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Lead Time

Lead time is the delay between starting a process, such as placing an order, and finishing it, such as receiving the goods.

What Is Lead Time?

Lead time is the elapsed time between the start of a process and its completion. In business and investing, the term most often describes the gap between placing an order with a supplier and receiving the goods. It is also used, less commonly, to describe how far a leading indicator tends to move ahead of the economic change it signals.

How Supplier Lead Time Works

A company that sells physical products must keep enough inventory on hand to meet customer demand while it waits for new stock to arrive. If lead time is long, the company generally needs to order earlier or hold more stock. Lead time often has several parts: processing the order, producing the goods, and shipping them. Each stage can be affected by raw material availability, factory capacity, and transportation delays.

Lead time feeds directly into the reorder point, which is the inventory level at which a new order should be placed. A common approach is to multiply expected daily demand by the lead time in days, then add a safety stock buffer to cover unexpected delays.

Reorder Point = (Average Daily Demand × Lead Time in Days) + Safety Stock

Why It Matters to Investors

Lead times can offer clues about a company's operations and the broader economy. Lengthening lead times across an industry may point to supply strain, while shortening lead times may suggest slower demand or improved logistics. Companies sometimes discuss these trends in earnings reports or management commentary, though lead times are rarely published as a standard metric. Investors often compare lead times with inventory turnover to judge how efficiently a business manages its stock.

Long lead times also tie up cash. Businesses with lengthy lead times may need more working capital, which can affect financial flexibility. Companies using just-in-time inventory, which keeps stock levels low, depend especially on reliable lead times.

Limitations

Lead times are estimates and often vary from one order to the next. An average figure can hide occasional long delays that disrupt production. Because lead time is only one input among many, it is usually read alongside other operating data rather than on its own.

Updated October 20, 2026. For general education only; not financial, tax or legal advice.

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Related Terms

Leading Indicator

A leading indicator is an economic or market measure that tends to change before the broader economy or a security's price moves, offering a possible early signal of future direction.

Inventory

Inventory is the goods a business holds for sale to customers or for use in producing those goods, recorded as a current asset on its balance sheet.

Inventory Turnover

Inventory turnover measures how many times a company sells and replaces its inventory over a period, indicating how efficiently it converts stock into sales.

Working Capital (NWC)

Working capital is a company's current assets minus its current liabilities, a measure of the short-term resources available to cover its near-term obligations.

Supply Chain

A supply chain is the network of companies, people, activities, information and resources involved in producing a product or service and delivering it to the end customer.