IFTA Tax Rates by State (2026)
Every IFTA jurisdiction, one page each: current diesel and gasoline tax rates, surcharge details, and how the state's rate plays into your quarterly filing and fueling strategy.
By the HaulMath editorial team · Updated $1
Key numbers at a glance
| Q4 2026 diesel IFTA | Rate per gallon |
|---|---|
| Highest (Pennsylvania) | 74.1¢ |
| High-cost tier (CA, WA, NJ, IL) | 56–98¢ |
| Low-cost tier (Gulf/Plains) | ~17–24¢ |
| Filing deadlines | Jan 31 / Apr 30 / Jul 31 / Oct 31 |
What you'll find on each state page
Each page carries the state's current verified rates — diesel, gasoline, and any surcharge taxes reported on separate IFTA lines — labeled with their effective period and the instruction every veteran knows by heart: confirm against the current quarter's official IFTA matrix before filing. Beyond the raw numbers, each page shows a worked three-state trip example, the fueling-strategy angle for that state versus its neighbors (buy-before-you-cross versus buy-after), and how the rate feeds the quarterly return our IFTA calculator computes.
All IFTA jurisdictions
Alaska and Hawaii are not IFTA members. Rates shown on state pages are verified per Q4 2026 with sources cited — fuel taxes move; the official quarterly matrix always wins.
Why operators keep a rates tab open
Fuel tax is roughly a third of operating cost, and IFTA makes it a routing decision. Crossing from a low-tax state into Pennsylvania or California without fueling first guarantees a bigger quarterly bill; fueling in the expensive state before a cheap-state run is prepaying tax you owed anyway. The state pages turn that instinct into arithmetic — pair them with the IFTA calculator at quarter-end and the fuel surcharge guide when brokers quote you all-in rates.
FAQ
How often do IFTA rates change?
Annually in most states, quarterly in some. The official IFTA matrix is republished every quarter — pull the current one before filing.
Which states have the highest IFTA rates?
Pennsylvania, California, Washington and New York are perennially at the top for diesel; Gulf and Plains states typically run lowest. State pages carry current verified figures.
What is an IFTA surcharge tax?
A separate tax some states add on top of the base rate, reported on its own IFTA line. State pages flag surcharges explicitly.
Do Alaska and Hawaii participate in IFTA?
No — the agreement covers the 48 contiguous states plus Washington DC.
How do I use these pages for trip planning?
Compare pump price minus tax at your fueling options, then the rates of states ahead. The IFTA calculator turns the plan into your quarterly numbers.