

Related forms and next steps

4 signals

Before

Form 1040‑ES (estimated tax worksheet)

Current

8718

After

IRS notice confirming extension or denial

Often used with

Form 9465 (installment agreement) if you cannot pay even with extension

⚠ If something goes wrong

  • File a protest or request a waiver of penalties using Form 843

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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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