Form 720-X

(Rev. January 2020)

Department of the Treasury 

Internal Revenue Service 

Amended Quarterly Federal Excise Tax Return 

▶ Go to www.irs.gov/Form720X for the latest information.

▶ Use to correct a previously filed Form 720. 

OMB No. 1545-1759

Type 

or 

Print 

Name (as shown on Form 720)

Number, street, and room or suite no. (If you have a P.O. box, see the instructions.)

City or town, state or province, country, and ZIP or foreign postal code

Employer identification number (EIN)

Telephone number (optional)

1 Adjustments to Liability Reported on Previously Filed Forms 720 

(a)

Quarter 

ending 

(b)

IRS No. 

(c)

Tax 

(d) 

Tax as originally reported 

on Form 720 or as 

previously adjusted 

(e) 

Adjusted tax 

(f)

Change 

(subtract col. (d)

 from col. (e)) 

2 Adjustments to Form 720, Schedule C (see instructions for allowable adjustments) 

(a)

Quarter 

ending 

(b)

CRN 

(c)

Credit 

(d) 

Credit as originally 

reported on Form 720 or 

as previously adjusted 

(e) 

Adjusted credit 

(f)

Change 

(subtract col. (e)

 from col. (d)) 

3 Statement in Support of Adjustment. For tax decreases only, indicate below the statement that applies to the adjustment. 

a For IRS Nos. 22, 26, 28, or 27, only collectors using the regular method for deposits check the box below. 

The claimant has repaid the amount of the tax to the person from whom it was collected or 

has obtained the consent of that person to the allowance of the adjustment. 

b For all other IRS Nos. except for 18, 21, 98, 19, 29, 31, 30, 133, 64, 125, 51, 117, and 20, or if

the tax was based on use for 71, 79, 112, 118, 120–124, 61, and 101, check the box below. 

The claimant hasn’t included the tax in the price of the article and hasn’t collected the tax 

from the purchaser, has repaid the tax to the ultimate purchaser, or has attached the written

consent of the ultimate purchaser to the allowance of the adjustment. 

4 Total adjustments. Combine all amounts in column (f) for lines 1 and 2 and enter the amount 

here . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 

If the result is a balance due, pay the amount with this return. Enclose a check or money order with Form 720-X and make it 

payable to “United States Treasury.” Write on the check or money order: “Form 720-X,” your name, address, EIN, and the date 

Form 720-X was signed. Complete line 6. 

If the result is an overpayment, complete lines 5 and 6. 

5 Check if you want the overpayment: 

a Refunded to you. 

b Applied to your next Form 720. Enter quarter ending date. ▶

See Form 720 for how to apply your overpayment. 

For Paperwork Reduction Act Notice, see the Instructions for Form 720. Cat. No. 32661B Form 720-X (Rev. 1-2020) 
Form 720-X (Rev. 1-2020) Page 2 

6 Explanation of adjustments. See the instructions for line 6 for requirements. Attach additional sheets with your name and EIN 

if more space is needed. 

Sign 

Here

Under penalties of perjury, I declare that I have examined this return, including accompanying schedules and statements, and to the best of my knowledge and belief, it is 

true, correct, and complete. Declaration of preparer (other than taxpayer) is based on all information of which preparer has any knowledge.

▲

Signature 

Type or print name below signature. 

Date Title

Paid 

Preparer 

Use Only

Print/Type preparer’s name Preparer’s signature Date Check if 

self-employed

PTIN

Firm’s name ▶

Firm’s address ▶

Firm’s EIN ▶

Phone no.

Form 720-X (Rev. 1-2020) 
Form 720-X (Rev. 1-2020) Page 3 

Section references are to the Internal Revenue Code unless otherwise noted. 

Future Developments

For the latest information about developments related to Form 720-X and its 

instructions, such as legislation enacted after they were published, go to 

www.irs.gov/Form720X.

General Instructions 

What’s New

Section 6426 credit extensions and clarification:

• Biodiesel. The biodiesel and renewable diesel mixture credit is 

retroactively extended for fuel sold or used in 2018 through 2022.

• Alternative fuel. The alternative fuel credit is retroactively extended for fuel 

sold or used in 2018 through 2020.

• Alternative fuel mixtures. The alternative fuel mixture credit is extended 

retroactively for fuel sold or used in 2018 through 2020. For claims made on 

or after January 8, 2018, “alternative fuel mixture” means a mixture of taxable 

fuel and alternative fuel other than liquefied petroleum gas (LPG), 

compressed natural gas (CNG), liquefied natural gas (LNG), liquefied gas 

derived from biomass, and compressed gas derived from biomass.

Purpose of Form 

Use Form 720-X to make adjustments to liability reported on Forms 720 you 

have filed for previous quarters. Don’t use Form 720-X to make changes to 

claims made on Form 720, Schedule C, except for the section 4051(d) tire 

credit and section 6426 credits. 

▲!

CAUTION

You must include in gross income (income tax return) any 

overpayment from line 4 of Form 720-X if you took a deduction 

on the income tax return that included the amount of the taxes 

and that deduction reduced the income tax liability. See Pub. 

510, Excise Taxes, for more information. 

When To File 

Generally, adjustments that decrease your tax liability for a prior quarter 

must be made within 3 years from the time the return was filed or 2 years 

from the time the tax was paid, whichever is later. 

Where To File 

If you’re filing Form 720-X separately, send Form 720-X to: 

Department of the Treasury 

Internal Revenue Service 

Cincinnati, OH 45999-0009

Otherwise, attach Form 720-X to your next Form 720. 

Private delivery services. You can use certain private delivery services 

(PDS) designated by the IRS to meet the “timely mailing as timely filing” 

rule for tax returns. Go to www.irs.gov/PDS for the current list of 

designated services. The PDS can tell you how to get written proof of 

the mailing date. For the IRS mailing address to use if you’re using PDS, 

go to www.irs.gov/PDSstreetAddresses. 

▲! CAUTION

Private delivery services can’t deliver items to P.O. boxes. You 

must use the U.S. Postal Service to mail any item to an IRS P.O. 

box address. 

Specific Instructions 

P.O. Box. If the post office doesn’t deliver mail to the street address and you 

have a P.O. Box, show the box number instead of the street address.

Foreign address. Don’t abbreviate the country name. Follow the country’s 

practice for entering the postal code and the name of the province, country, 

or state.

Line 1 

Report each adjustment separately on line 1. You can use line 6 for your 

explanation or you can attach additional sheets with your name and EIN as 

needed. 

Column (a). Enter the quarter ending date of the Form 720 you’re amending. If 

you’re amending more than one quarter, make sure each quarter is clearly 

identified. Enter the date in the MMDDYYYY format. For example, if you’re 

adjusting the first quarter return for 2020, enter “03312020.”

Column (d). Enter the tax amount for the IRS No. entered in column (b) as 

originally reported on Form 720 or as later adjusted by you or the IRS.

Column (e). Enter the adjusted tax liability that should have been reported 

for the IRS No. in column (b).

Column (f). If column (e) is greater than column (d), subtract column (d) from 

column (e). This is an increase. If column (d) is greater than column (e), subtract 

column (e) from column (d). This is a decrease. Show the decrease in parentheses.

Line 2 

Section 4051(d) tire credit. You must use line 2 to report any adjustment to 

the section 4051(d) tire credit for a prior quarter. For example, if you report 

an additional taxable vehicle on line 1 for IRS No. 33, the applicable tire 

credit is reported on line 2. Enter CRN 366 in column 2(b). See the 

Instructions for Form 720 for more information.

Section 6426 credits. You must use line 2 to report any adjustment to 

section 6426 credits, if (a) you’re reporting a change to certain taxable fuel 

liability (section 4081 liability in the case of mixtures or section 4041 liability 

in the case of alternative fuel) on line 1, or (b) you were unable to claim the 

credits against the section 4041 or 4081 liability on a prior Form 720 because 

you weren’t registered. Section 6426 credits include the biodiesel or 

renewable diesel mixture credit, alternative fuel credit, and alternative fuel 

mixture credit. Use a separate line for each adjustment. Enter the CRN from 

the table below in column 2(b). You must also complete line 6. 

Credit CRN Credit Rate 

Biodiesel or renewable diesel mixture credit 

Biodiesel (other than agri-biodiesel) mixtures 388 1.00 

Agri-biodiesel mixtures 390 1.00 

Renewable diesel mixtures 307 1.00 

Alternative fuel credit and alternative fuel mixture credit 

Liquefied petroleum gas (LPG)* 426 .50 

“P Series” fuels 427 .50 

Compressed natural gas (CNG)* 428 .50 

Liquefied hydrogen 429 .50 

Any liquid fuel derived from coal (including 

peat) through the Fischer-Tropsch process

430 .50 

Liquid fuel derived from biomass 431 .50 

Liquefied natural gas (LNG)* 432 .50 

Liquefied gas derived from biomass* 436 .50 

Compressed gas derived from biomass* 437 .50 

*See What’s New, under Alternative fuel mixtures for this fuel.

Line 3a 

Collectors using the alternative method for deposits must adjust their 

separate accounts for any credits or refunds made to customers of the 

collector. Form 720-X can’t be used for this purpose. For more information, 

see Alternative method in the Instructions for Form 720. 

Line 5 

If you want your overpayment refunded to you, check the box for line 5a. 

If you want your overpayment applied to your next Form 720, check the 

box for line 5b and enter the quarter ending date of your next Form 720. You 

can file Form 720-X separately or you can attach it to your next Form 720. 

Caution. If you checked the box on line 5b, be sure to include the 

overpayment amount on lines 6 and 7 on your next Form 720. See Form 720 

for details. If you owe other federal tax, interest, or penalty, the overpayment 

will first be applied to the unpaid amounts. 

Line 6 

You can use line 6 for your explanation or you can attach additional sheets 

with your name and EIN as needed. 

Adjustments on line 1. For each adjustment, you must include a detailed 

description of the adjustment and the computation of the amount. 

Adjustments on line 2. Any section 6426 credits must first be applied 

against your section 4041 or 4081 liability. To make an adjustment, you must 

follow the instructions for lines 12, 13, and 14 in the Instructions for Form 

720 (Rev. January 2020). For each adjustment you must attach a detailed 

explanation of the adjustment, including your registration number, and the 

computation of the amount. Your computation must include the number of 

gallons (or gasoline gallon equivalents) and credit rate (as shown above). You 

must include any information that is requested in the Instructions for Form 

720 (Rev. January 2020), for Form 720, lines 12, 13, and 14.
Form 720X (Rev. 1-2020) Page 4 

For example, the Certificate for Biodiesel and, if applicable, Statement of 

Biodiesel Reseller must be attached to Form 720-X if it’s the first claim filed 

that is supported by the certificate or statement. See the Instructions for 

Form 720 (Rev. January 2020) for more information.

Certifications. On line 6 or a separate sheet of paper, you must include the 

applicable statement shown below. 

Biodiesel mixture credit. Claimant produced a mixture by mixing biodiesel 

with diesel fuel. The biodiesel used to produce the mixture met ASTM D6751 

and met EPA’s registration requirements for fuels and fuel additives. The 

mixture was sold by the claimant to any person for use as a fuel or was used 

as a fuel by the claimant. Claimant has attached the Certificate for Biodiesel 

and, if applicable, the Statement of Biodiesel Reseller. 

Renewable diesel mixture credit. Claimant produced a mixture by mixing 

renewable diesel with liquid fuel (other than renewable diesel). The 

renewable diesel used to produce the renewable diesel mixture was derived 

from biomass, met EPA’s registration requirements for fuels and fuel 

additives, and met ASTM D975, D396, or other equivalent standard 

approved by the IRS. The mixture was sold by the claimant to any person for 

use as a fuel or was used as a fuel by the claimant. Claimant has attached 

the Certificate for Biodiesel and, if applicable, Statement of Biodiesel 

Reseller, both of which have been edited as discussed in the Instructions for 

Form 720 (Rev. January 2020). 

Alternative fuel mixture credit. Claimant produced a mixture by mixing 

taxable fuel with alternative fuel. Claimant certifies that it (a) produced the 

alternative fuel, or (b) has in its possession the name, address, and EIN of 

the person(s) that sold the alternative fuel to the claimant; the date of 

purchase; and an invoice or other documentation identifying the amount of 

the alternative fuel. The claimant also certifies that it made no other claim for 

the amount of the alternative fuel, or has repaid the amount to the 

government. The alternative fuel mixture was sold by the claimant to any 

person for use as a fuel or was used as a fuel by the claimant. 

Signature 

Form 720-X must be signed by a person authorized by the entity to sign this 

return. You must sign Form 720-X even if it’s filed with Form 720 to apply an 

overpayment. 

Paid Preparer Use Only

A paid preparer must sign Form 720-X and provide the information in the 

Paid Preparer Use Only section at the end of the form if the preparer was 

paid to prepare the form and isn’t an employee of the filing entity. Paid 

preparers must sign paper forms with a manual signature. The preparer must 

give you a copy of the form in addition to the copy to be filed with the IRS.

If you’re a paid preparer, enter your Preparer Tax Identification Number 

(PTIN) in the space provided. Include your complete address. If you work for 

a firm, you also must enter the firm’s name and the EIN of the firm. However, 

you can’t use the PTIN of the tax preparation firm in place of your PTIN.

You can apply for a PTIN online or by filing Form W-12, IRS Paid Preparer 

Tax Identification Number (PTIN) Application and Renewal. For more 

information about applying for a PTIN online, visit the IRS website at 

www.irs.gov/PTIN.