Form 843 Fillable PDF: IRS Claim for Refund and Request for Abatement Guide (2026)

Form 843 Fillable PDF – Form 843, officially titled Claim for Refund and Request for Abatement, is the key IRS form that lets individuals and businesses request refunds or reductions (abatements) of certain taxes, penalties, interest, fees, and additions to tax.

Whether you received unfair penalties, overpaid specific taxes like excess Social Security or Medicare withholding, or qualify for interest relief due to IRS delays, the latest Form 843 (Rev. December 2024) fillable PDF is your go-to document.

What Is IRS Form 843 Used For?

You can use Form 843 for these main purposes:

  • Penalty Abatement — For reasonable cause, First-Time Abatement (FTA), Trust Fund Recovery Penalty (section 6672), or other relief.
  • Interest Abatement — When the IRS caused delays or errors under IRC section 6404.
  • Refund of Specific Taxes and Fees — Excess Social Security/Medicare/RRTA taxes (if your employer won’t adjust), branded prescription drug fees, and certain other non-income taxes.
  • Other Relief — Penalties from erroneous IRS written advice or special situations like visual impairments.

Important Limitations: Do not use Form 843 for income tax refunds (file Form 1040-X instead), most excise tax refunds, or to amend employment tax returns. Always review the latest instructions for your specific case.

Download the Official Form 843 Fillable PDF

These official documents are free, fillable on most PDF readers, and directly from IRS.gov. Form 843 cannot be e-filed — you must print, sign, and mail it.

Pro Tip: Always download the newest version from IRS.gov to prevent processing delays.

Who Should File Form 843?

Common filers include:

  • Taxpayers seeking penalty relief due to reasonable cause or First-Time Abatement
  • Employees with excess federal payroll tax withholding
  • Businesses dealing with certain fees or penalties
  • Anyone eligible for interest reduction because of IRS errors

You can file on your own or through an authorized representative (attach Form 2848). For deceased taxpayers, include proper documentation such as Form 1310.

Step-by-Step: How to Fill Out Form 843?

The redesigned form is user-friendly. Follow these steps based on current IRS instructions:

  1. Reason for Filing — Check the appropriate box at the top (penalty abatement, interest abatement, refund of tax, or other).
  2. Personal Information — Enter your name, SSN or EIN, address, and spouse’s details (if joint return). Include a daytime phone number.
  3. Line 1 — Tax period(s) — Use MM/DD/YYYY format for beginning and ending dates. File a separate Form 843 for each period.
  4. Line 2 — Amount you are requesting to be refunded or abated.
  5. Line 3 — Dates of any payments you made.
  6. Lines 4–6 — Type of tax/fee, related return (e.g., Form 941, 1040), and applicable IRC section.
  7. Lines 7–8 — Provide a clear, detailed explanation of your request and attach supporting calculations and documents.

Signature Requirements: Both spouses must sign for joint matters. Attach all relevant IRS notices, payment records, and evidence of reasonable cause.

Where to Mail Form 843?

Mailing addresses depend on your location and whether you are responding to an IRS notice. Check the instructions or the address shown on your notice for the correct IRS service center.

Common Scenarios and Success Tips

  • First-Time Abatement (FTA): Available if you have a clean compliance record for the past three years. The IRS may apply it automatically in many cases, but you can request it with Form 843 if needed.
  • Reasonable Cause: Document events like serious illness, natural disasters, or unavoidable circumstances.
  • Deadlines: Generally within 3 years from the return filing date or 2 years from the date of payment. Protective claims may extend rights in ongoing litigation (e.g., certain COVID-era refund cases with a July 2026 deadline).
  • Processing Time: Expect several months. Track your status through your IRS online account.

Best Practices: Provide strong supporting documentation, be clear and concise in your explanation, and keep copies of everything you send.

Additional Resources

  • Official IRS Form 843 Page: irs.gov/forms-pubs/about-form-843
  • Publication 556: Examination of Returns, Appeal Rights, and Claims for Refund
  • Taxpayer Advocate Service (for hardship cases): 877-777-4778

Disclaimer: This guide is for informational purposes only and reflects IRS information as of May 2026. Tax rules can change. Consult a qualified tax professional or contact the IRS directly for advice tailored to your situation.