What are accessorial charges?

Accessorial charges are fees for services beyond the basic transport of freight from origin to destination. Common examples include detention and demurrage for time held beyond the free window, liftgate and inside delivery for equipment or labour at the door, residential delivery, redelivery after a failed attempt, storage, reweigh or reclassification corrections, and administrative fees for changes to the booking.

What is the difference between detention and demurrage?

Demurrage is charged for cargo or equipment sitting beyond its free time at a terminal or port. Detention is charged for holding equipment or a vehicle beyond the agreed free period once it has left, such as a truck waiting at your dock or a container held at your yard. The distinction matters when you dispute, because the two are measured by different parties from different clocks.

Which accessorial charges are most often billed in error?

The recurring ones we see are detention billed from arrival times you cannot verify, reweigh corrections applied without a weight certificate, residential surcharges on addresses that are commercial, and redelivery charges for attempts that were never made. All four share a trait, which is that the evidence sits with the carrier by default.

How do we reduce accessorial charges?

Start by measuring which ones you actually pay, by code and by carrier, over three months. Most businesses find the spend concentrates in two or three codes at one or two sites, which turns a vague cost problem into a specific operational fix such as faster loading, corrected address classification, or a booking process that stops generating changes.

Where accessorial fees hide on a freight invoice

Accessorial charges are the fees for everything that is not moving the freight: waiting, handling, storage, redelivery, correction. They are also where freight billing errors concentrate, for one structural reason. Almost every accessorial describes an event that happened at a place you were not standing, measured by a clock you do not hold, recorded by the party sending you the bill.

That is not an accusation of bad faith. It is a description of an evidence problem, and evidence problems are fixable.

What counts as an accessorial charge?

Anything the carrier does beyond picking up, carrying and delivering. The list varies by carrier and mode, but the codes that show up on most invoices fall into five groups:

Time. Detention, demurrage, waiting time, layover, driver detention after free time expires.
Access. Liftgate, inside delivery, residential delivery, limited access location, restricted delivery hours.
Correction. Reweigh, reclassification, dimensional adjustment, address correction, bill of lading correction.
Failed movement. Redelivery, reconsignment, return to origin, storage after a missed appointment.
Administrative. Booking amendment, documentation fee, customs entry amendment, cash on delivery handling.

Industry write-ups commonly estimate that accessorials add somewhere between 8% and 15% to a freight invoice, with the share rising for shipments that touch residential addresses or constrained sites. Treat that as an order of magnitude rather than a benchmark. The number that matters is what your own codes add up to.

Why do accessorials hide so well?

Three reasons, and they compound.

They arrive after the decision. The rate is negotiated in advance and scrutinised. The accessorials appear weeks later on an invoice, long after anyone remembers what happened on that delivery. By then the reference point is gone.

They are individually small. A liftgate fee or an address correction is rarely worth an argument on its own. The same code appearing 400 times a quarter is worth a great deal, but nothing on a single invoice tells you it is happening 400 times.

Their evidence is asymmetric. This is the important one. When a carrier bills two hours of detention, the arrival and departure times come from the carrier’s own record. When a carrier bills a reweigh, the corrected weight comes from the carrier’s dimensioner. You are being asked to accept a measurement and a bill from the same source, which is exactly the arrangement regulators tend to take an interest in. In US rail, demurrage and accessorial charges sit under Surface Transportation Board oversight, governed by statutes that require railroads to set reasonable rates and to compute demurrage in a way that serves national needs, with Class I railroads reporting demurrage and accessorial revenue quarterly. Most modes have no such reporting.

The three to check first

If you only ever check three codes, check these.

Detention

Typically billed by the hour once free time expires, with US road freight rates commonly quoted in the range of 50 to 100 US dollars per hour. The dispute is almost never about the rate. It is about the clock.

The fix is unglamorous and it works: record your own gate in and gate out times for every collection and delivery, with a timestamp nobody edits afterwards. Most warehouse systems already capture this and nobody exports it. Once you have your own times, a detention dispute stops being your word against theirs and becomes a two-line comparison.

Demurrage

Charged when a container sits at a terminal beyond its free time, typically a window of four to seven days depending on port and carrier. The trap is that the free-time clock and your operational clock measure different things. Free time usually starts on discharge or availability, not on the date somebody told you the box was ready to collect.

Pull the terminal’s own availability timestamps rather than working from the carrier’s advisory email. Where a port holiday or a customs hold sits inside the free-time window, that is a documented, disputable cause and it is worth raising every time.

Reweigh and reclassification

A corrected weight or freight class changes the rate for the whole shipment, so a single reweigh can be worth more than a dozen liftgate fees. Ask for the weight certificate or the dimensioner output. If a carrier cannot produce one, the correction is an assertion.

The pattern check matters more than any single case. If one carrier’s reweighs move in their favour 90% of the time while another’s split evenly, you have found something a spot check never would.

How do you find the pattern without checking every invoice?

You count by code, by carrier and by site, over a quarter. That is it. Almost every business that does this for the first time finds the same shape: two or three codes account for most of the accessorial spend, and they concentrate at one or two locations or with one carrier.

The reason nobody does it is that the codes live inside PDF invoices, one line at a time, and nobody is going to key three months of them into a spreadsheet. That is the actual blocker, and it is a document problem rather than a logistics problem. Once the lines are extracted and matched to shipments, counting them by code is trivial, which is the same pipeline used to check a freight invoice before you pay it. The matching method behind it, and why confidence scoring matters more than extraction, is in what 97% reconciliation accuracy really takes.

What to do this quarter

Pick one carrier and three months of invoices. Extract every accessorial line, group by code, and rank by total spend. Then ask, for the top two codes only, what record you would need to dispute them and whether you currently keep it.

That question usually changes an operational habit rather than a contract, and the habit is cheaper. For most of the businesses we work with, the outcome is not a refund claim. It is that six months later the charge stops appearing.

If the counting itself is the blocker, our free 30-minute ROI diagnostic looks at your invoice volume and formats and tells you whether extraction is worth automating at your scale. Forwarders can also see how we scope this work on our freight forwarding solutions page.