On-Time Delivery Rate
Definition
On-Time Delivery Rate
On-time delivery rate is the share of orders, tickets, or milestones that arrive by the date promised. It is the plainest test of whether a provider keeps its word, and buyers reach for it long before they look at any other measure.
The appeal is that nobody has to interpret it. Either the thing landed by the committed date or it did not.
That simplicity is also the trap. A provider who quotes generous dates will beat one who quotes honest dates — every single time.
So the rate only means something next to the promise behind it. Read the two together or you are rewarding sandbagging.
Key takeaways
- On-time delivery rate divides deliveries made by the committed date into total deliveries.
- The promised date is set by the provider, so a high rate can reflect soft commitments.
- Partial deliveries need a written rule before the first month is measured.
- Regulators treat shipping promises as enforceable claims, not marketing language.
How it works
Count every delivery due in a period, count how many arrived on or before the committed date, then divide the second number by the first. Multiply by 100 and you have the rate for that window.
The hard part is agreeing what “delivered” and “committed” mean. Four definitions have to be fixed before the first measurement.
| Decision | Common options | Why it matters |
|---|---|---|
| Clock stop | Dispatch, arrival, or customer acceptance | Acceptance adds days outside provider control |
| Commitment used | Original date or latest revised date | Revised dates can lift the rate artificially |
| Partial delivery | Counted whole, pro rata, or as a miss | Decides how split shipments score |
| Grace window | Zero days, same day, or 24 hours | A one-day grace can add several points |
Commitments are not purely a commercial matter. Under the Federal Trade Commission’s Mail, Internet, or Telephone Order Rule, a seller with no stated shipping time must have a reasonable basis for believing it can ship within 30 days.
If that window slips, the seller has to seek the customer’s consent to the delay. The rate is a business measure with a legal floor sitting underneath it.
Examples
Delivery promises look different across freight, back-office work, and software delivery, but the arithmetic holds. Four cases show where the definitions do the real work of setting the score.
A freight partner. The EPA SmartWay programme covers more than 4,000 shipper and carrier partners, whose collaboration has saved $55.4 billion in fuel costs over 20 years. Route efficiency and on-time arrival move together.
A claims processing team. Every file carries a 48-hour turnaround commitment. Measuring from receipt rather than from allocation shifts the rate by nine points — because queue time was previously invisible.
An offshore development pod. Sprint commitments are the delivery unit, and carry-over stories count as misses. The rate dropped from 94% to 71% once partial completion stopped counting as done.
A payroll bureau. Pay runs must land before a statutory deadline, so the target is 100% and any miss triggers a review — there is no tolerance band worth negotiating on a date the law already fixes.
Related terms
On-time delivery rate is one of several measures buyers use to judge whether a provider performs as contracted. The terms below cover the commitments, the roles, and the comparison methods around it.
- Service Level Agreement (SLA): the document where the delivery commitment is written down.
- Order Processing: the workflow the delivery clock most often measures.
- Logistics Coordinator: the role that chases slipping shipments.
- Delivery Manager: the owner of the commitment on the provider side.
- Vendor: the party the rate is usually applied to.
- Benchmarking: the comparison method behind any competitive claim.
- Key Performance Indicator (KPI): the reporting category the rate belongs to.
FAQ
What is a good on-time delivery rate?
Most commercial contracts target 95% or better, and regulated work such as payroll or tax filing targets 100%. The right number depends on how much slack the promised date already contains.
Does a revised delivery date count as on time?
Only if the contract says so. Measuring against revised dates rather than original commitments is the most common way a poor rate is made to look healthy.
How should partial deliveries be counted?
Pick one rule and write it into the agreement before measurement starts. Counting a part shipment as a full success is the usual source of disputes.
Who sets the promised date?
Usually the provider, which is why buyers should review how dates are quoted. A rate above 99% with long lead times often signals padding rather than speed.
Is on-time delivery rate the same as fill rate?
No. Fill rate measures whether the full quantity was supplied, while this rate measures whether it arrived by the agreed date.
How often should the rate be reviewed?
Monthly for steady volumes and weekly during a transition. Frequent review catches drift before a quarterly report locks it in.
Find delivery partners with published performance records in the Outsource Accelerator directory.
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