On most 2026 lanes, full truckload starts beating LTL somewhere between 6 and 10 standard pallets — roughly 10,000 to 15,000 lb. Below six pallets, LTL nearly always wins, because you pay only for the trailer space you use. Past ten, the math flips hard: a dry van costs about $3.01 per mile all-in (DAT national average, July 2026) whether it is a quarter full or completely full, while LTL keeps billing by weight and class — typically $0.20–$0.45 per pound — until it quietly costs more than the entire truck. The break-even is not one number, though. It moves with distance and density, and a set of tariff rules re-prices large LTL shipments earlier than most shippers expect. Here is the actual math.
Why does FTL get cheaper per pallet while LTL doesn't?
The two modes price on different axes. LTL is priced per hundredweight against your freight class, then stacked with accessorials — the seven inputs that set an LTL price all scale with the shipment. FTL is priced per mile for the whole trailer: at July 2026 DAT averages, dry vans ran $3.01/mile all-in ($2.39 linehaul before fuel), reefers $3.42, flatbeds $3.64, with van linehaul easing to about $2.25/mile by mid-August.
That difference in axes is the whole story. Load a van to its ~45,000 lb legal payload on an 800-mile lane and you're paying roughly 4–5 cents per pound; the same pound in the LTL network costs $0.20–$0.45. LTL cost climbs nearly linearly with every pallet you add — FTL cost barely moves. Two lines with different slopes always cross, and in 2026 they cross earlier than the old "half a trailer" folklore suggests.
Where is the break-even in 2026?
The table below prices a plain-vanilla shipment — standard 48×40 pallets, 48 inches tall, 1,000 lb each, single-stacked, on an 800-mile lane. LTL uses the published 2026 range of $0.20–$0.45/lb; FTL uses $2.30–$3.01 per all-in mile ($1,840–$2,410 for the lane, flat, no matter the pallet count).
| Pallets | Weight | Linear feet | LTL estimate | FTL (flat) | The call |
|---|---|---|---|---|---|
| 6 | 6,000 lb | 12 ft | $1,200–$2,700 | $1,840–$2,410 | Gray zone — quote both |
| 8 | 8,000 lb | 16 ft | $1,600–$3,600 | $1,840–$2,410 | FTL wins more often than not |
| 10 | 10,000 lb | 20 ft | $2,000–$4,500 | $1,840–$2,410 | FTL usually cheaper |
| 12 | 12,000 lb | 24 ft | $2,400–$5,400 | $1,840–$2,410 | FTL |
| 14 | 14,000 lb | 28 ft | $2,800–$6,300 | $1,840–$2,410 | FTL, almost always |
Distance shifts the crossover. On a 500-mile lane the truck costs only $1,150–$1,500, dragging the break-even down toward 4–6 pallets; on very long hauls, deeply discounted LTL contract rates can stretch LTL's win zone a little higher. Density shifts it too: these rows assume 18.75 lb per cubic foot — class 70 on the current density scale. Lighter, fluffier freight rates at a worse class and jumps to FTL earlier.
The 12-linear-foot trap re-prices LTL before you get there
Notice the linear-feet column: six single-stacked standard pallets, loaded two across at 4 feet per row, already occupy 12 feet of deck — and that is exactly where LTL capacity rules begin. Old Dominion applies its linear-foot rule at 10 feet; XPO, Estes, and Saia at 12; ABF at 15. Cross the threshold and the shipment can be re-rated as if it weighed roughly 1,000 lb per linear foot, a penalty that has produced documented invoice jumps of 50–150% over the quoted rate.
The cubic capacity rule is the same trap for light freight: exceed about 750 cubic feet at under 6 lb/cu ft and carriers re-rate the whole shipment at a 6 pcf minimum, often at class 125. Fourteen single-stacked 48-inch pallets is ~747 cubic feet — one more pallet, or a few inches of height, trips it. Long or bulky handling units carry their own overlength fees, which is why the trailer-space math matters as much as the scale weight. If your shipment lives anywhere near these thresholds, a class-based LTL quote is a provisional number, not a price — exactly the re-rating problem covered in the 9-point quote checklist.
A worked example: 9 pallets, 12,000 lb, Chicago to Dallas
Nine pallets at 1,333 lb each, 48×40×48, is 480 cubic feet and 25 lb/cu ft — a solid class 65 shipment, 18 linear feet of deck. The lane is about 925 miles.
- LTL: at $0.20–$0.45/lb, $2,400–$5,400 — and at 18 linear feet the shipment is over every major carrier's threshold, so it will be volume-rated or penalty-rated regardless of what the class tariff says.
- FTL: 925 miles × $2.30–$3.01 all-in = $2,130–$2,780, one driver, zero terminals, 1–2 day transit.
- Partial truckload: typically 20–40% under comparable LTL — commonly landing in the high $1,000s to mid $2,000s here, without the terminal network.
The truck — full or partial — wins on price in most quotes, and it isn't close on risk: this freight would otherwise cross 3–5 crossdocks. LTL only takes this shipment if a strong contract volume rate beats about $2,100, which is a question the per-mile benchmarks let you sanity-check in seconds.
The four checks that actually pick the mode
Pallet count starts the decision; it doesn't finish it. Run all four:
| LTL | Partial (PTL) | FTL | |
|---|---|---|---|
| Pricing basis | Class × cwt + accessorials | Linear feet of deck | Per mile, whole truck |
| Sweet spot | 1–5 pallets | 6–14 pallets / 5,000–15,000 lb | 15+ pallets, or 10+ when timing matters |
| Transit (800 mi) | 2–6 days | 1–4 days | 1–2 days |
| Handling | 3–5 terminals, touched 2–4× | Usually no terminals | Loaded once, unloaded once |
| Damage exposure | Claims on ~1–3% of shipments | Low | Lowest |
Count is the table above. Density decides how brutally LTL prices you: low-density freight eats a high class and flirts with cubic rules, so it should defect to the truck earliest. Value weighs handling risk — every extra crossdock is a claims opportunity, so high-value freight often justifies FTL even when LTL quotes a few hundred dollars less. Timing is the tiebreaker: LTL transit is a window, not a promise, while a full truck drives straight through — just don't hold the driver, because FTL detention runs $50–$100 per hour after the free window.
The practical rule for 2026: under 6 pallets, book LTL and move on. Over 10, price the truck first. In between, get all three numbers — class-rated LTL, partial, and FTL — because in the gray zone the cheapest mode changes lane by lane, and the quote that looks cheapest on screen is the one most likely to be re-rated after pickup.