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.
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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.
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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.