What is a backorder?

‍A backorder occurs when a customer places an order for a product that is currently out of stock or unavailable for immediate delivery, typically because demand has outpaced available supply. Rather than blocking the purchase entirely, retailers can accept the order and commit to fulfilling it once the item is restocked.

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Backorder vs. Out-of-stock‍

These two are often confused, but they're not the same thing. "Out-of-stock" simply means the item isn't available right now: the customer usually can't buy it at all. A backorder goes a step further: the retailer still accepts the order, commits to a (usually estimated) delivery date, and fulfills it once new stock arrives. In practice, backorders only work if the retailer's inventory management can reliably confirm when replenishment will actually happen. Otherwise the promise is just a guess.‍

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Why retailers use backorders‍

Without a backorder option, retailers simply lose the sale when a popular item runs out. Offering a backorder instead keeps the transaction alive and gives the retailer a second data point: a backorder is also a direct signal of demand that exceeded planning, which can inform future purchasing and inventory decisions.

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What effective backorder handling requires

• Clear, prominent display of backorder status on the product page and at checkout, so customers decide with full information before purchasing
• A realistic estimated availability date, not always the manufacturer's default lead time, which is often optimistic
• Proactive status updates once the order is placed, not just a one-time notice at checkout
• Fast order fulfillment the moment new stock arrives, so the backorder promise doesn't slip further

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Backorders across online and offline retail‍

Backorders aren't limited to eCommerce. Physical retail deals with the same challenge whenever a product is unavailable in-store. Both channels depend on accurate, real-time visibility into incoming stock; without it, retailers either overpromise delivery dates or leave customers without any estimate at all, which is often worse than a longer but honest wait time.‍

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Communication as the deciding factor‍

The single biggest factor in whether a backorder experience feels acceptable or frustrating to the customer is communication. Retailers who send timely, proactive updates on order status — rather than leaving customers to check manually — see meaningfully better outcomes for customer trust and repeat purchases than those who don't.

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