What a rate is made of
Rate per mile is a trap
Rate per mile is the price divided by the miles. The arithmetic is simple. The comparison is useful only if the two numbers describe comparable work.
Why it can mislead
A carrier spends time reaching the pickup, loading, waiting and handling paperwork as well as driving the loaded miles. Some of that work is required on both short and long trips. Spreading it across fewer miles can raise the rate per mile on a short lane.
That does not prove a short-lane quote is fair, or make a long-lane quote a bargain. It explains why a network average is a poor substitute for checking the actual shipment.
Other differences matter too:
- Direction. Where the load leaves the truck, and what suitable freight is available next, can affect the carrier's price.
- Equipment and service. Refrigeration, securement, tarping, team service and extra stops can change the work being priced.
- Timing. Season, pickup notice and appointment requirements can change capacity and price on the same route.
- Which miles. Different routing and mileage systems can produce different distances. Use a consistent basis.
- Which rate. A shipper's quote is not the same as the broker's payment to the carrier. Spot and contract benchmarks also describe different transactions.
What to compare alongside it
The same lane over time
Your Portland-to-Reno shipment last month is a useful starting point for this month's quote if the equipment, freight and service requirements match. Record changes in fuel, timing, market conditions and accessorials before deciding that the increase is unexplained.
A benchmark can help too. Check its geography, date range, equipment, rate type and fuel treatment. An average is context, not a promise that a suitable truck is available at that price.
Cost per unit delivered
Cost per pallet, case or pound connects the shipment bill to the amount of product delivered. A higher total rate may work out cheaper per unit if a suitable option carries more product. Keep the equipment limits and service requirements in that comparison.
The cost of the service you received
Track freight charges alongside documented damage, delays, recovery work and your team's time. Keep actual costs separate from estimates and do not count the same loss twice. A low quote may lose its advantage once those costs are included.
A fair use for rate per mile
Compare quotes for the same shipment, or investigate changes on comparable lanes, using the same mileage basis and included charges. Rate per mile is one measure; it does not describe service quality or explain a price on its own.
The question to ask
“This lane has been running at a lower cost for us. The equipment and service requirements are the same. What changed in today's quote?”
Look for an explanation you can check: fuel treatment, capacity, appointment requirements, mileage or an added service. If a benchmark is part of the discussion, confirm that you and the provider are using the same kind of rate.
For a concrete example of these distinctions, DAT explains its spot and contract rate data, and its RateView FAQ explains fuel and mileage treatment.
Questions welcome
Questions about this lesson are welcome at joseph@thesupportedshipper.com. The education is free. A review of your own lanes, invoices or operations is scoped separately before work begins.