IFTA CNG tax rates by state, Q4 2025 (October to December)
Every IFTA member jurisdiction's CNG rate for the quarter, as published by IFTA, Inc. Printable, and you can filter by name.
What is the CNG tax rate in each state?
For Q4 2025 (October to December), 45 of the 58 IFTA jurisdictions list a rate for CNG in IFTA, Inc.'s tax rate table. The quantity each rate applies to differs by jurisdiction, so the Unit column below shows each one.
IFTA, Inc. lists each rate as a US$ and a C$ figure. For this fuel, what a rate is per (a gallon, a litre, a gallon equivalent, a weight or a volume of gas) is set by each jurisdiction's own rules. The Unit column shows each one with a link to its source, read 2026-10-22. "Not confirmed" means we found no official source we could rely on. Check the unit with your base jurisdiction before you file.
| Jurisdiction | Rate (US$) | Unit | Surcharge (US$) | Effective |
|---|---|---|---|---|
| Alabama | $0.1300 | Per gasoline gallon equivalent (source) | — | 2025-10-01 |
| Arkansas | $0.0500 | Not confirmed | — | 2025-10-01 |
| California | $0.0887 | Per gasoline gallon equivalent (126.67 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| Colorado | $0.1830 | Per gasoline gallon equivalent (126.67 cu ft) (source) | — | 2025-10-01 |
| Connecticut | $0.2600 | Per gasoline gallon equivalent (123.57 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| Delaware | $0.2200 | Not confirmed | — | 2025-10-01 |
| Georgia | $0.3310 | Per gallon equivalent (124,000 BTU; therms × 0.8) (source) | — | 2025-10-01 |
| Iowa | $0.3100 | Per gasoline gallon equivalent (126.67 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| Idaho | $0.3200 | Per gasoline gallon equivalent (126.67 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| Illinois | $0.6090 | Per gasoline gallon equivalent (5.66 lb) (source) | — | 2025-10-01 |
| Indiana | $0.6100 | Per gasoline gallon equivalent (therms ÷ 1.25) (source) | — | 2025-10-01 |
| Kansas | $0.2400 | Per gasoline gallon equivalent (126.67 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| Kentucky | $0.2200 | Per gallon (126.67 cu ft or 5.66 lb) (source) | $0.1050 | 2025-10-01 |
| Louisiana | $0.2000 | Per gasoline gallon equivalent (5.66 lb) (source) | — | 2025-10-01 |
| Massachusetts | $0.2360 | Not confirmed | — | 2025-10-01 |
| Manitoba | $0.2469 | Per cubic metre (source) | — | 2025-10-01 |
| Maryland | $0.4600 | Per gasoline gallon equivalent (126.67 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| Maine | $0.3078 | Per gasoline gallon equivalent (123.66 cu ft) (source) | — | 2025-10-01 |
| Michigan | $0.4550 | Per gallon equivalent (126.67 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| Minnesota | $0.3180 | Not confirmed | — | 2025-10-01 |
| Missouri | $0.1700 | Per gasoline gallon equivalent (5.66 lb) (source) | — | 2025-10-01 |
| Mississippi | $0.2280 | Not confirmed | — | 2025-10-01 |
| Montana | $0.0700 | Per 120 cu ft (source) | — | 2025-10-01 |
| New Brunswick | $0.4239 | Not confirmed | — | 2025-10-01 |
| North Carolina | $0.4030 | Per gasoline gallon equivalent (5.66 lb) (source) | — | 2025-10-01 |
| North Dakota | $0.2300 | Per 120 cu ft (source) | — | 2025-10-01 |
| Nebraska | $0.3180 | Per gasoline gallon equivalent (5.66 lb) (source) | — | 2025-10-01 |
| New Hampshire | $0.2220 | Per gasoline gallon equivalent (126.67 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| New Mexico | $0.1330 | Per gallon (126.67 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| Nova Scotia | $0.4225 | Not confirmed | — | 2025-10-01 |
| Nevada | $0.2100 | Per gallon (126.67 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| Ohio | $0.4700 | Per diesel gallon equivalent (139.30 cu ft or 6.38 lb) (source) | — | 2025-10-01 |
| Oklahoma | $0.0500 | Per gasoline gallon equivalent (126.67 cu ft) (source) | — | 2025-10-01 |
| Pennsylvania | $0.5760 | Per gasoline gallon equivalent (126.67 cu ft) (source) | — | 2025-10-01 |
| Prince Edward Island | $0.2324 | Not confirmed | — | 2025-10-01 |
| Rhode Island | $0.4000 | Not confirmed | — | 2025-10-01 |
| South Carolina | $0.2800 | Per gasoline gallon equivalent (126.67 cu ft, or 5.66 lb by weight) (source) | — | 2025-10-01 |
| South Dakota | $0.1000 | Per gasoline gallon (126.67 cu ft) (source) | — | 2025-10-01 |
| Tennessee | $0.2100 | Per gallon equivalent (5.66 lb) (source) | — | 2025-10-01 |
| Texas | $0.1500 | Per gasoline gallon equivalent (5.66 lb) or diesel gallon equivalent (6.38 lb), as the pump sells it (source) | — | 2025-10-01 |
| Utah | $0.2070 | Per gasoline gallon equivalent (5.66 lb) (source) | — | 2025-10-01 |
| Virginia | $0.3170 | Per gasoline gallon equivalent (5.66 lb) (source) | $0.1530 | 2025-10-01 |
| Wisconsin | $0.2470 | Not confirmed | — | 2025-10-01 |
| West Virginia | $0.2430 | Per gasoline gallon equivalent (126.67 cu ft or 5.66 lb) (source) | — | 2025-10-01 |
| Wyoming | $0.2400 | Per gasoline gallon equivalent (5.66 lb) (source) | — | 2025-10-01 |
Showing 45 of the 58 IFTA member jurisdictions. Click any jurisdiction for its own rate page, filing deadlines, and notes.