How to manage backorders without losing the customer

A backorder occurs when a customer purchases an item where the physical unit cannot ship until a later date. Think: The product sold out, is still being designed or manufactured, or in some cases, may even be a vague concept. A backorder lets a business leader get cash which is often used for manufacturing or gauge customer demand, so they know how many products to make (and what colors/form factors sell best). It also occurs when a product's orders are higher than demand, so the product runs out of stock.

The question I always start from when evaluating a backorder challenge is “what was promised to the customer?” This tells me whether the team saw the backorder early enough and level-set with customers. If the answer is yes, the customer knows the product will ship on X date in the future, then skip to the operational steps below. If not, read on.

If you made a delivery promise to a customer that you can't keep, correct it fast. Not via a generic e-mail or an automated delivery update, get personal. This is critical because your customer is ultimately the reason you are in business and in this instance, you let them down. Don't offer a standard policy here, listen to the customer and then document what they need (& do it). If it's a high ticket item, offer an additional gift card or incentive as an apology. This is not the time to be frugal, finance leaders.

1. A refund because the product won't arrive on time? Done (original payback method, not some gift card that makes them loyal after you've messed up).
2. Comfortable waiting for the order? Great. Confirm with them when it will ship and then follow up with them when it does.
3. A change in delivery address? Not a problem.

First, decide whether to accept the backorder at all

Not every out-of-stock item should stay buyable. Before you turn on backorders for a SKU, you need three things to be true.

• You have a real supply date. Not a maybe; a confirmed ship date from your supplier or freight forwarder, with the transit time added.
• The gap is short enough. My rule of thumb: under two weeks, backorder freely; two to six weeks, backorder with a deposit or a clear opt-in; beyond six weeks, switch to a waitlist instead of taking money.
• The margin survives the fix. A backorder usually costs you something later either via expedited freight costs, a split shipment, a discount code to maintain a happy customer. If the item cannot absorb that, do not sell it.

Backorder vs. preorder vs. waitlist

These get used interchangeably and they are definitely not the same thing. Keep them separate, because the customer expectation is different for each.

• Preorder: a product that has never shipped. Excitement is high, patience is high, and a launch date is expected. Think: Taylor Swift album release.
• Backorder: a product that normally ships fast and currently does not. Patience is low, because the customer expected the normal experience. Think: Your favorite shade of lipstick from your favorite brand.
• Waitlist: no money taken, no promise made. This is your escape hatch when the supply date is not confirmed.

Set the date you can actually beat

The single biggest lever is the date you publish. Take your supplier ship date, add transit, add receiving time at your warehouse (this is the step everyone forgets; a pallet on your dock is not sellable inventory), then add a buffer. Publish that number.

Say it three times: at checkout, at confirmation, and mid-wait

Most backorder anger is not about the wait; it is about the lack of clarity. Three touchpoints cover almost all of it.

• On the product page and at checkout: the ship-by date in plain language, before the card is charged. "Ships by October 14" beats "ships in 3-4 weeks," because a date is checkable.
• In the order confirmation: repeat the date, and state clearly what happens if it slips (you will email, and they can cancel for a full refund at any point before it ships).
• Halfway through the wait: an unprompted update, even if the update is "still on track." This one email is the highest-ROI thing in the whole playbook, and almost nobody sends it.

When the date slips (and it will)

Tell them the day you know, not the day it slips. Give the new date, the reason in one sentence, and a choice: wait, swap for something in stock, or cancel for a full refund. Do not bury the cancel option; the customers who would have charged back anyway will just cancel instead, and the ones who stay actually chose to stay.

Protect the rest of the catalog

One backordered SKU can negatively impact your whole store; ads keep spending on a product that cannot ship, and the delayed order drags its in-stock line items with it.

• Pause paid traffic pointed at the backordered SKU or reroute it to the in-stock variant.
• Split shipments by default when an order mixes in-stock and backordered items; better to pay two shipping costs than a return.
• Cap the quantity per customer so resellers do not absorb the whole incoming shipment. Reseller arbitrage is real and very few people bake this into their plans.
• Reserve incoming units against existing backorders before you make the SKU buyable again. Selling the same units twice is the classic failure mode.

Charge now or charge on ship?

Charging at order helps cash flow and locks in intent; authorizing and capturing on ship reduces refunds, chargebacks, and complaints, but authorizations expire (often around seven days) so it only works for short waits. For anything longer than a couple of weeks, charge at order and be aggressively generous with cancellations. And check your payment processor's rules; some require shipment within a set window of the charge.

The five numbers to watch

• Backorder conversion rate: how many people still buy when the item shows a future date. Below about 20% of the in-stock rate, your date is too vague or too far.
• Cancellation rate during the wait: your patience meter. A spike after an update email means the update was written poorly.
• Promise accuracy: percent of backorders shipped by the published date. Target 95% or higher; this is the only number that compounds into trust.
• Support tickets per backordered order: if it is above roughly 0.2, your communication is doing less work than your inbox.
• Repeat purchase rate for backorder customers: the real verdict. Handled well, this can beat your baseline; people remember being treated straight.

Then fix the upstream cause

Backorders are a symptom. Once the fire is out, go find whether it was a forecast miss, a lead-time change your supplier never told you about, a reorder point that was set when your volume was half what it is now, or a single-source supplier with no backup. Recalculate your reorder point with the current lead time and current velocity, not the numbers from the day you set it up. Most repeat backorders I have seen were one stale assumption in a spreadsheet.

I write more of these on Substack; supply chain, e-commerce operations, and the AI tools I use to run all of it.