Dyed diesel relief through December 31: Accrue the Deferred 24.4 Cents Per Gallon Before It Flatters Your Job Margins

Dyed diesel relief lets a contractor run red-dyed fuel in highway trucks through December 31, 2026 without federal penalties, but the 24.4 cents per gallon backup tax is deferred, not forgiven. Accrue it as a liability on every highway gallon, keep the gallon log the IRS says you can skip, and don't let the savings flatter job margins.

Why this matters now

On 2026-10-21 the IRS issued IR-2026-125, temporary reporting and recordkeeping relief for certain fuel uses. It says the IRS "will not challenge temporary failures to meet return-filing, reporting or recordkeeping requirements solely attributable to liability under section 4041(a) arising from taxable uses of dyed diesel occurring on or after Oct. 1, 2026, and before Jan. 1, 2027." That covers filing Form 720 solely to report the liability, reporting it on a Form 720 you file anyway, and "creating or maintaining records solely to substantiate that liability." The release adds that the IRS will not require later filing, reporting, or reconstruction of records after December 31, 2026, and that it is considering a grace period for residual red dye left in tanks once the relief ends.

That notice is the third document in a three-week sequence. On 2026-10-05 the President signed Executive Order 14435, Emergency Tax Relief on Diesel Fuel. It directs Treasury to decide whether the federal diesel tax can be deferred from October 5 through December 31, 2026 "without any penalties, interest, additional amount, or addition to the tax," and tells the Secretary to "explore avenues, including legislation, to eliminate the obligation to pay the amounts deferred." On 2026-10-14 the IRS followed with IR-2026-122, announcing it "will not impose a penalty when dyed diesel fuel is sold for use or used on highways nationwide," retroactive to October 1 and running through December 31. Collection and enforcement are suspended, fuel compliance officers have been reassigned, and no federal inspections of on-road dyed fuel use will occur.

Contractors already buy dyed diesel for excavators, loaders, and generators. Now the same yard tank can legally fill the dump trucks and service pickups for three months, at a price that doesn't include the federal highway tax. Trade coverage has explained the rule. The Associated General Contractors told members on 2026-10-08 that "a delayed tax bill is still a tax bill, and the executive order does not make clear that those taxes ultimately will be forgiven." What nobody has written down is what the bookkeeper does on Monday: which gallons carry a liability, what the entry looks like, and how to keep the deferral from showing up as margin on the October WIP.

What each document does and does not do

The three documents are easy to blur together, and the blur is where accounting mistakes start. One is an order to Treasury, one is a penalty waiver, and one is a reporting waiver. None of them is a repeal.

Two points matter for the books. First, section 4041(a) puts the backup tax on dyed diesel that is sold for use or used in a highway vehicle, so when a contractor pumps dyed fuel from its own tank into its own truck, the contractor is the taxpayer. Second, nothing in the three documents removes that tax. EY's tax alert of 2026-10-19 put it plainly: "a deferral of the payment obligation should not be construed as a repeal or forgiveness of the underlying tax liability," and companies should "continue to track and account for these liabilities appropriately." The IRS has promised separate guidance on the payment postponement under section 7508A and on how Form 720 will handle it. Until that arrives, the amount is a liability with an unknown due date.

How to book highway gallons of dyed diesel: a worked example

Ridgeline Excavating runs eight tandem dump trucks and three service pickups on the road, plus a fleet of excavators and loaders that never leave the site. It has always bought dyed diesel for the equipment and clear diesel at the card lock for the trucks. Starting October 6 it fills everything from the yard tank. Between then and December 31 the highway vehicles burn 24,000 gallons. The off-road equipment burns another 40,000, which stays exempt exactly as it always was.

Dyed diesel is delivered at $4.05 a gallon. Clear diesel at the card lock would have averaged $4.30 over the same weeks. Cash kept at the pump is $0.25 times 24,000 gallons, or $6,000. The deferred federal tax on those gallons is $0.244 times 24,000, or $5,856. If Treasury eventually sets a payment date, the real saving is $144. If Congress eliminates the deferred amount, the saving is $6,000, but that gain belongs to the period the law passes, not to the jobs the trucks hauled for in October. The numbers are illustrative; your price gap will differ by region and supplier.

The monthly entry

Each month, from the dispensing log, Ridgeline pulls the highway gallons by truck. November shows 8,000 gallons. The first entry charges the fuel itself: debit job cost, fuel, $32,400, allocated by truck and job, and credit fuel inventory $32,400 (or accounts payable, if the firm expenses fuel at delivery). The second entry recognizes the tax: debit job cost, fuel excise accrual, $1,952, allocated the same way, and credit a liability account named Deferred federal diesel excise tax payable for $1,952.

The off-road gallons get only the first entry. No tax was ever imposed on dyed fuel in an excavator, and nothing in October changed that. The result is that each job carries the same fuel burden it would have carried on clear diesel, less the six tenths of a cent that is the true difference between the two prices. The liability sits on the balance sheet as a point-in-time amount that grows by 24.4 cents for every highway gallon. The expense is a flow, charged to the jobs that burned the fuel in the month they burned it.

Three ways it ends

If the IRS guidance under section 7508A sets a payment date, the liability stays where it is and moves to current. Put the amount on the 13-week cash forecast on that date and plan the Form 720 deposit. If legislation eliminates the deferred amounts, debit the liability and credit other income in the period the law is enacted. Don't reopen closed jobs to push the credit back into their margins; those jobs were costed correctly on the facts that existed when the fuel burned. If neither happens by year end, the liability stays on the balance sheet, and the firm's CPA decides how to present and disclose it in the year-end statements.

The alternative, booking only the $4.05 and nothing else, overstates gross profit by 24.4 cents on every highway gallon. On a job that used 3,000 highway gallons, that is $732 of margin the company may still owe. Across the quarter it is $5,856 of profit on a bonded contractor's statements that could turn into a payable in January. Sureties and lenders read the liability section first. A deferral that shows up as margin on the WIP schedule is a conversation you would rather not have during the renewal.

Accounting controls for the deferred diesel tax

Source data: the dyed fuel delivery invoices with gallons and price; the tank meter or fuel management system readings; the dispensing log that assigns gallons to a unit number and a job; the equipment list that marks each unit as highway or off-road; and the three federal documents saved as they read on the day you relied on them, with the date captured. Keep this set even though IR-2026-125 says you need not keep records solely to substantiate the section 4041(a) liability. The IRS waived its record requirement. It did not waive your lender's, your surety's, or your own need to know what you owe.

Calculation: highway gallons times $0.244 equals the month's addition to the deferred liability. Highway gallons plus off-road gallons must equal gallons dispensed from the tank, and dispensed gallons plus the closing tank reading must equal the opening reading plus deliveries. Recompute the price gap each month from the actual invoices, because the cash advantage of dyed fuel over clear fuel is the gap, not the tax. Keep the liability as a cumulative balance and the expense as a monthly flow. Adding the quarter's accrual to the closing liability double counts it.

Review: a second person, or the owner on a different day, ties the dispensing log to the tank reconciliation, confirms every highway unit has an accrual and no off-road unit does, agrees the liability roll-forward (opening balance, plus accruals, less payments or reversals, equals closing balance) to the general ledger, and checks that the fuel excise accrual landed on the same jobs as the fuel it rode in on. Any highway gallons with fuel cost but no accrual line are an exception. So is any accrual on a unit the equipment list calls off-road.

Decision: the owner decides whether to put dyed fuel in highway trucks at all, after seeing the price gap next to the state rules and the supply risk for the off-road fleet. The controller decides to accrue, and at what rate, and documents why. The CPA decides the filing position when the section 7508A guidance arrives, decides year-end presentation and disclosure, and decides whether any eventual elimination is income or something else. Each open item gets a name and a date.

Limits and common mistakes

The relief is federal. State diesel taxes, state dyed-fuel penalties, and state inspection programs continue unless your state has issued its own relief, and several states tax diesel at rates higher than the federal 24.4 cents. Check your state before the first highway truck is fueled from the dyed tank. A state penalty can erase a quarter of federal savings in one stop.

The two windows don't line up. The executive order speaks of October 5 through December 31. The IRS penalty and reporting relief runs from October 1. Gallons pumped between October 1 and October 4 are inside the IRS relief and outside the order's deferral language. Accrue them like the rest and let the CPA sort out the edge when guidance arrives.

Residual dye is a January problem. A highway truck fueled with dyed diesel in December will still show red in a tank sample in January. The IRS said it is considering a grace period but has not issued one. Plan to run highway tanks down and refill with clear fuel in the last weeks of December unless guidance says otherwise.

Supply is the bigger operating risk. The Energy Marketers of America warned that opening dyed fuel to highway users could put pressure on supplies that farms, heating customers, and construction equipment also need. Saving 24 cents a gallon on the trucks is a poor trade if the excavators sit idle for a day because the delivery was short. Watch the delivery schedule, and read the input cost re-estimate you ran on open jobs with fuel supply in mind.

The third-quarter Form 720 is unaffected. It covers July through September, is due November 2, 2026, and should be filed and paid as usual. The fourth-quarter return is where the deferred gallons would normally appear, and the IRS has said it will not require that reporting for this window. What the IRS does not require and what you owe are different questions. Distributors who sell dyed fuel to others for highway use have their own section 4041(a) exposure as sellers, which this article doesn't cover.

This article covers bookkeeping and controls. It does not tell you whether to use dyed fuel on the road, whether the deferred tax will be collected, or how your state will treat it. Those are questions for your CPA and your fuel supplier, and the person who ties out labor to job cost each month should own the fuel tie-out too.

Frequently Asked Questions

Is the federal tax on dyed diesel used on the highway forgiven?

No. Executive Order 14435 defers the tax and tells Treasury to explore avenues, including legislation, to eliminate the deferred amounts. The IRS has waived penalties and reporting for October 1 through December 31, 2026, but neither document repeals the section 4041(a) tax, so treat it as a liability until a law or IRS guidance says otherwise.

Do I still need a gallon log if the IRS says I don't have to keep records?

For federal reporting between October 1 and December 31, 2026, no. For your books, yes. The log of dyed gallons pumped into highway vehicles is the only basis for the liability you accrue, for the job cost you charge, and for the reversal you book if the tax is later eliminated.

How do I record dyed diesel pumped into a dump truck in QuickBooks Online?

Charge the fuel cost to the job as usual, then post a second line of 24.4 cents per gallon to job cost with the credit to a liability account named for the deferred federal diesel excise tax. Gallons burned in off-road equipment get only the first entry, because that use was never taxed.

Does the relief cover state diesel taxes and state dyed-fuel rules?

No. The IRS relief applies to federal tax only. State fuel taxes, state dyed-fuel penalties, and inspection programs continue unless your state has issued its own relief, so check your state before a single highway truck is fueled from the dyed tank.

What happens to red dye left in my truck tanks after December 31, 2026?

The IRS said in IR-2026-125 that it is aware of concerns about residual red dye after the relief period ends and is considering a grace period or other mitigation measures, with further guidance to follow. Until that guidance exists, plan to run highway tanks down and refill with clear diesel before the new year.

Once the accrual is in place, job margins by truck, by job, and by month mean what they say, and the deferred liability is one number on the balance sheet instead of a surprise in January. FinBoard reads your QuickBooks Online ledger into one reporting view with drill-down to the entries behind every figure, so the fuel line on a job report and the excise accrual behind it are one click from the dispensing log that created them. See how FinBoard supports construction job cost reporting.