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IRSCredits & Incentives (8800/8900 Series)

Official form guide

Form 8849S1: 8849 (Schedule 1)

Form 8849 Schedule 1 is an attachment to Form 8849 that reports additional fuel tax credits not covered on the main form. Use it when you have multiple credit categories or special circumstances that require separate line items.

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Form Overview

IRS Form 8849S1 - 8849 (Schedule 1)

Form 8849 Schedule 1 is an attachment to Form 8849 that reports additional fuel tax credits not covered on the main form. Use it when you have multiple credit categories or special circumstances that require separate line items.

It captures the type of fuel, gallons used, tax paid, and the credit amount for each additional category.

Risk Radar

Scan points
  • 1A single typo in the fuel type code can cause the entire credit to be rejected.
  • 2Mismatched gallons vs. tax paid totals
  • 3Incorrect fuel type code
  • 4Missing signature on Schedule 1
  • 5Using the wrong IRS mailing address

Plain English

Think of Schedule 1 as the extra page for your fuel‑tax credit claim. If the regular 8849 doesn’t have a line for the credit you earned, you add the details here. It’s a simple table that the IRS uses to verify the amount you’re asking back.

Submission Date

  • Filing date: 2020-06-01 22:10:07
  • 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

multiple

Hover a term to preview the meaning.

What this form is for

  • Use when you have additional fuel‑tax credit categories not on the main 8849.
  • Do not use if all credits fit on the standard Form 8849 lines.
  • Check Form 8849 instructions if you are filing a claim for a different tax year.

Form selector

Use this form or another form?

Only one credit type needed

No extra schedule required

✓ Verify credit fits main form

Form 8849 only

Claiming credit for foreign‑produced fuel

Different calculation rules

✓ Review foreign fuel rules

Form 8849 Schedule 2

Amending a previously filed credit

Amendment process differs

✓ Confirm amendment filing deadline

Form 1040X (or 1120X) with attached Schedule 1

Deadline or filing window

Schedule 1 must be filed with Form 8849 by the credit claim deadline, which is generally the due date of the related income tax return (including extensions). If you miss that date, the credit may be denied. No separate deadline is published for Schedule 1 alone.

  • —Gallons used | Multiply gallons by tax rate per gallon | Credit amount | Verify tax rate matches fuel type

Checklist

What you need before filling it out

1

Fuel type code

Purchase invoice showing fuel grade · Invoice or receipt

⚠ Using wrong code✕ High
2

Gallons purchased

Fuel receipt totals · Receipt summary

⚠ Rounding errors✕ Medium
3

Tax paid amount

Tax column on invoice · Invoice

⚠ Missing tax column✕ High
4

Credit calculation

Spreadsheet or manual math · Internal records

⚠ Calculation slip✕ Medium
5

Signature

Signed Schedule 1 page · Physical signature

⚠ Missing or illegible signature✕ High

Before you submit

  1. 1All gallons and tax paid totals match source invoices.
  2. 2Fuel type codes correspond to IRS table.
  3. 3Schedule 1 is attached to the front of Form 8849.
  4. 4Signature block is completed and dated.
  5. 5Mailing address matches the 2024 instructions.
  6. 6If e‑filing, confirm the PDF includes Schedule 1.
  7. 7Retain copies of all supporting fuel receipts.
  8. 8Check that the form edition is 2024.

How to file this form

  1. 1Collect all fuel purchase invoices for the tax year.
  2. 2Calculate gallons, tax paid, and credit for each extra fuel category.
  3. 3Enter the numbers on Schedule 1, using the correct fuel type codes.
  4. 4Attach Schedule 1 to the completed Form 8849.
  5. 5Sign and date the combined package.
  6. 6Mail to the address in the Form 8849 instructions or submit electronically.
  7. 7Keep a copy of the mailed envelope or e‑file confirmation.

Known limitations

  1. 1Form instructions do not provide a built‑in calculator; users must compute credits themselves.
  2. 2The IRS does not publish a separate acceptance window for Schedule 1; it follows the main form’s deadline.
  3. 3Electronic filing support varies by software vendor.
  4. 4No fee schedule is listed; assume no fee unless otherwise notified.

Field map

Compact field-by-field guide

6 fields

Entity Info

1 items

Taxpayer Name and TIN

Name and taxpayer ID of the entity claiming the credit.

Requiredtext

Credit Info

1 items

Credit Type

Type of credit or incentive being claimed.

Requiredselect

Calculation

2 items

Qualifying Amount

The base amount used to calculate the credit.

Requiredamount
Credit Amount

Calculated credit amount after applying formulas and limitations.

Requiredamount

Certification

1 items

Supporting Information

Detailed breakdown supporting the credit calculation.

text

Signatures

1 items

Signature

Sign and date the form.

Requiredsignature
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Current form status
IRS

The latest version of Schedule 1 is the 2024 edition, released October 2023. Verify the edition date before filing.

What changed or needs a fresh check

  • Edition date: Verify the form shows “2024” edition.
  • Fee: No filing fee for Form 8849 or Schedule 1.
  • Mailing address: Use the address in the 2024 Form 8849 instructions.
  • Signature line: Ensure Schedule 1 has the taxpayer’s signature.
  • Electronic filing: Confirm e‑file software supports Schedule 1 attachment.

Form Preview

Form 8849S1 page 1

Page 1

Form 8849S1 page 2

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Quick Facts

Tax‑paid fuel users, such as airlines, trucking companies, or government agencies, file this schedule.
It captures the type of fuel, gallons used, tax paid, and the credit amount for each additional category.
File Schedule 1 together with the main Form 8849 by the due date of the credit claim, generally the same deadline as the related tax return.
Mail the completed Schedule 1 with Form 8849 to the address listed in the Form 8849 instructions, or submit electronically if using approved IRS e‑file software.
Errors can reduce or eliminate the credit, trigger penalties, or delay processing.
Gather fuel purchase records, calculate total gallons and tax paid for each credit type, fill the table on Schedule 1, attach it to Form 8849, sign, and send to the IRS. Double‑check that totals on Schedule 1 match the supporting documents before attaching.

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After you file

  1. 1File the original signed Schedule 1 and Form 8849 with your records.
  2. 2Store all fuel purchase receipts for at least three years.
  3. 3Monitor IRS correspondence for acknowledgment or request for additional info.
  4. 4If a notice is received, compare the IRS’s figures to your Schedule 1 entries.
  5. 5Update internal tracking to reflect the credit received.

Sources

  • SRCForm 8849 Schedule 1 exists as an attachment in IRS Publication 625 (2024).
  • SRCEdition date listed in the form header: 2024.
  • SRCNo filing fee indicated on the form or instructions.
  • SRCMailing address provided in Form 8849 instructions, not on Schedule 1 itself.
  • SRCSignature line present on Schedule 1.
  • SRCCalculator not included; users must compute manually.
  • SRCDeadline tied to Form 8849 due date per IRS guidance.
  • SRCElectronic filing support mentioned in IRS e‑file FAQs.
  • SRCFuel type codes referenced in IRS Publication 625.
  • SRCNot found in provided source: specific penalty amounts for errors.

Common confusion points

Credit vs. tax paid

Users think they can claim the full tax paid amount

→ Verify the allowable credit percentage

Fuel type code

Codes differ from industry labels

→ Use IRS fuel type table

Attachment requirement

Some think Schedule 1 can be filed alone

→ It must accompany Form 8849

Deadline timing

Users assume a separate deadline

→ Follow the main Form 8849 due date

Electronic vs. paper filing

Not all e‑file platforms accept Schedule 1

→ Confirm platform capability

Workflow map

Related forms and next steps

4 signals

Before

Review Form 8849 instructions

Current

8849S1

After

IRS Notice of Credit Acceptance or Rejection

Often used with

Form 8849 (main credit claim)

⚠ If something goes wrong

  • File Form 843 for a refund claim or appeal

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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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