On-time delivery

On-time delivery is a performance metric that measures whether products, materials, or services are delivered to the customer or next process by the date and time that were committed. In industrial and manufacturing environments, it typically tracks shipments to external customers, but it can also be applied to internal deliveries such as work-in-process handoffs, kitting, or delivery of materials to a production line.

What on-time delivery includes

In most manufacturing and supply chain contexts, on-time delivery:

• Compares the promised delivery date and time (from a sales order, schedule, or service level agreement) to the actual delivery timestamp.
• Is reported as a percentage of orders, lines, or units that arrive on or before the promised time.
• May be calculated at different levels, such as per customer, per plant, per product family, or per carrier.
• Usually assumes that the correct quantity is delivered; some organizations also require correct documentation and labeling to count as on time.

The metric is often used alongside throughput, schedule adherence, and capacity utilization to understand how well operations are meeting demand and honoring commitments.

Operational use in manufacturing systems

On-time delivery in regulated or complex manufacturing environments is typically supported by multiple systems:

• ERP and planning systems store requested and committed dates, generate delivery promises, and record shipment dates.
• MES and shop-floor systems track actual production completion times that feed delivery performance reporting.
• Logistics and warehouse systems provide shipping confirmation timestamps and carrier information.
• Business intelligence or operations-intelligence tools calculate on-time delivery KPIs and trend them over time.

Because definitions can vary, organizations commonly govern the exact calculation rules, for example whether early deliveries count as on time, whether partial shipments are included, and what time zone or cutoff time applies to the promised date.

Typical calculation approaches

Common calculation variants include:

• Order-based: number of customer orders delivered on or before the promised date divided by total orders shipped in the period.
• Line-based: percentage of order lines shipped on or before the committed date.
• Quantity-based: percentage of total units or pieces delivered on time versus total units delivered.

In regulated environments, organizations often standardize which variant is used and document data sources and time-stamp definitions to keep reporting consistent across sites.

Common confusion

• On-time delivery vs. throughput: Throughput focuses on how much is produced or shipped over time, while on-time delivery focuses on when deliveries occur relative to commitments.
• On-time delivery vs. schedule adherence: Schedule adherence measures how closely production follows the planned schedule. On-time delivery measures whether the final delivery meets the promised date to the customer or downstream process.
• On-time shipment vs. on-time delivery: Some organizations measure shipment leaving the site; others measure arrival at the customer or receiving location. This distinction should be made explicit in the definition.

Link to KPI discussions

On-time delivery commonly appears as one of the core operational KPIs alongside metrics such as OEE, first-pass yield, and cost-related indicators. In these contexts, it serves as a customer-facing or service-level view of how well manufacturing, planning, and logistics are operating together to meet committed dates.