How to bill detention and actually get paid

Detention is the most litigated sentence in a broker-carrier contract and the least regulated thing in transportation. There is no federal rule that makes a shipper pay you for sitting at their dock. There is only the paper that says what the wait was worth, the paper that proves how long you waited, and the persistence of the person holding both. That is the whole game, which is why the carriers who get paid are not the ones who argue best on the phone — they are the ones whose paperwork makes the argument before anyone picks up.

Start with the terms, before the wheels turn

Everything about a detention claim is decided by three numbers in the rate confirmation or the broker contract, and you should be able to recite them for the load you are hauling right now:

• Free time. Usually two hours, sometimes one, measured from arrival or from the appointment window. Whichever it is, it is where your claim starts — not from zero.
• The rate. Per hour or per half hour, and the difference between "per hour, after the first two" and "in hours or parts thereof" is real money across a year.
• The notice and proof condition. The nastiest clause in the document: many confirmations require detention to be notified in advance and documented at the facility, sometimes on the facility's own paperwork. A claim that ignores its own contract's condition is a claim that will be denied on a technicality, correctly.

If the confirmation says nothing, that silence is a decision you have to make early. Invoice the wait anyway, say the terms were not stated, and expect a negotiation — but have that conversation on the day the truck was released, not five weeks later when the invoice is already an argument.

The clock is four timestamps

A detention claim that rests on "I was there about six hours" is worth nothing, and a claim that rests on four dated, independent timestamps is very hard to wave away.

Timestamp	Best source	Why it survives an argument
Arrival	Gate or yard scan, check-in at the window, then the log	It is the other side's own record of when you appeared
Detention start	Whatever the confirmation says it is — arrival, or the end of free time	It is the number your arithmetic is built on, quoted from their document
Release	Signed delivery paperwork with the departure time written on it	They hold a copy; the picture on your phone is not the only evidence any more
Departure	ELD or logs	49 CFR part 395 already forces you to keep it for months; that record is admissible in an argument about money as well as an argument about hours

Get the delivery paperwork photographed at the window, with times legible, and ask for the copy to be initialed. Two minutes at a drop lot is the cheapest insurance in the business.

Write it in the order the argument is won

One page, four parts, in this order. This is the shape the demo workspace's letter is built in, and it is the shape that survives being forwarded from a dispatcher to a payables clerk who has never heard of the load.

1. What was agreed. Quote the confirmation back at them: free time, rate, and the clause you are claiming under. Their document, not your memory.
2. What happened. The four timestamps, plainly, with the source of each named.
3. What it comes to. Hours waited, free hours subtracted in the line itself, rate multiplied by the remainder. Make the arithmetic so obvious that checking it is faster than arguing with it.
4. Where the money goes. The invoice number or load reference the amount is to be applied against, and the date you expect an answer.

Send it as a claim, not as a quiet line item

Two routes work. The first is an accessorials line on the freight invoice; it is frictionless until the day the broker's system strips it as an unauthorised charge and you discover the deduction three weeks later, when the load is a memory and the POD is in a box. The second is a dated claim letter referencing the invoice, which forces a reply and creates a record of the reply.

Do not "adjust" the freight bill by adding detention to the linehaul and hoping nobody notices. They will notice, they will treat it as a rate change made in bad faith, and you will spend the leverage you had on the next load defending the one you lost.

The one rule that does set a clock — and what it does not cover

Carriers often hear that a claim must be paid within 120 days. That is real, and it is narrower than it sounds: 49 CFR part 370 governs how motor carriers investigate and dispose of loss and damage claims — acknowledge a proper claim within 30 days, and pay, decline or offer a compromise within 120. It is worth knowing for the day a pallet of damaged goods shows up on your broker packet. It does not apply to your detention invoice, and the practical consequence is the important part: nothing puts a deadline in front of the person who owes you for detention except the deadline you write into your own letter.

Aging, and the reason detention is not a separate problem

Detention rarely dies of a refusal. It dies of aging: it goes out unbilled on the day it should have, gets invoiced two weeks later, joins an invoice that is already thirty days old, and turns into an argument about a load nobody remembers, at the exact moment the broker is pressuring you to take the next one. The claim and the receivable are the same problem, which is why the demo truck keeps a detention event and a forty-one-day invoice on the same screen.

Then there is the part nobody puts in the contract. If the same receiver sits your truck four hours a visit and the same broker strips every accessorial, the profitable decision is often the load you do not take. Detention gets paid in this industry when asking for it costs the person being asked something.