A refuse packer, a ready-mix mixer, a bucket truck, and a bobtail with a PTO-driven pump all burn clear, tax-paid highway diesel while the wheels are stopped. Most states will give the state motor fuel tax back on the share of that fuel, and they decide the share with a published allowance percentage instead of a meter. Nobody mails you the money. You file a separate state claim, and you keep trip sheets good enough to survive an auditor who wants to know what the truck was doing.
Who actually gets the money
The claimant is whoever bought the fuel with state tax in the price and burned some of it running equipment instead of turning wheels. That is almost always the fleet owner. The usual list of qualifying vehicles is short and physical: refuse packers, ready-mix mixers, cement pumpers, aerial and bucket trucks, sewer and vacuum trucks, car haulers with hydraulic ramps, and tank trucks whose offload pump runs off the transmission.
That last one is why this belongs on a jobber's desk twice. Your own tankwagons very likely run a PTO pump to push product into a customer tank, and the fuel that spins the pump is state-taxable diesel out of the propulsion tank. Your commercial customers, the concrete plant and the hauler and the utility contractor, are usually sitting on the same unclaimed refund and have no idea.
If the equipment had its own engine and its own tank, this question would never come up. You would fill that tank with dyed off-road diesel and pay no highway tax at all, which is the whole point of the red fuel rules covered in dyed diesel explained. PTO draws from the same tank that moves the truck down the road, so every gallon starts out taxed and the refund is the only way back.
Why IFTA does not hand it to you
IFTA settles fuel tax by miles. You report miles per jurisdiction and gallons purchased per jurisdiction, the return computes a fleet miles-per-gallon, and taxable gallons for each state come out of that division. PTO fuel produces zero miles. It quietly drags the fleet MPG down and then gets spread across every state the truck drove through, in proportion to mileage, whether or not the mixer ever poured a yard there.
So the IFTA return knows the gallons existed. It has no idea any of them ran a hydraulic pump. A handful of jurisdictions let you take the PTO allowance as a deduction from taxable gallons right on the quarterly return. Most want a separate refund claim filed with the state's motor fuel tax division, on its own form, on its own schedule. The federal 24.4 cents per gallon is a different animal and generally does not come back for PTO fuel drawn from the propulsion tank of a registered highway vehicle, so read IRS Publication 510 before you put anything on Form 4136. If the split between federal, state, and IFTA is fuzzy, motor fuel excise tax explained lays out which layer is which.
The allowance percentage is a guess the state agrees to in advance
No state expects you to meter PTO fuel. Instead each one publishes a percentage by vehicle type, and that percentage is applied to the total fuel consumed by the vehicle over the claim period. Thirty-five percent means thirty-five percent of everything that truck burned is deemed to have run the drum, regardless of what the drum actually drank.
The numbers move a lot by state and by body type, and states revise them. Pull your own state's current table before you file rather than borrowing a neighbor's. Broadly, published allowances tend to land in these bands:
- Ready-mix mixers. The high end of every table, commonly in the twenty to thirty-five percent range, because the drum turns loaded, empty, and while waiting to pour.
- Refuse packers. Usually mid-range, often fifteen to thirty percent, driven by compaction cycles per route.
- Aerial and bucket trucks, wreckers, hydraulic hoists. Lower, often ten to twenty percent.
- Tank trucks with PTO offload pumps. Lowest of the group, since the pump runs for minutes per stop rather than hours per shift.
Two rules trip people up. The allowance applies to fuel used by that unit, so it needs per-unit consumption, not a fleet total divided by trucks. And a vehicle with no qualifying body gets nothing, no matter how much it idles. Idling is taxable. Running equipment is not.
One mixer, then twelve
Take a single ready-mix mixer that burns 4,000 gallons a year. Say the state allowance for mixers is 35 percent and the state diesel rate in your claim period is 45.4 cents per gallon. Illinois indexes its motor fuel tax every July 1 and adds a surcharge on diesel over the gasoline rate, so pull the current figure from the Illinois Department of Revenue instead of trusting a rate you read anywhere, including here.
4,000 gallons times 35 percent is 1,400 refundable gallons. 1,400 times $0.454 is $635.60 back on that one truck, for one year. Run a twelve-mixer fleet and the same arithmetic produces about $7,627. That is real money for a filing that takes an afternoon once the fuel records exist, and most states let you reach back one to three years on an original claim, which can make the first filing several times the annual number.
What it is worth against the fuel bill
With U.S. retail diesel at $4.58 per gallon as of July 2026, per FuelDataPortal, that 4,000-gallon mixer is an $18,000 fuel line item. The refund is roughly three and a half percent of it. Nobody retires on that. It is also free, already paid, and sitting in a state account with your name on it, which is exactly the kind of quiet drain covered in where fuel margin leaks.
The forms, by name
Illinois uses Form RMFT-11-A, the claim for refund of Illinois motor fuel tax, filed with the Department of Revenue. Illinois expects a claimant to be registered before the first filing, so start there rather than mailing a cold claim. New York's Form FT-500 handles refunds of sales tax paid on petroleum products, and the Tax Department publishes the PTO percentages it will accept by equipment type. California claims come in on CDTFA-770-DU, the diesel fuel claim for refund on nontaxable uses, with exempt-use percentages set by CDTFA regulation.
Every other state has its own version under its own number, and a few fold the whole thing into the IFTA return. The rates and the agencies behind them are the same set of moving parts described in fuel tax by state. Filing frequency also varies, from quarterly to annual, and some states enforce a minimum claim amount that a two-truck operation will never clear in a single quarter.
The trip sheet is the claim
A refund claim is a number on a form. An audit is the paper behind the number. What auditors ask for is consistent across states, and it is all things a dispatcher already half-tracks:
- Per-unit fuel records. Gallons dispensed into that specific truck, by date, tied to a pump ticket or a bulk plant meter reading. Fleet totals do not support a per-unit allowance.
- Proof the tax was paid. Supplier invoices showing the state motor fuel tax as a line, which is one more reason to know how to read a fuel invoice.
- Evidence the equipment ran. Yards poured, containers dumped, hours on the aerial, delivery tickets per stop. Something dated that shows the body did work on the days you claim.
- Vehicle identification. Unit number, VIN, plate, and body type on the claim, matched to the registration.
This is where the refund usually dies. The gallons live in a fuel management system, the work lives in dispatch, the invoices live in accounts payable, and reconciling them by hand for twelve trucks across three years is grim enough that nobody does it. Pulling per-unit gallons and dated delivery tickets out of one back office is the sort of thing FastDragon exists to make boring. Whatever system you use, the test is simple: can you produce, for one unit, one year, the gallons in and the work done, without a spreadsheet archaeology project?
Where to start
Count the trucks in your fleet and your customers' fleets with a body that runs off the engine. Find your state's allowance table and the form number that goes with it. Run the math on one unit for one year. If the number clears a few hundred dollars, it clears again next year, and the year after, for as long as the truck runs.
Questions people ask
Does a reefer unit on a trailer qualify?
It depends on where the fuel comes from. Most refrigeration units have their own engine and their own tank, and that tank should be filled with dyed off-road diesel, which never carried highway tax in the first place. If the reefer draws from the tractor's propulsion tank, some states publish a separate allowance percentage for it. Check the table, and check whether your state calls it auxiliary power rather than power take-off.
If a truck buys fuel in one state and pours concrete in another, which state owes the refund?
The state that received the tax. For an IFTA-licensed vehicle, tax follows miles rather than purchases, so the PTO adjustment is generally handled against the jurisdictions on the quarterly return in whatever way each one allows. For a local, non-IFTA truck operating on a single state's plates, you claim from the state where the fuel was bought and taxed. Mixed fleets often end up filing both ways, which is normal.
Is the refund check taxable income?
Effectively yes, in the sense that it has to land somewhere on the books. If you expensed the fuel gross, the refund reduces fuel expense or shows up as other income in the year received, and it will not match the year the fuel was burned when you file a three-year look-back claim. Give your accountant a heads up before the first big check arrives, and give it a home in the chart of accounts.
What happens to the claim if we spec electric PTO on new trucks?
There is nothing left to refund, because there is no taxed fuel being burned to run the equipment. Battery-driven pumps and packers cut the fuel spend by more than the refund was worth, so the trade is usually favorable. Just remember to drop those unit numbers from next year's claim rather than filing the same list out of habit, because claiming an allowance on a truck whose PTO never touched diesel is the fastest way to turn a routine refund into an audit.