In this comprehensive guide to retail inventory management, you will learn everything from the definition to the basics of inventory handling, the processes involved and how to make them work in a business scenario.


What is retail inventory management?

Inventory Management is the science of purchasing, supervising, controlling and dispensing of Stock for Sale which is stored in a facility. It covers all aspects of stock management across the supply chain from the manufacturer to the point of sale manned by the retailer.

The process of inventory management begins from the time you raise a purchase order and ends (for every order) when an order is fulfilled/ delivered to the end customer. As a retailer, your job is to manage inventory smoothly and at as low a cost as possible so that you can

What is stock management?

Stock management is, in a broader sense, another term for inventory management. It involves the process of ordering, storing, processing and delivering goods. For manufacturers, stock management may refer to the finished product, while inventory management includes the raw material and finished products.

In inventory management jargon and the context of this article, stock management, and inventory management are used interchangeably.

What does Inventory management cover?

Inventory Management is a broader topic that covers the following aspects:

  • A system of naming for your inventory items (also known as Stock Keeping Units, or SKUs)
  • Naming your physical locations, down to the shelf level
  • Movement of inventory from one location to another
  • Purchasing products from Suppliers
  • Sale of products to customers
  • Frequent review and adjustment of Inventory
  • An overall reduction in dead stock

Efficient Inventory Management is critical for manufacturers, retailers, and brands because it is how they treat their core business and extract value from the process of buying and selling.

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What is the inventory management process?

As discussed above, effective management of inventory begins from the time you place your purchase order and continues until an order is fulfilled. In the online context, this end is marked either by delivering the product or accepting a return/ replacement request. Let’s look at each aspect in detail.

  1. Raising a purchase order

    On what basis should you raise a purchase order? For new retailers, raising a purchase order is the first order of business. You first need the products you’d like to sell. After this, there are two factors to take into consideration when raising a purchase order:

    a. When should I raise a purchase order?

    You need your products to be available at a certain date and time. If you know this, you can simply calculate backward to find out when you need to raise a purchase order (PO). For example, you know that your vendor takes one week to deliver the goods, so you should always raise a PO at least a week before you need the goods.

    In the real world, such a scenario is not possible. For instance, your vendor may take longer than a week at times. In such cases, you either use the average lead time, or you hold some stock as a safety net in case your vendor delays a delivery.

    What is lead time? In the above example, one week is the lead time or the time it takes for your vendor to fulfill your purchase order.

    b. For what quantities should I raise a purchase order?

    How many products do you need until you’re ready to raise the next PO? Continuing from the last example, you know that your vendor can deliver products every one week. It is, therefore, a better idea to order just the amount of goods you’ll be selling in that week than to hold more stock.

    The basic tenet of managing inventory is that holding too much stock blocks up your free cash. You want to hold just enough stock to prevent running out, and no more.

    So, if you know from past sales trends that you’ll be selling fifty units of that product in one week, you should order only fifty products more in weekly intervals. Some retailers also choose to hold safety stock, or the basic minimum required to keep selling in case a purchase order is not fulfilled in time.

    Bottomline, here are a few factors to remember about purchase orders:

      • For retailers already selling goods, past data and trends are the best places to look for help in forecasting future sales.
      • However, keep an eye out for sales fluctuations or a product going ‘out of vogue’.
      • For new retailers, market research and competitor analysis form the basis for deciding how much you should raise your first purchase order for.

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  1. Receiving goods in the warehouse/ store

    Once a vendor ships products to your warehouse, you must conduct a quality check. It seems rather obvious, but many retailers do not do this, leading to returns and replacements further down the line.

    Also, examining products at the time they’re delivered helps you identify the source of a damaged product. It is getting damaged after being received in your warehouse, or is it arriving in a damaged condition?

    The only way to tell for sure is to do a quality check on each consignment you receive.

  2.  Stocking products in a warehouse/ store

    In your warehouse, you’ll likely have tens, if not hundreds, of different product categories. Their storage depends on factors like:

      • Whether they can be kept in boxes or need to be exposed to the air
      • If they can be exposed to light/ humidity or not
      • Whether they move fast, or slow


    In any case, start by labeling every shelf and every aisle in the warehouse. When an order comes in, it is easier to find products that have shelf and aisle numbers assigned to them in a system. Also, as you grow, you’ll be fulfilling hundreds of orders each day, and the last thing you want to do is scramble around looking for the products.

    Every product has a specific code attached to it, which can help you immensely in keeping track of your inventory. When you sell across more than one channel, a product code can help you keep inventory levels accurate at all times.

    Another factor to consider is the frequency at which a product sells. If it sells more often, you should stock it at different locations through the warehouse. This way, you increase the chances of fulfilling other orders faster, since you are not always running to the same single location to get a certain product.

    For slower-moving orders, you can stock them all in one place.

    Consider what physical conditions your products need to have the longest possible shelf life. If there are any issues in the warehouse such as a water leakage, be sure to move all products to a safer location until the problem is resolved.

    In a store setting, the warehouse may simply be a storeroom at the back. If this is the case, be extra-diligent in moving products from the storeroom to the shelves and vice-versa, as a mix up can cause you to lose track of your inventory.

  3.  Accepting an order from a customer

    In An Online Store/ Marketplace:

    If you are an online retailer, a customer visits your online store or adds your products to a marketplace cart. Once the order is placed, you receive a notification for fulfillment.

    At the backend, inventory adjustment needs to take place. In olden days, someone would manually reduce the stock count for that order’s products. You may have also noticed how supermarket staff count products on the shelves each day and reconcile that number with the number of sales made that day.

    Today, manual inventory management is almost obsolete. Many systems and products have been developed that can automatically adjust inventory every time an order is placed.

    In A Retail Outlet:

    If you sell through your store, using a Point Of Sale (POS) system can help you manage inventory seamlessly. When you set it up for the first time, you need to do a stock count for each product and update that number in the system. From then on, the system will automatically reduce/ add inventory based on your orders.

    B2B retailers need to pay special attention to inventory management as they handle bulk orders. You can consider having a website to help your customers place orders with ease. Else, you can also accept purchase orders from your customers and fulfill them.

    In both scenarios, inventory management is important. If you have a website, you can integrate it with an inventory management system for all your B2B orders as well.

  4.  The order fulfillment process

    Here’s what order processing in a warehouse entails:

    In An Online Store/ Marketplace:

    Online-order-processing-flow-in-a -warehouse


      • They sort orders into bins and pick products in sequence. Usually, the same product across different orders is added first to the bin.
      • Once all items in an order are in one place, they print an invoice for that order.
      • If using a manual inventory system, stock levels for these products are adjusted.
      • If using an integrated software product, inventory count is already adjusted in the earlier step, as soon as the order is placed.
      • Based on the shipping partner’s guidelines, orders are packaged in different boxes/ containers. The delivery details and shipping labels are attached to the outside of the package.
      • All orders shipped in a day are considered a consignment and are handed over to the shipping partner. The partner assigns Airway Bill Numbers (AWB) for each package.
      • In case more than one shipping partner is involved, each partner’s consignment is different. Thus, there can be more than one consignment sent out in a day.

    In A Retail Outlet:

    For retail outlets, order fulfillment is a very straightforward affair. You need to bill the products (if you use a POS system, the inventory is adjusted at this point) and the customer pays for it. You may choose to accept returns and replacements for a given amount of time after the sale.

    The warehouse team consolidates all orders placed before the shipping cut-off for the day.

  5.  Shipping Online Orders

    Once the products are shipped, you can track them using the AWB number provided by the shipping partner. Depending on your shipper’s Service Level Agreement (SLA), products may be delivered in a matter of days, or take a few weeks (when shipped globally).

    Usually, customers expect that you provide them with the AWB number so they, too, can track the order. Once an order is delivered to a customer, your shipping/ delivery partner will send you an update. At this point, an order is considered fulfilled.

    In a day or two, you can send out a feedback request to your customers to see how you can do better.

  6.  Returns and replacements

    In An Online Store/ Marketplace:

    In some cases, a customer may choose to return a product or ask for a replacement. If the purchase was made online, the retailer usually pays for shipping in the opposite direction or enters into an agreement with the shipping partner to offer one return/ replacement for free.

    There are several different ways to handle your returns, and some of them are discussed in this article.

    In A Retail Outlet:

    In the context of a retail outlet, the customer would bring the product back to your store with a bill. If you have multiple different stores, consider accepting returns at all stores to increase customer satisfaction levels. When inventory is managed as a single entity, this will not be an issue.

    Usually, returns and replacements are indicators of either a faulty product or inaccurate descriptions.

    Whenever a product is returned, you need to check for faults and damages, and if the product is fine, add it back to your inventory and update the count. Else, you may discard the product and write it off.

    Whenever a replacement request is made, you need to update the inventory with the returned product and reduce the inventory count for the shipped product.

Best Practices In Inventory Management

  1. Strong fundamentals – Name your SKUs correctly

    The way you name your products and SKUs will determine how inventory management is standardized across your company across all team members without any confusion. Note that there is a difference between SKU codes and Barcodes which is important to know.

  2. Know how much inventory you have

    At any time, the hallmark of great inventory management is the ability to know instantly how much stock is available for any given SKU. Sometimes while running a retail business it is common to misplace items. There is also the issue of pilferage. This, along with not knowing how your sales stand against your inventory, is a recipe for disaster.

  3. Predictable stock holding

    Closely monitoring sales and purchases across customer segments and seasonality will help you have efficient stock levels and optimize your working capital. Use historic sales data to forecast how much stock you might need during different time periods in the future.

    Setting reorder points for each product helps you determine when you need to raise a purchase order. Luckily, inventory management is not guesswork. You can use these inventory calculations to help you decide how much stock you need.

  4. Reliable Suppliers

    Your suppliers add a great deal of value to your business by ensuring that you never go out of stock for longer than your business allows. Fewer reliable suppliers are always better managed than numerous distributed suppliers.

  5. Stock Audit

    The process of a stock audit is discussed in detail down below. Every retail business must set aside a time for stock audits as they help you gain an accurate picture of your inventory.

  6. Better Forecasting

    One of the roles of an inventory manager is to use past trends, industry forecasts and prevailing trends to identify how much stock you’ll need in an upcoming time period. The better the process used for calculating these numbers, the less your chances of making inventory mistakes.

  7. Planning For Emergencies

    Selling too much during a spike is a happy accident. However, you need to still ensure that you don’t run out of stock. Inventory calculations are not set in stone. Always review them every month, and adjust for periods when you last had a spike.

    We have discussed above the case when a vendor takes longer than usual to deliver your products to you. We recommend that you maintain safety stock for these periods.

What are the different types and methods of inventory management?

  1. First-In-First-Out

    This is especially applicable to perishable goods and those that have an expiry date. First-in-first-out ensures that products move in a single stream and you’re not left with extra, spoilt goods.

  2. Dropshipping

    Dropshipping is one method of doing business more than it is an inventory management technique. In this method, you do not hold any stock. Your vendor ships and fulfills your orders in packages bearing your name and label.

  3. Just-In-Time

    In this method, the vendor management process and forecasting are improved to such an extent that you do not need to hold any safety stock at all. Read more about this method and how it may apply to your business.

  4. Consignment Inventory Handling

    In this method, your agreement with your vendor is that you only pay the vendor when their product sells. Usually, a minimum agreement is in place for such contracts. Read more about consignment inventory here.

  5.  Backordering

    In backordering, you only place an order with your vendor when you receive an order from a customer. Backordered products have a longer shipping time but they virtually eliminate the need for inventory holding. Read more about the pros and cons here.

What does an inventory manager do?


An inventory manager is often in charge of a warehouse or storage facility. Broadly, their role involves:

      • identifying shortages or the probability of running out of stock, before it happens
      • Conducting regular stock audits
      • Reporting on the levels of inventory
      • Calculating how much stock is needed and raising purchase orders
      • Use inventory management methods to optimize its procurement and use
      • Educate warehouse staff on correct inventory handling
      • Forecast how much inventory may be needed in that particular facility in the next order cycle

Someone who enjoys working with data and can draw the right conclusions from past statistics is the right person for the role of an inventory manager.

If you hate math, this role is probably not for you. Also, retailers managing more than one warehouse should consider hiring one inventory manager for each facility.

Stock counting and audit

We have covered the different methods of stock reconciliation in this article. There is no right or wrong way to do it, just one that works. Most often, the first count is always conducted by suspending business for that time period to count the entire warehouse together and organize it efficiently. Subsequent counts can be done in parts.

The process of stock counting is as follows:

      • Choose a day and time when you will have staff available for counting, and it will not hinder regular business. Counting after the last consignment goes out is well worth the overtime you may need to pay your staff.
      • Use this opportunity to label all shelves and aisles correctly. Designate one area of the warehouse as a ‘command center’ of sorts, where people can bring doubts and damaged products.
      • Count the stock in its existing location. If it is being moved to a different location, count once before moving, and once after.
      • Use current data. Do not count products that have been ordered but need to be shipped.
      • Integrate all data into an inventory management system. From then on, the system adjusts the inventory based on orders.
      • Count everything- don’t take boxes at face value. If a box says it contains ten staplers, check anyway.

A stock audit helps you reconcile your book and actual inventory values. For a variety of reasons, discrepancies arise in these two numbers, such as:

      • using a manual inventory management method and losing track after a point
      • Stock loss due to theft and damages
      • Products from purchase orders rejected after a quality check but added to the inventory
      • Returns and replacements not processed correctly

These are just a few reasons. Counting stock often helps you account for them correctly.

Read more about warehouse management and how you can improve your operational efficiency here.

The need for inventory management software


An inventory management system or inventory management software performs most tasks that would otherwise have to be done manually. Here are a few things that a good system like Primaseller can do for you:

      • Automate your purchase orders, or alert you when stocks run low
      • Dynamically update stock levels based on orders received, 27X7
      • Display all orders in one place for easy of fulfillment
      • Allow you to track, fulfill and ship online orders
      • Allow for a POS setup for your retail outlets to be integrated with other channels
      • Account for returns and replacements when needed
      • Show you an analysis of your sales trends so you can forecast more accurately
      • Integrate all your sales channels, offline and online
      • Expand as your business grows- you can set up as many channels as you like
      • Integrate with QuickBooks Online for accounting and directly export invoices to the accounting system
      • Integrate with shipping partners around the world for seamless order fulfillment and tracking

Types of inventory software


Spreadsheets are typically not inventory software, but they can be used for that purpose. Indeed, up until a few years ago, many retailers did do that. However, spreadsheets need continuous and diligent manual intervention, and still, do not guarantee accurate inventory management.

Basic inventory management systems

The first inventory management systems were POS software typically installed on systems. With the advent of online retail, some of these systems were employed to manage online orders as well. However, the greatest disadvantage of these systems is that they are installed on one or a few systems at a time. They aren’t accessible from everywhere, and there is always the risk of data loss.

Cloud-based applications

Cloud-based inventory management systems work on a subscription model. Your data is securely stored in a remote server and is accessible through the right credentials. Data loss is not a possibility and you can increase the benefits you avail as your business grows. These applications are not restrictive and are designed to grow with you.


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