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When running a supply chain or ecommerce operation, few issues impact customer experience more than backorders and out-of-stock situations. At first glance, they may seem similar. A customer can’t get the product right away in both cases. But operationally, financially, and strategically, they are very different.
Understanding the backorder vs out of stock difference is critical for reducing lost sales, improving fulfillment performance, and protecting customer trust.
At Buske Logistics, we’ve spent over 100 years helping companies across North America build resilient supply chains that prevent disruptions like stockouts and backorders. We support industry leaders including PepsiCo, Diageo, Stellantis, Mother Parkers, Golden State Foods, and Starbucks.
In this guide, you’ll learn:
Let’s break it down simply.
A backorder happens when a customer places an order for a product that is temporarily unavailable, but the order is still accepted and will be fulfilled later when inventory is replenished.
In other words: You sell the product even though it’s currently not in stock.
The customer agrees (or is informed) that they will receive the product once new inventory arrives.
Example of a Backorder
A customer orders 100 units of a product on your website.
The order is not canceled. It is simply delayed. This is a backorder.
Businesses often use backorders as a strategic way to continue generating sales even when inventory is temporarily unavailable. By allowing backorders, you can avoid losing sales, capture ongoing customer demand, and maintain revenue during supply chain disruptions or replenishment delays.
This approach is especially useful for high-demand products, helping you keep orders flowing while inventory is being restocked.
Industries Where Backorders Are Common
For example, automotive companies like Stellantis may experience temporary part delays where backorders ensure production continues without losing customer demand.
Out of stock (OOS) means a product is unavailable and cannot be purchased or fulfilled immediately. Unlike backorders, the sale does not go through.
When a product is out of stock and backorders are not available, customers typically have a few options: they may leave your website without making a purchase, choose an alternative product, or sign up for restock notifications and wait for the item to become available again.
Example of Out of Stock
A customer visits your website:
This is an out-of-stock situation.
Out-of-stock situations typically occur when demand exceeds forecasts, inventory is poorly managed, supplier delays disrupt replenishment, inventory visibility is limited, or warehouse restocking processes are too slow.
Unlike backorders, which allow customers to place orders for future fulfillment, stockouts often result in lost sales and missed revenue opportunities because the product is unavailable for purchase when the customer is ready to buy.
Understanding the difference between backorder vs out of stock is essential for supply chain planning.
Simple Explanation
A backorder means you still sell the product.
An out of stock situation means you stop selling the product.
This is the core difference in the backorder vs stockout comparison.
The stockout vs backorder distinction matters because it affects:
1. Revenue Flow
2. Customer Retention
3. Brand Perception
Frequent stockouts can signal:
4. Operational Planning
Backorders can be planned and controlled. Stockouts usually signal:
1. Prevents Lost Sales
Instead of losing customers, you retain the order.
2. Helps Maintain Demand Signals
Backorders show real product demand, helping improve forecasting.
3. Supports High-Demand Products
When demand spikes, backorders allow continued selling.
4. Improves Revenue Stability
Even during shortages, revenue pipelines remain active.
1. Delayed Fulfillment
Customers must wait for product delivery.
2. Risk of Cancellation
Long delays may cause customers to cancel orders.
3. Customer Satisfaction Issues
Even if orders are fulfilled later, delays may impact experience.
4. Supply Chain Pressure
Backorders can create urgency that strains replenishment systems.
Both backorders and stockouts usually come from deeper supply chain issues. Common causes include:
According to the U.S. Census Bureau's Manufacturing and Trade Inventories and Sales (MTIS) report, inventory levels and inventory-to-sales ratios are key indicators of business activity across retail, wholesale, and manufacturing sectors, helping companies measure how effectively inventory aligns with customer demand.
Modern inventory management systems play a critical role in reducing both backorders and stockouts by providing greater visibility across your supply chain. A strong system helps you track real-time inventory levels, automate replenishment alerts, improve demand forecasting, reduce warehouse delays, and synchronize inventory across multiple sales channels.
By keeping inventory data accurate and up to date, you can also prevent overselling and make more informed inventory decisions.
Related Resources:
As businesses scale, inventory complexity increases. You may face:
Without strong inventory management systems, even small forecasting errors can quickly lead to stockouts, backorders, lost customers, and higher operational costs. Limited visibility and poor inventory control make it more difficult to respond to changes in demand and maintain product availability.
That’s why many companies rely on experienced 3PL partners to improve inventory accuracy, optimize inventory flow, and ensure products are available when customers need them.
Learn more about 3PL operations.
At Buske Logistics, we help companies prevent inventory disruptions through advanced warehouse and supply chain strategies. With over 100 years of logistics experience, we design systems that improve:
Our solutions include:
Buske's extensive industry experience helps reduce risk and improve supply chain performance for businesses of all sizes. We support leading global brands, including PepsiCo, Diageo, Stellantis, Mother Parkers, Golden State Foods, and Starbucks, giving us deep expertise across a variety of industries and operational requirements.
These companies rely on us to manage complex inventory systems where even small disruptions can lead to major financial impact. Our experience allows us to anticipate demand shifts and reduce:
Preventing backorders and stockouts is not about eliminating demand spikes—it’s about building a supply chain that can absorb them. Whether you operate in retail, manufacturing, food and beverage, or wholesale distribution, the goal is the same:
Keep inventory visible, accurate, and replenished at the right time.
Below are proven prevention strategies used by high-performing supply chains.
Most backorders vs out of stock problems start with poor forecasting. If you underestimate demand, you get stockouts. If you overpromise inventory availability, you get backorders.
How to improve forecasting:
Modern demand planning tools integrated with a Warehouse Management System (WMS) can significantly reduce errors.
Strengthening inventory visibility in real time is essential for preventing stockouts and maintaining accurate inventory levels. When you don’t have a clear view of available inventory, it becomes much easier to oversell products, miss critical replenishment windows, or lose track of stock across multiple locations.
Real-time inventory visibility helps you make faster, more informed decisions, ensuring products are available when customers need them while reducing costly inventory errors.
Best practice: Use a centralized inventory system that syncs warehouses, sales channels, and distribution centers. This is critical for omnichannel operations.
Safety stock is your buffer against uncertainty.
Too little safety stock = stockouts
Too much safety stock = excess inventory
Key factors to set safety stock:
Companies like PepsiCo and Starbucks rely on structured safety stock models to maintain consistent product availability across regions.
Backorders often occur when suppliers are unable to replenish inventory quickly enough, making proactive supplier management essential. By establishing vendor performance KPIs, continuously monitoring lead times, diversifying suppliers where appropriate, and strengthening communication channels, you can better anticipate disruptions and respond more effectively.
While supply chain delays are often outside your direct control, strong coordination can significantly reduce their impact on your operations.
Using automated reordering systems can significantly reduce the risk of inventory shortages caused by manual errors. These systems automatically trigger reorder points, help prevent inventory dips, and maintain a steady flow of stock based on real-time demand and inventory levels.
When paired with a strong Order Management System (OMS), you can keep orders and inventory synchronized across all sales channels, improving accuracy and ensuring products remain available for customers.
Improving warehouse efficiency and layout is essential for maintaining smooth inventory flow and preventing fulfillment delays. Even when inventory is available, operational inefficiencies such as slow picking processes, poor slotting strategies, inefficient receiving workflows, and congested storage areas can create bottlenecks.
By optimizing your warehouse design and processes, you can improve productivity, accelerate order fulfillment, and ensure inventory moves efficiently throughout the facility.
Inventory rotation methods also influence stockouts and backorders. From earlier strategy insights:
When inventory is not rotated properly, usable stock can sit unused while demand remains unfulfilled.
Related reading: FIFO vs FEFO vs LIFO
Modern supply chains rely heavily on technology to eliminate inventory gaps. Key systems include:
A Warehouse Management System (WMS) plays a key role in improving inventory control and operational efficiency. It helps you track inventory in real time, prevent overselling, improve picking accuracy, and optimize overall warehouse workflows. By providing better visibility and control over stock movements, a WMS ensures smoother operations and more accurate order fulfillment.
An Order Management System (OMS) ensures that orders are routed correctly, inventory is synchronized across all sales channels, and backorders are properly tracked and managed. By centralizing order and inventory data, an OMS helps reduce errors, improve fulfillment accuracy, and maintain better control over the entire order lifecycle.
A Transportation Management System (TMS) helps reduce delays and improve overall delivery performance. It optimizes shipping routes, shortens lead times, and improves delivery accuracy by providing better visibility and control over transportation planning and execution. With a TMS in place, you can streamline logistics operations and ensure more reliable and efficient deliveries.
Without integrated systems, businesses operate with fragmented data. That leads to:
With integrated systems, inventory becomes predictable and controllable.
Partnering with a 3PL is one of the most effective ways to reduce inventory disruptions.
A strong 3PL like Buske Logistics helps you:
1. Improve Inventory Accuracy
Through real-time tracking and warehouse visibility.
2. Optimize Fulfillment Speed
Faster picking, packing, and shipping reduces fulfillment delays.
3. Strengthen Inventory Planning
3PLs use historical data and demand trends to improve replenishment timing.
4. Scale Warehouse Capacity Quickly
When demand spikes, you need flexible capacity—not delays.
5. Reduce Operational Complexity
Instead of managing warehouses, systems, and staffing internally, businesses can outsource fulfillment to experts.
At Buske Logistics, we don’t just store inventory—we actively manage it to prevent disruptions. With more than 100 years of logistics experience, we help companies build supply chains that stay stable even during demand spikes.
Our approach includes:
Buske is trusted by leading global brands across multiple industries, including PepsiCo, Diageo, Stellantis, Mother Parkers, Golden State Foods, and Starbucks. These companies rely on us because even small inventory disruptions can create significant downstream impacts on production, distribution, and customer experience.
Preventing stockouts is more important than ever because they impact more than just lost sales—they directly affect brand trust and long-term customer loyalty.
When customers repeatedly encounter “out of stock” messages, they are more likely to switch to competitors, reduce their loyalty to your brand, and decrease repeat purchases over time. While backorders can help recover some demand, preventing stockouts in the first place is always more cost-effective and better for maintaining strong customer relationships.
To summarize:
The goal of any modern supply chain should be:
Fewer stockouts, smarter backorders, and full visibility across inventory.
Inventory challenges require more than software—they require experience. For over 100 years, Buske Logistics has helped businesses across North America:
Whether you're managing retail distribution, food logistics, or complex B2B fulfillment, we help you maintain consistent product availability and customer experience.
Ready to improve your inventory performance? Contact Buske Logistics today.
A backorder means a product is temporarily unavailable but can still be purchased because additional inventory is expected to arrive and be fulfilled at a later date. An out of stock item, on the other hand, is unavailable for purchase because there is no inventory currently available and no immediate replenishment timeline. Understanding the difference between backorder and out of stock is important for inventory management, customer experience, and supply chain planning. Backorders allow businesses to continue capturing sales, while out of stock situations often result in missed revenue opportunities and lost customers.
In most cases, yes. A backorder allows a business to keep the sale and fulfill the order once inventory becomes available, helping maintain revenue and customer demand. An out of stock situation typically prevents customers from completing a purchase, which can lead them to seek alternatives from competitors. While backorders may involve longer delivery times, they often provide a better outcome for both businesses and customers when inventory replenishment is expected within a reasonable timeframe.
Stockouts are commonly caused by inaccurate demand forecasting, inventory management errors, supplier disruptions, unexpected spikes in demand, transportation delays, and limited inventory visibility. Seasonal fluctuations, promotional campaigns, and supply chain disruptions can also contribute to stock shortages. Businesses that lack real time inventory data may struggle to replenish products quickly enough, increasing the likelihood of stockouts and lost sales opportunities.
Businesses can reduce backorders by improving demand forecasting, maintaining appropriate safety stock levels, monitoring inventory in real time, and strengthening supplier relationships. Advanced inventory management systems help track stock levels accurately and identify replenishment needs before shortages occur. Partnering with an experienced 3PL provider can also improve inventory visibility, warehouse efficiency, and replenishment planning, helping businesses maintain product availability and meet customer demand more consistently.
Backorders can impact customer experience if delays are lengthy or communication is unclear. However, businesses that provide accurate delivery estimates, proactive updates, and transparent communication can often maintain customer trust throughout the process. Many customers are willing to wait for products they want if they understand when their order will be fulfilled. Effective inventory management and timely replenishment help minimize delays and improve the overall customer experience.
Yes. A third party logistics (3PL) provider can significantly reduce stockouts by improving inventory accuracy, warehouse efficiency, and replenishment planning. Advanced warehouse management systems provide real time inventory visibility, helping businesses monitor stock levels and respond quickly to changing demand. A 3PL can also optimize inventory placement, streamline fulfillment operations, and improve supply chain responsiveness, reducing the risk of inventory shortages and backorders.
Companies often use backorders because they allow businesses to retain sales and fulfill customer demand once inventory becomes available. Canceling orders can result in immediate revenue loss and may encourage customers to purchase from competitors. Backorders provide a way to manage temporary inventory shortages while preserving customer demand and maintaining sales momentum. When managed effectively with clear communication and reliable replenishment timelines, backorders can help businesses balance inventory challenges without sacrificing future growth opportunities.
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