On-time in full (OTIF)
On-time in full (OTIF) measures the share of orders (or order lines) delivered both on the agreed date and in the complete quantity ordered. A delivery counts only if it passes both tests: arriving on time but short fails, and arriving complete but late fails. OTIF is calculated as the number of orders delivered on time and in full divided by total orders, expressed as a percentage.
Examples
Computing the number: 1,250 order lines ship in May. 1,118 arrive on the agreed day, but 37 of those are short-shipped, leaving 1,081 lines on time and in full: 1,081 ÷ 1,250 = 86.5% OTIF, even though on-time alone reads a flattering 89.4%.
The re-promise trap: A connector supplier scores itself at 96% against latest confirmed dates. Scored against original purchase order promises, after lead times stretched mid-year, the same shipments come out at 78%. Both numbers are honest math; only one reflects the buyer's planning reality.
Order level versus line level: A 40-line order arrives with one line missing. Order-level OTIF: 0%. Line-level OTIF: 97.5%. Supplier and customer were both right until the contract defined the basis.
Definition
OTIF exists because the component metrics flatter. A supplier can post 95% on-time and 95% fill rate while only 90% of orders arrive both complete and on the promised date, and the customer experiences the 90%. Combining the two into one KPI measures what the receiving dock actually feels.
Most OTIF disputes are really measurement disputes. Whose date counts: the customer's requested date, the supplier's original promise, or the latest re-promise (scoring against re-promises lets a supplier slip three times and still post 98%)? What window counts as on time: the exact day or a two-day window? And at what level: one short line can fail a 40-line order at order level while line-level scoring shows 97.5%. Pin all three down in the service level agreement before the number means anything. Large retailers run OTIF compliance programs that fine suppliers a percentage of invoice value for misses, which is how the metric escaped the warehouse and reached CFOs.
For manufacturers, supplier OTIF belongs on the supplier performance scorecard and in a regular rhythm of supplier performance management, reviewed against original commitments. LightSource tracks promised versus actual delivery at the purchase order line level, so the OTIF a buyer quotes back to a supplier reflects the original promise rather than the latest re-promise.
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