Backorders Explained: 5 Causes and How to Manage Stockouts


Written by 
Dee Set Staff
 on 
24 August, 2026

Ever clicked ‘buy now’ only to be told you’ve got to wait several months for your item to ship? That, right there, is a backorder in action. Not quite out of stock, not quite available, but somewhere in the middle, causing just enough confusion to keep customer service teams busy.

Managing stock fluctuations is a core part of modern retail logistics. If you’re looking to streamline your supply chain or explore dedicated retail fulfilment services, understanding how stockouts impact your bottom line is the first step.

And if you’ve been wondering what a backorder is, you’re in the right place. Let’s break it down, without the jargon.

What is a backorder?

A backorder happens when a product is temporarily out of stock but still available to purchase. Instead of stopping sales altogether, the retailer allows customers to place orders with the understanding that the item will be shipped later, once inventory is replenished.

This is different from a product being completely unavailable. With a backorder, there’s an expectation that stock is already on its way or will be produced shortly.

How do backorders work in retail and ecommerce?

Here’s how it typically works:

  • A customer places an order for an out-of-stock item
  • The order is recorded and held in the system
  • The business waits for new inventory to arrive
  • Once stock is available, the order is fulfilled and shipped

It sounds straightforward, but behind the scenes, it relies massively on accurate forecasting, supplier coordination, and tight inventory control. If any of those slip, delays start to stack up quickly.

Why do backorders happen?

Backorders aren’t random. They usually point to something happening within the supply chain or demand patterns.

The most common causes are:

1. Unexpected spikes in demand

Sometimes products just take off. A viral moment, seasonal surge, or successful promotion can drive demand far beyond forecasts.

While that’s great for sales, it can quickly drain stock levels. If replenishment can’t keep up, backorders follow.

2. Inaccurate forecasting

Forecasting demand is part science, part educated guess. If predictions are off, even slightly, businesses can end up understocked.

This is especially common with:

  • New product launches
  • Trend-driven items
  • Rapidly scaling ecommerce brands

3. Supply chain disruptions

Delays from suppliers, shipping issues, or manufacturing hold-ups can all slow down stock replenishment.

Common culprits include:

  • Port congestion
  • Raw material shortages
  • Production delays
  • Transport disruptions

Even a small delay can ripple through the entire supply chain.

4. Inventory management issues

Sometimes, the stock should be there… but isn’t.

Poor inventory visibility, system errors, or miscounts can create ‘phantom stock’, where systems show availability but shelves are empty.

When reality catches up, backorders appear.

5. Seasonal demand fluctuations

Retail loves a peak season. Warehouses… not always so much. Events like Black Friday, Christmas, or summer sales can put huge pressure on stock levels. If inventory planning doesn’t fully account for these spikes, backorders are pretty much inevitable.

Are backorders a bad thing?

Not always. In fact, backorders can be both good and bad for a business, depending on how they’re managed.

The upside

Allowing backorders means you don’t have to lose a sale just because stock isn’t immediately available.

Benefits include:

  • Capturing demand instead of turning customers away
  • Maintaining revenue during stock gaps
  • Keeping popular products visible and sellable

For high-demand items, backorders can even signal popularity and drive further interest.

The downside

Of course, there’s a flip side.

If backorders aren’t handled well, they can lead to:

  • Longer delivery times
  • Customer frustration
  • Increased cancellations
  • Pressure on customer support teams

Customers are generally happy to wait, as long as expectations are clear. When it’s not clear from the get-go that the item won’t be shipped straight away, that’s when problems start.

How backorders impact your operations

Backorders don’t just affect customers. They can create ripple effects across your entire operation.

1. Fulfilment complexity

Managing backorders adds an extra layer to order processing. Teams need to track pending orders, prioritise shipments, and ensure nothing slips through the cracks once stock arrives.

2. Warehouse pressure

When new stock lands, there’s often a rush to clear backlogged orders. That can put pressure on picking and packing teams, making flexible third-party warehousing solutions critical during peak trading periods.

3. Customer communication

Clear communication is essential. Customers need to know:

  • Expected delivery timelines
  • Any changes or delays
  • When their order has been dispatched

Trust can quickly erode without this.

4. Data accuracy

Backorders highlight the importance of accurate, real-time inventory data. Without it, businesses risk overselling or underestimating demand.

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5 actionable ways to effectively manage backorders

You might not be able to eliminate backorders entirely, but you can definitely reduce how often they happen and how disruptive they are.

1. Improve demand forecasting

Better data leads to better decisions. Use historical sales data, seasonal trends, and real-time insights to refine your forecasts. The more accurate your predictions, the less likely you are to run into stock shortages.

2. Strengthen supplier relationships

Reliable suppliers make a huge difference. Clear communication, agreed lead times, and contingency planning can help minimise delays. It’s also worth considering multiple suppliers for key products to reduce risk.

3. Invest in real-time inventory visibility

Knowing exactly what stock you have, and where it is, is essential. Modern inventory systems and integrated platforms can help eliminate discrepancies and give you a clearer picture of stock levels across warehouses and channels.

4. Set clear customer expectations

Transparency goes a long way. If a product is on backorder, make it obvious.

  • Display estimated delivery times upfront
  • Send regular updates
  • Notify customers of any changes immediately

Customers are far more understanding when they know what’s happening.

5. Optimise your fulfilment strategy

Efficient fulfilment processes help you respond faster when stock arrives. This is where having the right operational setup really matters.

Streamlined warehousing, organised picking systems, and scalable fulfilment operations can make clearing backorders far less stressful.

How can you turn backorders into a competitive advantage?

Handled well, backorders don’t have to be a problem. In fact, they can actually be a sign of strong demand and a growing business.

When you combine accurate data, strong supply chain coordination, and efficient fulfilment, you move from reacting to backorders to managing them proactively.

That’s where having the right partner can make all the difference.

At Dee Set, we help retailers take control of their supply chains with end-to-end fulfilment and warehousing solutions designed for real-world retail challenges. From improving stock visibility to streamlining order processing, we make sure your operations stay one step ahead, even when demand spikes.

Get in touch with the Dee Set team today to optimise your retail fulfilment.

Backorder FAQs

Is a backorder the same as a pre-order?

Not quite. A pre-order is placed before a product is released, while a backorder happens when an existing product is temporarily out of stock.

How long do backorders take?

It depends on the supply chain. Some are resolved in days, others can take weeks. Clear timelines are key to managing expectations.

Should I allow backorders on my products?

It depends on your operations. If you can reliably fulfil orders within a reasonable timeframe and communicate clearly, backorders can help capture additional sales.

Can backorders be avoided completely?

Not always. But with strong forecasting, better inventory management, and efficient fulfilment processes, they can be significantly reduced.

Dee Set Logistics Ltd/Dee Set Confectionery Ltd, trading as Dee Set, registered in England, Scotland and Wales. Registered No: SC208421/04297287.Vat No: 896110414.