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Informational
Bulletin

FY 2024-24
May 2024

This bulletin is written to inform you of recent changes; it does not replace statutes, rules and regulations, or court decisions.

For information:

Visit our website at:
tax.illinois.gov

Email us at:
REV.IFTA@illinois.gov

Printable version available in:
English

Change in the Motor Fuel Use Tax Rate, Effective July 1, 2024, through December 31, 2024

To: All International Fuel Tax Agreement (IFTA) Licensees

Illinois Motor Fuel Use Tax is comprised of two parts, Part A and Part B. This tax is reported and paid by licensees under the International Fuel Tax Agreement (IFTA). The rates listed here are effective July 1, 2024, through December 31, 2024, for use on the quarterly IFTA returns.

What is the Illinois Part A rate?

The Part A rate is established by Section 2 of the Motor Fuel Tax Law, which imposes the tax per gallon on all motor fuel used in motor vehicles operating on Illinois public highways and in recreational type watercraft operating on Illinois waters.

What are the Illinois Part A motor fuel rates effective July 1, 2024?

Effective July 1, 2024, the Part A rates (in cents per gallon, DGE1, or GGE2) are as follows:

Diesel3 54.5¢ per gallon
Gasoline4 47.0¢ per gallon
LPG 54.5¢ per DGE5
LNG 54.5¢ per DGE6
CNG 47.0¢ per GGE7

What is the Illinois Part B rate?

The Illinois Department of Revenue is required to establish the Part B rate of the Motor Fuel Use Tax for diesel fuel, gasoline, gasohol, liquefied petroleum gas (LPG, commonly known as propane), compressed natural gas (CNG), and liquefied natural gas (LNG).

The Part B rate is established by the Department as of January 1 of each year using the average selling price per gallon of motor fuel sold in Illinois during the previous 12 months and multiplying it by 6.25 percent to determine the cents per gallon rate. 35 ILCS 505/13a.

What are the Illinois Part B motor fuel rates for 2024?

The Part B rates (in cents per gallon, DGE1, or GGE2) are as follows:

Diesel3 21.2¢ per gallon
Gasoline4 19.6¢ per gallon
LPG 18.0¢ per DGE5
LNG 17.1¢ per DGE6
CNG 12.6¢ per GGE7

What is the Motor Fuel Use Tax rate for July 1, 2024, through December 31, 2024?

From July 1, 2024, through December 31, 2024, the Motor Fuel Use Tax rates for the fuels listed below are as follows:

  Part A   Part B   Motor Fuel Use Tax Rate
Diesel 54.5¢ + 21.2¢ = 75.7¢ per gallon
Gasoline 47.0¢ + 19.6¢ = 66.6¢ per gallon
LPG 54.5¢ + 18.0¢ = 72.5¢ per DGE
LNG 54.5¢ + 17.1¢ = 71.6¢ per DGE
CNG 47.0¢ + 12.6 = 59.6¢ per GGE

Rate information is available at tax.illinois.gov. Use MyTax Illinois at mytax.illinois.gov to renew your IFTA license, order decals, and file and pay quarterly returns.

1 “DGE” means diesel gallon equivalent.

2 “GGE” means gasoline gallon equivalent.

3 Diesel fuel is defined as any product intended for use or offered for sale as a fuel for engines in which the fuel is injected into the combustion chamber and ignited by pressure without electric spark (includes biodiesel).

4 Gasoline includes gasohol.

5 A DGE of LPG = 6.41 pounds of LPG. The conversion ratio used to calculate the LPG rate is one gallon = 0.651 DGEs of LPG.

6 A DGE of LNG = 6.06 pounds of LNG. The conversion ratio used to calculate the LNG rate is one gallon = 0.5776 DGEs of LNG.

7 A GGE of CNG = 5.66 pounds of CNG.