How Flatbed Rates Are Built: Linehaul, Fuel, Tarp, and Oversize

The rate confirmation is the financial version of the load plan. It should identify the parties, pickup and delivery windows, commodity, weight, dimensions, trailer, total compensation, and each extra service. An all-in figure is not necessarily a complete quote: it may hide tarp labor, permits, or an unloading obligation that later becomes a dispute.

Linehaul and market pricing

Linehaul is the base movement charge, quoted as a flat amount or cents per loaded mile. In ordinary markets, flatbed pricing often works out to $2.50–$4.50 per loaded mile, compared with roughly $1.80–$3.00 for dry van. Flatbed earns a premium because equipment is less interchangeable, securement takes time, weather exposes the freight, and the carrier may reposition a specialized trailer empty.

Spot pricing is what a qualified carrier will accept today based on truck availability, reload prospects, weather, project deadlines, and the load board. Contract pricing is a negotiated lane rate supported by recurring volume and predictable tendering. It is commonly lower than an urgent spot quote but gives the shipper capacity and a service standard. A shipper with eight loads per month can exchange some market upside for fewer falloffs.

The flatbed-van spread is a useful market signal. When construction season, harvest, or a major project absorbs open-deck equipment, flatbed tightens first because a van cannot substitute for a flatbed. A low van index does not automatically make a flatbed lane cheap.

Fuel surcharge

Many carriers use the Department of Energy weekly diesel index and an agreed matrix. For example, a matrix might pay $0.40 per mile when DOE national diesel is $4.00 per gallon and $0.32 when it is $3.50. Breakpoints differ by contract, but the FSC normally sits on top of linehaul and moves weekly. Ask whether “$3.20 per mile” means linehaul only or includes fuel; otherwise two quotes cannot be compared.

Line item	What it covers	Typical range	Negotiable?
Linehaul	Tractor and trailer movement	$2.50–$4.50/mile	Yes
Fuel surcharge	DOE-indexed diesel	$0.32–$0.40/mile in example matrix	Formula usually fixed
Tarp	Driver labor and cover	$150–$450; lumber to $600	Yes
Permit	State oversize authorization	$30–$250/state	Fee is pass-through
Pilot car	Escort vehicle and labor	$2–$5/mile/car	Route dependent
Layover	Overnight delay	$200–$500/night	Yes
Driver assist	Additional labor	$75–$200/hour	Yes
Extra stop	Stop beyond one pickup/delivery	$50–$200/stop	Yes

Tarp, permits, and escorts

Tarping is separate work. A standard single tarp commonly adds $150–$450; lumber that needs several 24-ounce covers can reach $600. The confirmation should identify the tarp type, quantity, and fee. “Tarp if needed” is not a usable instruction; write “two 24 oz lumber tarps, $450.” The full specification is in /guides/flatbed-tarping-guide.

Oversize permits may cost $30–$250 per state depending on dimensions and jurisdiction. Pilot cars commonly run $2–$5 per mile for each required vehicle. On a 2,000-mile permitted movement, permits plus escorts can add $2,000–$8,000 before linehaul. Width, height, length, axle spacing, and route drive the number. State thresholds are not uniform, so the confirmation should identify who applies, who advances the money, and how permit delays are handled.

Accessorials and short lanes

Layover is often $200–$500 per night when the shipper or receiver prevents same-day loading or delivery. Driver-assist labor commonly runs $75–$200 per hour and may include unbanding, tarp removal, dunnage, or physical unloading. Extra stops beyond one pickup and one delivery often cost $50–$200 each. Detention should have a clock trigger, signed in/out times, and a stated hourly rate; the related guide is /guides/detention-flatbed-loads.

A 250-mile move can carry a $1,200–$1,800 minimum even when a simple CPM calculation suggests less. At $1,500, the apparent rate is $6.00 per loaded mile, but that is not a long-haul market rate. It pays for dispatch, positioning, securement, fuel, appointment time, and the carrier’s lost opportunity on a short day.

Build a quote from the numbers

Suppose linehaul is $3.20 × 800 miles = $2,560. An FSC of $0.38 × 800 adds $304. Add a $325 tarp and $180 in permits, and the documented subtotal is $3,369 before delay. A $3,500 all-in quote is attractive only if it includes the same tarp, permit, and fuel assumptions. If it excludes escort or pays detention only after four hours, it is not comparable.

For contract lanes, also examine empty miles and return likelihood. A carrier moving a load from Ohio to Texas may price the outbound differently if Texas has poor reload density for that trailer type. A reliable shipper with clean appointments can earn a better rate than an equally distant shipper that routinely holds trucks three hours. Service friction is part of a carrier’s cost model.

Read before signing

Confirm pickup and delivery windows, cargo weight, dimensions, trailer, tarp obligation, securement labor, permits, pilot cars, layover, detention, cancellation, and unloading responsibility. “Rate includes all accessorials” may erase legitimate permit or delay reimbursement. “Detention after two hours with signed arrival and release times” creates a workable process.

Do not let the BOL contradict the confirmation. If the BOL says full tarp coverage while the rate confirmation says no tarp, the driver is caught between conflicting instructions. Keep written approval for a changed destination, extra stop, revised dimensions, or a receiver-directed unload. For claims and surface protection, review /guides/flatbed-cargo-insurance; for tarp labor, use a line item rather than a verbal promise.