Every carrier you use can tell you how well it performed last month, and every one of them will tell you it did well. That is less dishonesty than arithmetic. A carrier measures itself against its own service promise, on its own scan data, using its own definition of what counts as an exception. Ask three carriers for a performance report and you will get three numbers that cannot be added together.
If you ship across multiple carriers, as most Australian businesses moving real volume do, the number you actually need is one you calculate yourself. It is called DIFOT, and it is the least glamorous and most useful metric in freight.
What DIFOT Actually Measures
DIFOT stands for Delivered In Full, On Time. It is the percentage of orders that arrived complete and arrived when they were promised. Both conditions have to hold. An order that turns up on the right day missing two cartons fails. An order that turns up complete but two days late fails. There is no partial credit, which is the point, because your customer does not offer partial credit either.
The arithmetic is simple. Take the number of orders delivered in full and on time, divide by the total number of orders, and multiply by one hundred. As an illustration, a month of 400 dispatched orders in which 368 arrived complete and on schedule gives a DIFOT of 92 per cent. The maths is never the hard part. The hard part is agreeing what "on time" means and getting consistent data out of carriers who each define it differently.
The Three Definitions to Settle First
Before the number means anything, settle three things and write them down.
Which clock are you measuring against? A carrier's own estimated delivery date can move. If you measure against a date the carrier is free to revise, you are measuring the carrier against itself, and it will almost always pass. Measure instead against the date you promised your customer, or against the transit time in your rate card for that lane and service. That is the commitment with commercial consequences.
What counts as in full? A short delivery is obvious. A damaged carton is less so. Decide whether damage counts as a failure and then be consistent about it. Most shippers count it, on the reasoning that a customer holding a broken product has not received their order.
Which orders are in scope? Orders cancelled by the customer, orders held at your own warehouse, and orders the customer asked to have delivered later are not carrier failures. Exclude them, define the exclusion once, and do not let the exclusion list grow every time the number looks bad.
Why the Carrier's Own Report Will Not Give You This
A carrier's performance report is built from its own scan events, measured against its own service standard, with its own exception codes. Weather, address problems, customer-not-home and depot congestion are commonly recorded as excluded events rather than failures. Every one of those may be a fair exclusion from the carrier's point of view. None of them is a fair exclusion from your customer's point of view, because the delivery was still late.
There is also a structural problem no single carrier can solve for you. Run four carriers and you have four reports on four definitions, with no way to answer which carrier is genuinely better on the Melbourne to Brisbane lane for a pallet. The comparison you need sits across carriers, and no carrier is going to build it.
Building the Number From Data You Already Hold
Calculating DIFOT does not require new instrumentation. It requires three fields you almost certainly already have: the date you promised, the date the consignment was actually delivered, and whether it arrived complete. The first comes from your order system, the second from carrier tracking events, and the third from your customer service records or a proof-of-delivery exception.
The obstacle is rarely whether the data exists. It is that the data lives in four carrier portals, in four formats, under four different names for what is essentially the same delivery scan. Consolidating tracking across every carrier into one place is the real work, and it is the same work that makes a DIFOT number possible at all.
That consolidation is one of the things a managed freight platform exists to do. Senditt is a managed freight platform (4PL) for high-volume Australian business shippers: it books on Senditt's negotiated rates across 35+ carriers, and lets you track and reconcile every consignment from one dashboard. Every consignment is tracked across all carriers in one place, which is the consolidated event history a DIFOT calculation runs on.
What to Do With the Number
A single DIFOT figure for the whole business is a headline, not a tool. Break it down and it starts earning its keep.
By carrier. The obvious cut, and the one that changes allocation decisions. A carrier two per cent cheaper and six points worse on DIFOT is not cheaper.
By lane. Carriers are rarely uniformly good. Most are strong where their own network is dense and weaker where they hand off to a partner. Lane-level DIFOT is where those handoffs become visible.
By service level. If your express service and your standard service return the same DIFOT, you are paying for express and not receiving it.
By failure mode. Separate late from short. They have different causes and different owners. Late is usually the carrier. Short is usually your own pick and pack, which means part of your DIFOT problem was never a freight problem.
The Conversation It Changes
The practical value of a DIFOT figure you calculated yourself is what it does to the next rate review. Without it, the conversation is about price, because price is the only thing both sides can see. With it, the conversation is about the specific lanes where a carrier is underperforming its own promise, with dates and consignment numbers attached.
That is a different negotiation. Carriers respond to it, because it is a claim they can check rather than a complaint they can absorb.
If you are running several carriers and cannot produce one honest DIFOT figure across all of them, the problem is consolidation rather than measurement. Book a freight review and we will show you what one tracking view across every carrier looks like.
Senditt is a managed freight platform (4PL). Senditt is not Sendle and is not affiliated with it.