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IRSOther IRS Forms (4000–6999)

Official form guide

Form 673: 673

IRS Form 673 is a statement used by certain active‑duty military members to claim a refund of an overpaid tax. File it when you have a qualifying overpayment and want a direct refund.

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Form Overview

IRS Form 673 - 673

IRS Form 673 is a statement used by certain active‑duty military members to claim a refund of an overpaid tax. File it when you have a qualifying overpayment and want a direct refund.

The form captures your personal identification, the amount of overpayment, the tax period, and the bank account for direct deposit.

Risk Radar

Scan points
  • 1A single typo in your bank info can send the refund to the wrong account.
  • 2Incorrect bank routing or account number
  • 3Wrong tax period entered
  • 4Missing signature or date
  • 5Using an outdated form edition

Plain English

If you’re on active duty and the military paid more tax than you owe, this short form lets you ask the IRS for the extra money back. It’s a simple claim, not a full tax return.

Submission Date

  • Filing date: 2019-08-28 22:10:25
  • 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

identificationperiodmoney

Hover a term to preview the meaning.

What this form is for

  • Use when you are an active‑duty service member with a documented overpayment.
  • Do not use if you are a civilian taxpayer or the overpayment is unrelated to military withholding.
  • Check Form 843 if you need a refund for other tax types or penalties.

Form selector

Use this form or another form?

Overpayment of estimated tax

Used for amended returns

✓ Verify you are not filing an amendment

Form 1040X

Refund of penalty or interest

Claims for penalties/interest

✓ Confirm the issue is not a simple overpayment

Form 843

Deadline or filing window

The IRS generally allows a refund claim within three years after the original filing deadline for the tax year in question. If the overpayment relates to a later‑adjusted return, the deadline may shift accordingly. No specific calendar deadline is printed on the form; calculate based on the three‑year rule.

  • —Overpayment amount | Input amount | Refund amount | Verify against pay stub

Checklist

What you need before filling it out

1

Tax period

Pay stub or W‑2 showing withholding · Service member’s pay record

⚠ Often omitted or mismatched✕ Medium
2

Bank routing/account

Void check or bank statement · Personal banking records

⚠ Numbers transposed✕ High
3

Signature

Handwritten signature · Physical form only

⚠ Missing or illegible signature✕ High
4

Overpayment amount

Notice of overpayment or calculation · Service finance office

⚠ Mis‑calculated amount✕ Medium

Before you submit

  1. 1Use the latest edition of Form 673
  2. 2Confirm personal name and SSN match service records
  3. 3Enter the correct tax year and period
  4. 4Accurately copy bank routing and account numbers
  5. 5Attach supporting pay statements or overpayment notice
  6. 6Sign and date the form
  7. 7Mail to the correct service‑branch address
  8. 8Retain a copy of the completed form and attachments
  9. 9Track mailing receipt or fax confirmation
  10. 10Check that no fees are required

How to file this form

  1. 1Download the current Form 673 PDF from IRS.gov
  2. 2Print and fill in all required fields by hand or typed PDF
  3. 3Gather supporting documents (pay stub, overpayment notice)
  4. 4Attach documents in the order listed in the instructions
  5. 5Sign and date the form
  6. 6Place the package in an envelope with correct postage
  7. 7Mail or fax to the address specified for your branch

Known limitations

  1. 1Form does not accept electronic filing via e‑file
  2. 2Only applicable to active‑duty military overpayments
  3. 3No built‑in validation for bank routing numbers
  4. 4IRS may request additional proof beyond what is attached

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 673 is currently active for the 2024 tax year. The IRS updates the form annually; verify the edition date before filing.

What changed or needs a fresh check

  • Edition date – verify the form is dated for the current tax year
  • Fee – no filing fee for Form 673
  • Mailing address – use the address specific to your service branch
  • Signature line – ensure you sign in the designated area
  • Bank account format – confirm routing and account numbers follow the required pattern

Form Preview

Form 673 page 1

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Form 673 page 2

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Quick Facts

Active‑duty service members who have an overpayment of tax that the military has already withheld.
The form captures your personal identification, the amount of overpayment, the tax period, and the bank account for direct deposit.
Submit after the tax year in which the overpayment occurred, typically within three years of the original filing deadline.
Mail the completed form to the address listed in the instructions for the taxpayer’s service branch, or fax if the branch permits electronic submission.
Errors can delay or deny the refund, and the IRS may require additional proof, extending the wait time.
1. Gather your pay statements and the notice showing the overpayment. 2. Fill in personal data, tax period, and overpayment amount. 3. Provide your bank routing and account numbers for direct deposit. 4. Sign and date the form. 5. Mail or fax to the address in the instructions.

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After you file

  1. 1Keep the mailed copy and tracking receipt for at least three years
  2. 2Monitor your bank account for the refund deposit
  3. 3If no refund after 6 weeks, call the IRS toll‑free line referencing Form 673
  4. 4Store any IRS correspondence related to the claim
  5. 5Update your tax records with the refunded amount

Sources

  • SRCForm 673 title and purposeIRS official form description
  • SRCEligibilityactive‑duty military overpayment clause
  • SRCNo filing feeindicated in instructions
  • SRCThree‑year claim periodstandard IRS refund limitation
  • SRCMailing addresslisted in the form’s instructions
  • SRCSignature requirementexplicit on the form
  • SRCBank account fieldspresent on the form
  • SRCNo e‑file optionnoted in filing instructions

Common confusion points

Confusion: Using Form 843 instead of 673

Why it happens: Both claim refunds

→ Safe check: Verify you are a service member with a military overpayment

Confusion: Filing after the three‑year window

Why it happens: Misreading the deadline

→ Safe check: Count three years from the original filing deadline

Confusion: Leaving the signature blank

Why it happens: Assuming electronic signature works

→ Safe check: Ensure a handwritten signature is present

Confusion: Sending to the IRS main address

Why it happens: Not reading branch‑specific instructions

→ Safe check: Use the address listed for your service branch

Confusion: Entering the wrong tax year

Why it happens: Overlap of calendar and fiscal years

→ Safe check: Match the year on your pay stub

Workflow map

Related forms and next steps

4 signals

Before

Review pay statements for overpayment

Current

673

After

Receive refund or IRS notice of additional info

Often used with

Form 1040 (to verify original filing)

⚠ If something goes wrong

  • File Form 843 for penalty/interest issues

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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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