Form 15504: Supporting Documents for Clean Vehicle Credits

Form 15504 is an IRS request for information about the clean vehicle credit. The form says, "We need to verify the information reported on Form 8936, Clean Vehicle Credit, attached to your Form 1040, U.S. Individual Income Tax Return." It adds that IRS records indicate one or more vehicle identification numbers (VINs) reported on Schedule A (Form 8936) may be invalid or ineligible for the credit.

For each vehicle, the form asks for the VIN, copies of the seller report and the purchase agreement, and Yes or No answers to nine questions about the vehicle. It also prints a note that the Clean Vehicle Credit for vehicles acquired after September 30, 2025, was terminated under new legislation, and that vehicles acquired before September 30, 2025, but placed in service after September 30, 2025, may still be eligible for the credit.

The form comes with a letter that explains how to respond. You can fill out Form 15504 free in your browser on this page and download the result without an account.

Top of page 1 of Form 15504: Supporting Documents for Clean Vehicle Credits, as printed by IRS

What's on Form 15504

Header

Taxpayer name, taxpayer identification number and tax year.

Explanation and note

Why the IRS is asking, how to send the response, and the note on vehicles acquired after September 30, 2025.

Documents list

For each vehicle: a copy of Form 15400, Clean Vehicle Seller Report (time of sale report), a copy of the signed purchase agreement or sales contract, the correct VIN if needed, and other supporting documents.

VIN lines

Four numbered lines for the VINs reported on Schedule A (Form 8936).

Yes or No grid

Nine questions with a box for each VIN, answered Y for Yes or N for No, or NA where the question allows it.

How to fill out Form 15504

1
Enter the header
Enter the taxpayer name, taxpayer identification number and tax year.
2
List each VIN
Enter each VIN reported on Schedule A (Form 8936) on lines 1 to 4. If a VIN sent earlier was incomplete or incorrect, the form asks for the correct VIN.
3
Answer the grid
For each VIN, enter Y or N for each question, such as whether the vehicle was leased, owned, placed in service during the tax year and used primarily in the United States. Enter NA where the form allows it.
4
Attach copies
Include a copy of Form 15400 and of the signed purchase agreement or sales contract for each vehicle, plus any other documents that substantiate the purchase.
5
Send the response
The form says to submit the response electronically using the instructions in the attached letter, or to mail it to the return address at the top of that letter if electronic submission is not possible.

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Where it goes and where to learn more

Electronic response

The form says to submit the response electronically using the instructions in the attached letter.

Mail

If the response cannot be submitted electronically, the form says to mail it to the return address listed at the top of the attached letter.

Credit termination note

The form says the Clean Vehicle Credit for vehicles acquired after September 30, 2025, was terminated under new legislation.

Learn more

The form points to IRS.gov/clean-vehicle-tax-credits and the Instructions for Form 8936, and lists www.irs.gov/forms-pubs and 800-TAX-FORM (800-829-3676) for forms.

Who receives and completes Form 15504?

Taxpayers who claimed the credit
The form refers to Form 8936, Clean Vehicle Credit, attached to Form 1040, and to each vehicle reported on Schedule A (Form 8936).
Up to four vehicles
The form has space for four VINs and a column of answers for each, VIN 1 to VIN 4.
Buyers of new clean vehicles
One question asks whether the original use of a new clean vehicle began with the taxpayer, with NA entered when it does not apply.
Buyers of previously-owned vehicles
Two questions ask whether the vehicle was purchased as a used vehicle and whether a previously-owned Clean Vehicle Credit was claimed during the prior three years.
Vehicles placed in service after September 30, 2025
One question asks whether such a vehicle was acquired on or before September 30, 2025, with NA entered when it does not apply.

The form is addressed to a taxpayer who attached Form 8936 to Form 1040 and whose Schedule A (Form 8936) lists a VIN the IRS is verifying. The taxpayer completes it and returns it with the documents it asks for.

Official sources and the blank

Official IRS form page
The agency’s own page for Form 15504.
Blank PDF
The official blank form, to print or fill by hand.

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Questions about Form 15504

Why does the IRS send Form 15504?

The form says IRS records indicate that one or more VINs reported on Schedule A (Form 8936) may be invalid or ineligible for the credit, and it asks for information to verify Form 8936.

What documents does Form 15504 ask for?

A copy of Form 15400, Clean Vehicle Seller Report, a copy of the signed purchase agreement or sales contract, the correct VIN if the earlier one was incomplete or incorrect, and other documents that substantiate the purchase.

How many vehicles fit on the form?

Four. It has four VIN lines and a column of answers for each vehicle.

How is the response sent?

Electronically, using the instructions in the attached letter. If that is not possible, the form says to mail it to the return address at the top of the letter.

What does the form say about vehicles acquired after September 30, 2025?

It says the credit for those vehicles was terminated under new legislation, and that vehicles acquired before September 30, 2025, but placed in service after that date may still be eligible.

Form 15504: Supporting Documents for Clean Vehicle Credits