Backorder Management: How to Handle and Reduce Backorders

A field rep walks out of a busy account with a strong order signed and confirmed. The system accepts it. 

Then three of the SKUs on that order are nowhere to be found on the warehouse shelf. 

The sale is real, the customer is expecting product, but the order is now stuck in a holding pattern until stock arrives. 

That space between a sale you have won and a sale you have actually delivered is where backorders live.

Backorders are a normal part of running a distribution business. The question is never whether they will happen, but how well you handle the ones you have and how often you let new ones pile up. 

In this guide, we cover both: the practical steps for managing backorders already in your queue, and the long-term moves that keep demand from outrunning your inventory in the first place.

What is a backorder, and how is it different from out of stock?

A backorder is an order accepted for an item that is temporarily unavailable, with a commitment to fulfill it once stock returns. 

The customer can still place the order, and you still plan to ship it. 

A backorder indicates that demand exceeds your current inventory levels, but the sale stays alive instead of vanishing at checkout.

The lifecycle is simple. A customer or rep places an order for an item you do not have on hand right now. Your system accepts it and flags it as awaiting stock. Behind the scenes, your supplier replenishes your inventory. When that stock arrives and is checked in, you fulfill the waiting order and ship it.

Backorder vs. out of stock

These two states get used interchangeably, but they are not the same, and the difference shapes how you set customer expectations.

A backordered item can still be purchased and is expected to be available within a reasonable timeframe. There’s a plan to restock, with a date attached. 

An out-of-stock item is different: no inventory is available, and no restock date is confirmed. The product may be seasonal, discontinued, or simply unscheduled for replenishment.

For out-of-stock items, your job is to redirect the customer to an alternative or capture their interest for later. And for backordered items, your job is to set an accurate expected fulfillment date and keep the customer informed until the product ships.

What causes backorders?

1. Demand-side causes

Sudden demand spikes are the most visible trigger. A product catches on, a seasonal pattern kicks in, or a trade promotion drives more orders than you planned for. 

When customer demand jumps faster than your replenishment cycle can respond, normal inventory sells through, and the next orders land on backorder. 

2. Supply-side causes

Supplier delays are the other major driver. If a supplier takes longer than expected to deliver raw materials or finished goods, your shelves can empty before new stock arrives. 

These disruptions are nearly universal: in McKinsey’s Global Supply Chain Leader Survey, 9 out of 10 respondents reported encountering supply chain challenges. 

Single-source dependency makes this worse: when your only supplier slips, you have no fallback. Long supplier lead times and thin just-in-time buffers leave little room for error when the supply chain hiccups.

3. Internal causes

Some backorders are self-inflicted. Inventory record inaccuracy is a frequent culprit: the system says you have stock you do not, so a customer orders an item you cannot actually ship. 

Reorder points set too low, human errors in order entry, and data entry mistakes create backorders that you could prevent with better warehouse management processes. 

Are backorders bad? The real cost and the upside

Backorders carry a genuine cost, but treating them as a pure negative misses half the picture.

On the downside, long delays lead to customer dissatisfaction. Customers may not want to wait, or may stop trusting that you will deliver, and cancel to buy elsewhere. 

If customers frequently encounter backorders, customer loyalty erodes, and you lose market share over time. 

Backorders also raise fulfillment costs through split shipments and expedited freight, and they add operational workload as your team tracks and chases each delayed order separately. 

The upside is real too. Backorders keep demand visible and revenue flowing during a stockout rather than losing the sale at checkout. 

They also act like a built-in customer survey, surfacing market insights about which products buyers want and when demand peaks. 

By letting you capture sales without holding excess inventory against every possible spike, backorders can improve cash flow and reveal true demand. Handled well, they protect the relationship instead of straining it.

How do you handle backorders you already have?

Once an item is on backorder, execution decides whether the customer waits patiently or walks away. Here’s how you can handle such situations: 

1. Communicate early and set accurate ETAs

Transparent communication with customers is the single most important part of backorder management. 

Tell the customer the moment an item is backordered, and give a realistic expected shipping date. 

Label availability clearly so buyers know what to expect before they order. If the date moves, say so. 

Companies that update customers with realistic estimated ship dates reduce cancellations, because a customer who feels informed is far more forgiving than one left in the dark. 

Your customer service teams should be equipped to answer status questions and resolve issues quickly as timelines shift.

2. Decide your shipment policy

When an order contains both in-stock and backordered items, you need a rule for how it ships. 

Split shipments allow available products to be sent immediately while backordered items are shipped later, at the cost of higher shipping and more packages. 

Your options are an all-or-nothing policy, a ship-as-available policy, or a capped policy that limits the number of shipments. 

Whichever you choose, pick the rule that matches your shipping budget and your customers’ tolerance for waiting, and apply it consistently.

3. Prioritize and allocate incoming stock

When replenishment arrives, decide who gets it first. You can fulfill fairly in an ordered manner, or prioritize high-value accounts and larger orders. 

Order management systems can route limited stock to high-value customers automatically. 

The key is making sure backordered lines do not get buried behind newer in-stock orders, so use your system to auto-allocate incoming stock to the orders already waiting on it.

How do you reduce backorders?

Handling backorders well protects individual sales. Reducing how often they happen protects the business. 

1. Set reorder points and safety stock with real data

Reorder points are the inventory thresholds that trigger a new purchase order. Calculate them from your sales rate and your supplier lead time so you restock before stock reaches zero. 

Pair them with adequate safety stock, a buffer that absorbs unexpected demand spikes while you wait for the next shipment. 

The balance is important: sufficient safety stock prevents stockouts, but too much ties up cash flow and storage space in excess inventory. 

Reassess your safety stock levels as sales patterns shift, rather than setting them once and forgetting them.

2. Forecast demand using historical data

Use historical data, seasonality, and your promotion calendar to predict future sales before a spike hits. 

Analyzing sales trends and inventory trends helps you anticipate demand and stock the right products at the right time. 

The better you can predict future sales, the more lead time you have to order ahead of a surge.

3. Diversify your suppliers

Working with multiple suppliers reduces dependency and mitigates supply chain risks, so when one supplier hits a delay, a backup supplier can fill the order. 

Share your sales velocity and stock levels with suppliers so they can plan production and keep your replenishment steady.

4. Keep inventory data accurate and real time

Much of backorder prevention comes down to knowing what you actually have. Real-time inventory visibility prevents overselling and the backorders that follow, because every channel reflects the same stock count the moment a sale happens. 

Run routine inventory counts to reconcile your records with reality, and set automated low-stock alerts so reorders happen early. 

The less time it takes your data to reflect a change, the more time you have to act before a backorder occurs.

5. Track your backorder rate to measure progress

You cannot improve what you do not measure. The backorder rate tells you how often demand outpaces your available stock, and tracking it shows whether the levers above are working. 

The formula is simple:

Backorder rate = (backordered orders ÷ total orders) × 100

…measured over a defined period.

If you processed 2,000 orders last month and 120 of them went on backorder, your backorder rate is 6 percent. 

Watch the trend against your own baseline rather than chasing a universal “good” number, since the right rate varies by category and business model. 

Shipment and allocation policies: A Quick comparison

When an order mixes in-stock and backordered items, your shipment policy decides the customer experience. Here’s how the three common approaches compare.

Where the right software fits

Both halves of backorder management, handling the orders you have and reducing the ones to come, depend on the same foundation: accurate, real-time inventory data connected to your order flow. 

When stock counts, order status, and supplier information live in separate systems, backorders multiply because nobody sees the full picture in time to act.

Inventory management software closes that distance, giving teams real-time stock visibility across channels, automated low-stock alerts that trigger replenishment before a stockout, and order management that flags backordered lines. 

Use a platform like SimplyDepo that connects stock, orders, routes, and field sales in one real-time system, so reps never commit to product that is not available and managers see account-level risk early. 

Its automated reorder triggers and order validation are built to prevent backorders and missed deliveries, while QuickBooks sync and offline mobile access keep data aligned across warehouse, field, and finance.

Backorders will always be part of the business. But with the right data and systems in place, they remain as a signal of demand rather than a steady source of lost sales and disappointed customers.

The fastest way to see fewer backorders is to fix the data gap between your field team and your warehouse. Book a demo to see how SimplyDepo closes it.