Permanent Bonus Depreciation and Fleet Replacement Timing: What the One Big Beautiful Bill Means for Adding an International LT Series Truck
Why Fleet Replacement Timing Used to Be a Tax Decision First
For a hauling or trucking business running several trucks, replacing one unit in the fleet used to be as much a tax-timing decision as an operational one. Under the pre-2025 rules, bonus depreciation was scheduled to decline every year, from 80% in 2023 down to 60% in 2024 and 40% in 2025, on its way toward zero by 2027 under the original 2017 Tax Cuts and Jobs Act schedule. A fleet manager deciding whether to replace an aging truck in October or wait until January was, in practice, also deciding how much of that purchase to write off in year one.
The One Big Beautiful Bill Act (OBBBA), signed into law on July 4, 2025, permanently restored 100% bonus depreciation for qualifying business property acquired under a contract signed on or after January 19, 2025 and placed in service after that date. We're using the International LT Series as the illustrative truck in this piece, a common Class 8 platform in International's current lineup built around the Cummins X15 engine, but the fleet-replacement timing question discussed here applies to any qualifying truck purchase, dump, mixer, or over-the-road tractor, from any of our approved manufacturers.
What Changes for a Fleet Running a Rolling Replacement Schedule
A lot of established trucking and hauling operations don't buy one truck and keep it forever; they run a rolling replacement schedule, cycling trucks out of the fleet every few years as they age past the point where repair costs and downtime start outweighing the benefit of keeping them. Under the old declining-percentage rules, that rolling schedule collided with the tax calendar: a truck replaced in year X got a different bonus-depreciation percentage than the functionally identical truck replaced in year X+1, purely based on which year it happened to land in, not on the economics of the fleet itself.
With the percentage now permanently fixed at 100% for qualifying property, a fleet's replacement schedule can be driven by the actual economics of each truck: mileage, maintenance cost trend, resale value, and operational need, rather than by a shrinking tax incentive pushing purchases into one calendar year over another. That's a meaningful, practical simplification for any business managing more than one or two trucks.
Both New and Used LT Series Trucks Qualify
A meaningful share of fleet-replacement purchases in this industry are used trucks bought off a dealer's lot rather than new units ordered from the factory, and OBBBA's restored 100% rate applies to both, as long as the truck meets the definition of qualified property under Section 168(k), acquired under a contract signed on or after January 19, 2025, and placed in service after that date. A used International LT bought to replace an aging unit in the fleet qualifies for the same full first-year write-off as a new one off the line, assuming the other requirements are met. For a fleet that has historically relied on the used market to manage replacement costs, that's a real, practical advantage, not a minor footnote.
The date that actually controls is the placed-in-service date, not the date on the purchase order. A replacement truck put to work hauling loads on January 20, 2025 or later, under a contract signed on or after January 19, 2025, generally qualifies for the full rate; one placed in service earlier, or committed to under an earlier contract, follows the lower percentage that applied before the law changed.
Why the Over-6,000-Pound Threshold Keeps This Simple
One detail that keeps the depreciation picture clean for a truck like the LT Series: the Section 280F luxury-auto depreciation limits, which cap annual depreciation on passenger automobiles generally under 6,000 pounds of gross vehicle weight, simply don't apply here. A Class 8 LT Series tractor or straight truck is well clear of that threshold, which removes an entire layer of the depreciation-limitation analysis that applies to lighter pickup trucks and SUVs used in a business. That's a genuinely simpler starting point for a fleet-replacement decision than the vehicle-tax-strategy content aimed at smaller work trucks.
How Financing Structure Decides Who Actually Gets the Deduction
As with any truck purchase, bonus depreciation follows tax ownership, not the payment method chosen. An LT Series truck financed through a conventional truck loan or an Equipment Finance Agreement is generally treated as owned by the borrower for tax purposes from day one, which is what makes the deduction available to the fleet operator, even while the lender holds a lien on the title until the loan is paid off. A true, fair-market-value lease works differently, with the lessor typically retaining tax ownership and the deduction generally not passing through to the business making lease payments. Which structure makes sense for a given replacement truck depends on the fleet's tax position for the year, and that's a conversation for your tax professional, not something to decide from a general article.
The EBITDA Interest-Deduction Restoration Matters More as a Fleet Grows
OBBBA also permanently restored the EBITDA-based calculation for the Section 163(j) business interest expense limitation, effective for the 2025 tax year. From 2022 through 2024, that limitation ran on an EBIT basis, which excluded the depreciation and amortization add-backs that capital-intensive businesses rely on, tightening the effective cap on deductible interest specifically for fleets carrying multiple truck loans at once. A business running five, ten, or more financed trucks, adding an LT Series unit to the mix, is exactly the kind of operation that calculation used to constrain.
With the EBITDA basis restored, depreciation and amortization are added back into the formula again, generally creating more room to deduct interest paid across a fleet's financing than existed under the 2022-2024 rules. For a fleet weighing whether financing one more truck pushes total interest expense toward a deduction ceiling, that restored room is a real, practical factor in the decision, though exactly how it applies to your specific fleet and debt load depends on your full return and is a question for your tax professional.
What a Permanent Rate Doesn't Change
None of this changes how a lender actually underwrites a replacement truck purchase. Time in business, the fleet's credit and payment history, and the specific truck's collateral value still drive approval and terms the same way they did before OBBBA. The deduction also only benefits a fleet that has taxable income to offset in the year it's claimed; an operation running at a loss doesn't see immediate value from a larger write-off, though the unused deduction may carry forward depending on the business's broader tax picture. None of this is tax advice, and the specific treatment of any purchase depends on your fleet's full financial picture. Confirm the details with your tax professional before making a purchase decision based on anything in this piece.
A Worked Example, for Illustration Only
Say a hauling fleet replaces an aging unit with an International LT Series day cab configured for local and regional work, in a purchase-price range in the neighborhood of $150,000 to $175,000 as of late 2026, a realistic range for this configuration. Under the pre-OBBBA 2025 schedule, that purchase would have been capped at a 40% first-year bonus-depreciation write-off, with the remaining 60% spread across the truck's normal MACRS recovery period. Under the restored 100% rate, assuming sufficient taxable income exists to use it, the full purchase price can potentially be expensed in the placed-in-service year instead. The real dollar impact depends heavily on the fleet's tax bracket, other income for the year, and how Section 179 interacts with bonus depreciation on the same purchase, which is exactly why this needs to run through an actual return rather than a general estimate. This example illustrates the mechanics only.
Why a Rolling Fleet Benefits More From Permanence Than a One-Truck Buyer
A business buying a single truck gets a one-time benefit from this rule change. A fleet running a continuous replacement cycle gets a repeated one: every truck added or replaced going forward, this year and in years to come, qualifies for the same 100% rate without the shrinking-percentage pressure that used to make the fourth quarter of every year feel like a deadline. That's a structurally different, and larger, benefit for an operation that's going to keep buying trucks year after year than it is for a business making a single purchase and moving on.
State Tax Treatment Still Varies
A permanent federal rule doesn't guarantee matching treatment on your state return. A number of states decouple from federal bonus depreciation, fully or partially, requiring an addback and a slower state-level depreciation schedule even when the federal return captures the full 100% deduction. This isn't new with OBBBA and varies state by state. If your fleet's trucks are based and registered primarily in a state that has historically decoupled from federal bonus depreciation, that's a separate factor your tax professional needs to account for apart from the federal calculation.
Loan, EFA, or Lease: Still Worth Deciding Deliberately for Each Truck
Even with the federal tax-timing question simplified, how each LT Series replacement is structured still carries real weight. A conventional truck loan or an EFA that makes the business the tax owner from day one is what makes bonus depreciation available directly. A true, fair-market-value lease trades that deduction for other advantages, like potentially simpler end-of-term decisions or different balance-sheet treatment, but the deduction generally doesn't flow through to the lessee in that structure. For a fleet replacing multiple trucks over time, it's worth revisiting this choice for each unit rather than defaulting to the same structure every time, since the right answer can shift as the fleet's income, debt load, and growth plans change.
Nationwide Financing for Growing Fleets
BFC Equipment Loans finances dump trucks, mixer trucks, and semi trucks for hauling and trucking operations across the country, from a business adding its second truck to an established fleet running a rolling replacement schedule. We see meaningful volume out of Florida and the Southeast given our roots there, but the tax mechanics discussed in this piece apply the same way whether your LT Series truck is replacing a unit hauling aggregate outside Tampa or running regional freight out of the Midwest.
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