How do you book an LTL shipment?
You book an LTL shipment by gathering the shipment details (origin, destination, weight, dimensions, and freight class), requesting quotes from multiple carriers, choosing a rate and pickup window, then completing a bill of lading that matches exactly what you declared. Getting the class and weight right upfront avoids reweigh and reclassification charges later.
LanePilot is the LTL TMS for small shippers, not a freight broker TMS like the discontinued LoadPilot. Everything below applies whether you book through LanePilot, a carrier's own portal, or by phone, because the underlying process is the same either way.
1. Gather the shipment details before you request a quote
Every LTL quote is built from the same core inputs, and getting them right before you ask for a rate is what keeps the final invoice close to the quote. You need:
- Origin and destination, including zip codes, since LTL rates are lane-specific.
- Total weight of the shipment, in pounds.
- Dimensions of each pallet or handling unit (length, width, height), used to calculate density.
- Commodity description and the correct NMFC freight class.
- Accessorial services needed: liftgate at pickup or delivery, inside delivery, residential delivery, limited-access location, or a specific delivery appointment.
- Pickup window (date and ready time) and delivery deadline if there is one.
A vague weight or a guessed class is the single most common reason an LTL invoice ends up higher than the quote. The rest of this guide explains why.
2. Get the freight class right, because it drives the rate
The National Motor Freight Classification (NMFC), maintained by NMFTA, assigns every shipment a class from 50 to 500 based on four factors: density, handling, stowability, and liability. NMFTA has shifted the NMFC toward density (weight per cubic foot) as the primary rating factor in most classifications, most recently through NMFTA Docket 2025-1 (July 2025) and Docket 2026-1 (February 2026), so the same commodity can land in a different class depending on how it is packed and palletized. NMFTA defines density as the weight of your shipment divided by its volume, measured in pounds per cubic foot. The standard industry calculation: measure length times width times height in inches, divide by 1,728 to get cubic feet, then divide weight by cubic feet to get pounds per cubic foot.
Booking with a lower class than your freight actually rates at does not lower your price, it sets up a reclassification once the carrier measures the freight at the terminal. Measure before you book, do not estimate.
3. Request and compare quotes
With accurate details in hand, request rates from more than one carrier. A quote comparison should weigh price against transit time and how a carrier actually performs on your specific lane, not just the network-wide average. Our guide to comparing LTL carriers without a TMS covers what to look for beyond the base rate, including accessorial schedules and terminal coverage on your corridor.
Whatever rate you accept, save the quote itself. It becomes the reference document you will need if the eventual invoice does not match.
4. Complete the bill of lading accurately
The bill of lading (BOL) is the legal receipt for the shipment and the document a carrier rates against once freight is in its hands. Under 49 CFR Section 373.101, a for-hire motor carrier's bill of lading must show the consignor and consignee, the origin and destination, the number of packages, a description of the freight, and its weight or measurement. Fill in the declared weight, class, and dimensions to match what you booked, not a rounded estimate. Whatever is on the BOL is what the carrier checks its terminal measurements against, so a mismatch here is where reclassification and reweigh disputes start.
5. What happens at pickup and in transit
The driver picks up the freight and signs the BOL, confirming piece count and general condition, not necessarily verifying exact weight or class on the spot. Once the shipment reaches the carrier's terminal, it can be reweighed on a certified scale and remeasured for density. If the actual weight or class differs from what was declared, the carrier rerates the shipment and bills the difference. This is standard practice across LTL carriers, not a sign of a specific carrier acting in bad faith, but it is exactly why accurate numbers at booking matter: the closer your declared weight and class are to reality, the less room there is for a rerate to move the price.
In transit, accessorial services get logged by whoever handles the freight that day, a driver noting a liftgate use or a dock worker logging a redelivery attempt, separately from the system that eventually generates your invoice. Keep your own note of what you actually requested and what happened at delivery (a signed delivery receipt) so you have something to check the invoice against later.
6. Check the invoice against the quote when it arrives
The invoice typically lands weeks after the shipment moved, and it is assembled from several pieces: the booked rate, any terminal reweigh or reclass, accessorial charges, and the fuel surcharge. Compare it line by line against your original quote, the BOL, and the delivery receipt. A charge with paperwork behind it, a certified reweigh, a signed delivery receipt showing a service happened, is legitimate. A charge with nothing to back it up is a billing error.
If you find one, you have 180 days from the invoice date to dispute it under 49 U.S.C. Section 13710(a)(3)(B). Our step-by-step guide to auditing an LTL freight invoice covers that comparison and the dispute process in full.
How LanePilot handles booking
LanePilot is the LTL TMS for small shippers: you describe the shipment, compare rates across your connected carriers, and book on your own carrier account from one screen. LanePilot looks up the freight class from your shipment description, holds onto the quote and the declared weight and class as the record for that shipment, and audits the invoice against that record once it arrives, flagging any reweigh, reclass, accessorial, or rate mismatch automatically.
LanePilot does not contact, negotiate, or file claims with the carrier on your behalf. You book on your own carrier account and, if a dispute is warranted, you file the letter yourself; LanePilot prepares the documentation. See how LanePilot runs quoting, booking, and invoice audit in one system, or run a free audit on a recent shipment (send both the invoice and the original quote) to see what it catches.
Frequently Asked Questions
What information do I need to book an LTL shipment?
You need the origin and destination (with zip codes), the total weight, the dimensions of each handling unit, a description of the commodity, the correct NMFC freight class, any accessorial services required (liftgate, inside delivery, residential, limited access), and your pickup window.
What is freight class and why does it matter when booking?
Freight class is a standardized NMFC rating from 50 to 500 that carriers use to price a shipment, based mainly on density (weight divided by cubic volume). Booking with the wrong class is one of the most common reasons a final invoice comes in higher than the quote.
Can a carrier change my freight class or weight after pickup?
Yes. Carriers reweigh and re-inspect freight against what was declared on the bill of lading, and can rerate the shipment if the actual weight or density differs from what was booked. That is why getting your own measurements right before you book matters.
What should I do if my LTL invoice doesn't match my quote?
Compare the invoice line by line against your original quote, bill of lading, and delivery receipt. Any charge without paperwork behind it is a billing error you can dispute, and you have 180 days from the invoice date under 49 U.S.C. Section 13710(a)(3)(B) to do it.