What Is Inventory Control? Types, Techniques & Systems
Effective inventory control is a cornerstone of smooth retail operations. It’s all about maintaining the right amount of stock: avoiding excess that ties up money and space while also steering clear of stockouts that can disappoint customers. Whether you’re managing a small retail shop or a large warehouse, inventory control practices help keep operations efficient and customer satisfaction high.
In this blog, we’ll explore what inventory control entails, from its key benefits and common challenges to the different methods and techniques that businesses use. Whether you’re new to inventory control or looking to refine your approach, this blog will give you the essential knowledge you need to manage stock effectively and confidently.
Let’s get started.
- What is inventory control?
- Benefits of effective inventory control
- Challenges in inventory control
- Types of inventory control
- Inventory control techniques
- Inventory control systems and software
How to Manage Inventory Across Multiple Stores: A Complete Guide
Dive into the essential stock management best practices every multi-site retailer should know in this free guide.
What is inventory control?
Inventory control is the process of managing stock levels to ensure you always have the right quantity of products to hand. It helps prevent overstocking or stockouts, saving you money and keeping customers happy by giving them what they want, when they want it.
Done well, it enables the maximum profit from the least amount of investment in stock — but it requires data from sales, purchasing, warehousing, loss prevention and more to ensure efficiency and accuracy.
Although the terms ‘inventory control’ and ‘inventory management’ are sometimes used interchangeably, the two are distinct:
- Inventory control is concerned with ensuring there is enough product available across store branches, warehouses and other storage locations to meet customer demand, while avoiding overstocking. Inventory is counted regularly and frequently — every day, if necessary.
- Inventory management is concerned with the broader supply chain process, including purchasing stock from suppliers and getting products into customers’ hands. It involves maintaining business relationships with suppliers and buyers, optimising purchase ordering, and so on.
| Inventory control | Inventory management |
|---|---|
| Monitors stock levels in stores | Concerned with the entire supply chain process |
| Aims to keep enough stock to meet demand without overstocking | Includes supplier and vendor management, processing and warehousing |
| Conducted periodically or perpetually, via physical counts or software | Includes final delivery to the customer |
Benefits of effective inventory control
Effective inventory control is essential to keep your business running smoothly and profitably. Here are just a few of the benefits of good inventory control (besides the obvious one — you’ll pull out far less of your hair in frustration):
1. Improved accuracy and fewer errors
Effective inventory control minimises errors by ensuring accurate stock data. With precise tracking, businesses avoid costly mistakes like stockouts or over-ordering, leading to smoother day-to-day operations.
2. Workflow optimisation
By streamlining inventory processes, effective control systems reduce the time spent on manual tasks and free up resources for higher-value activities. The result is a more efficient, focused workflow.
3. Higher customer satisfaction through better stock availability
Keeping the right stock on hand means customers can find what they need when they need it, boosting satisfaction and loyalty by meeting demand consistently.
4. Cost savings through optimised stock levels and reduced waste
Proper inventory control helps balance stock levels, reducing waste from expired or obsolete items and cutting unnecessary storage costs.
5. Increased efficiency in supply chain operations
With better inventory control, businesses can improve supply chain efficiency — leading to smoother restocking, faster order fulfilment and better collaboration with suppliers.
Challenges in inventory control
Inventory control is essential for all the reasons discussed above — and more. But that doesn’t make it easy. Here are some of the most common challenges in inventory control, and some potential solutions:
| Challenge | Solution |
|---|---|
| Time and resource demands — Inventory control can take up a lot of staff time, especially with manual systems, and that’s time you pay for. | Automate routine tasks and prioritise staff training on efficient inventory practices to save time and improve accuracy. |
| Poor visibility — Limited visibility into stock levels, especially across multiple locations and sales channels, can quickly lead to inventory mismanagement. | Use centralised or cloud-based systems that offer real-time updates, ensuring visibility across all locations and channels. |
| Fluctuating demand — Demand fluctuations make it challenging to maintain optimal stock levels. Spikes may lead to stockouts, while drops can result in excess stock. | Use advanced insights and reporting to plan stock needs accurately, based on historical sales trends and consumer data. |
| Inaccurate data entry — Manual processes increase the risk of human error. Inaccurate data entry can lead to incorrect stock counts, causing stockouts or excess inventory. | Use technology and tools such as cloud-based software, barcodes or RFID to streamline and automate manual processes, minimise data input errors and keep records precise. |
Types of inventory control
Periodic inventory control
A periodic inventory system usually relies on physical stock counts to update records. Rather than an automated system that updates in real time, it depends on frequent and comprehensive inventory audits — in other words, a great deal of manual counting (and, most likely, a great deal of mistakes).
This method can work well for smaller businesses with fewer orders and modest stock levels (such as a retailer just starting out), but it can become a time-consuming nightmare for businesses that deal with large inventories, sell across multiple locations or sales channels, or frequently move stock.
| Pros | Cons |
|---|---|
| Easy to implement | Time-consuming |
| Low upfront cost | Stock levels will rarely be up to date, which may lead to restocking delays and stockouts |
| Requires minimal information | No real-time data and low visibility |
Perpetual inventory control
Perpetual inventory systems rely on technology, such as a cloud-based ePOS, to update stock in real time whenever a transaction occurs or new stock is received. There is a higher upfront cost, but the benefits far outweigh it: accurate, always-current stock data across every location and sales channel, without the need for constant manual counting.
After all, your employees’ time isn’t free—it’s usually one of your biggest expenses and climbing steadily—so this short time pain is well worth the long term gain. Besides the time savings, perpetual inventory systems improve inventory tracking accuracy, which makes it easier to manage inventory and make smart inventory buying and planning decisions.
| Pros | Cons |
|---|---|
| Real-time stock data | Higher upfront cost |
| Greater accuracy | Requires staff training |
| Scales well across multiple locations | Relies on stable technology infrastructure |
Inventory control techniques
There are several tried-and-tested techniques businesses use to keep stock under control. The right approach will depend on the size, complexity and nature of your operation.
ABC analysis
ABC analysis categorises stock into three groups based on value and sales frequency:
- A items — high value, low volume (e.g. luxury goods). These need the closest monitoring.
- B items — moderate value and volume. These require regular attention.
- C items — low value, high volume (e.g. everyday consumables). These need the least oversight.
By focusing resources where they matter most, ABC analysis helps businesses manage stock more strategically and efficiently.
Just-in-time (JIT)
Just-in-time inventory control means ordering stock only when it’s needed — minimising the amount of inventory held at any one time. It reduces storage costs and waste, but relies on reliable suppliers and accurate demand forecasting to avoid stockouts.
FIFO and LIFO
- FIFO (First In, First Out) means the oldest stock is sold first. This is particularly important for perishable goods and helps reduce waste.
- LIFO (Last In, First Out) means the most recently received stock is sold first. This is less common in the UK but can be used in specific accounting contexts.
Safety stock
Safety stock is a buffer of extra inventory held to guard against unexpected spikes in demand or delays in supply. Setting the right safety stock level — not too much, not too little — is key to avoiding both stockouts and unnecessary storage costs.
Reorder points
A reorder point is the minimum stock level that triggers a new purchase order. Calculated using lead times and average sales data, reorder points help ensure you never run out of key products.
Inventory control systems and software
Manual inventory control is possible, but it’s time-consuming and prone to error. Modern inventory control software, particularly when integrated with an ePOS system, automates much of the heavy lifting, giving you real-time visibility across your entire operation.
What to look for in inventory control software
- Real-time tracking — stock levels update automatically with every sale, return or delivery.
- Multi-location support — manage stock across all your sites from a single dashboard.
- Reporting and analytics — understand what’s selling, what’s not and where your money is tied up, with tools like Lightspeed Insights.
- Supplier management — streamline purchasing and reordering directly within the system.
- ePOS integration — seamless connection between your sales data and your stock records means no manual reconciliation.
With the right system in place, inventory control shifts from a daily grind to a strategic advantage, freeing up your team to focus on growth rather than counting shelves.
Talk to an expert to see how Lightspeed can help you take control of your inventory.
FAQs
What is the purpose of inventory control?
The purpose of inventory control is to ensure the right amount of stock is available at the right time. It helps businesses avoid overstocking or running out of items, saving money and keeping customers satisfied.
What is the most important factor in inventory control?
The most important factor in inventory control is accuracy. Accurate data helps you make informed decisions, optimize stock levels and meet demand without waste or shortages.
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