Buffer Inventory

What Is an Inventory Adjustment? (With Examples and Tips)

By Team TranZact | Published on Aug 3, 2023

Buffer Inventory is important in keeping businesses running smoothly and making customers happy. It protects enterprises from supply chain management difficulties, providing a steady flow of goods and boosting consumer satisfaction. This article will discuss how buffer inventory transforms organizations into leading enterprises, ready to meet client expectations confidently.

TranZact - Best Inventory Management Software

What Is Buffer Inventory?

Buffer inventory is an excess of inventory maintained in a warehouse. It serves as a safety net in an emergency, delays, a supply chain failure, or an unexpected rise in demand.

Why You Need to Keep Buffer Inventory?

Buffer inventory serves as an temporary solution for your fulfillment supply chain. Your entire supply chain depends on the amount of inventory that is in sync with incoming orders. That is why it is important to have an adequate amount of buffer inventory in stock.

Tips to Calculate Buffer Inventory Levels

Having relevant data at your fingertips will allow you to improve storage and ensure on-time delivery of orders by simplifying buffer inventory calculations. Let us look at the buffer inventory formula and calculation:

  • Safety Stock Calculation

The safety stock method helps calculate the appropriate quantity of buffer inventory for your business. To calculate this value, you must know the maximum daily consumption, maximum lead time, average daily usage, and lead time.

Formula: (Maximum daily sales x Maximum lead time) - (Average daily usage x Average lead time)

  • Demand-Based Buffer Inventory

In addition to determining inventory and order data, historical data can also be used to calculate buffer inventory. You can make informed judgments about your safety stock when you understand the inventory turnover rate, SKU (stock-keeping unit) performance, and other metrics.

  • Greasley's Method

Greasley's inventory calculation method considers the average difference in lead time, average demand, and the desired service level.

The standard deviation in lead times (LT) indicates how much lead times vary or fluctuate over time. In contrast, average demand means the goods required to meet consumer demand in a given period.

Formula: 𝜎LTx average demand x Z

  • Hezier and Render Method

Heizer and Render's inventory buffer strategy works well when there are large fluctuations in inventory levels due to supplier or manufacturer inconsistencies.

The Hezier and Render approach involves multiplying your desired service factor (Z) by the standard deviation in lead time (LT). It is the degree and frequency with which the average lead time differs from the actual lead time.

Formula: Z x 𝜎LT

Note that the higher your service factor level, the more buffer inventory you require, which can considerably increase your carrying costs.

Simplifying Your Inventory Management

Maintaining buffer stock in inventory management, in general, can be difficult. It contains various minor characteristics that must be taken care of daily. Let's look at how to streamline the inventory management process to maximize production and results:

1. Make Use of Inventory Management Software

Inventory management software that allows you to track and manage goods from numerous channels is important. If you have goods held in several warehouses, inventory management software can serve as a central hub for collecting data from all of them. Planning to meet incoming demand can help you optimize expenses and make wiser decisions. You can also cut logistics expenses and have enough safety stock when needed.

2. Daily Inventory Valuation

Regular inventory valuation will assist you in keeping track of the inventory you have and the amount of inventory you require. With deep insights, you will strike the proper balance between the two and avoid debt stock accumulation and stockout scenarios.

3. Deploy Third-Party Logistics Providers

Third-Party logistics service providers handle all of your business fulfillment activities. These procedures include inventory management, order management, packing, processing, and shipping. Such fulfillment companies have powerful inventory management tools that greatly improve your forecasting and sales.

4. Operations With Barcodes

Bar-coded activities are the next step in streamlining your inventory management procedures. Adding a barcode to your product SKU (stock-keeping unit) and storage bin allows you to locate products more easily within the warehouse. It will help you boost floor efficiency, and your staff can follow a regular operating method for every order rather than randomly allocating items.

Streamline Your Buffer Stock Inventory Management With TranZact

Buffer stock is important to your company's success because it allows you to avoid the problems and expense of backorders while still providing regular services. Like any other form of backup, the buffer stock is useful if you're trying to get the most out of your business.

With TranZact, you can efficiently eliminate stockouts, streamline inventory management, and maximize your buffer stock for complete oversight with our ERP inventory management software.

FAQs on Buffer Inventory

1. Are there any other methods to determine buffer stock than formulas?

Yes, in addition to formulas, businesses can use various ways or procedures to establish buffer stock. It can include using simulation models, historical data analysis, safety stock optimization approaches, or advanced inventory management software that integrates demand forecasting and supply chain analytics.

2. How frequently should buffer inventory be examined and adjusted?

Buffer inventory should be monitored and updated regularly to accommodate changes in demand patterns, supply chain dynamics, and business situations. It is recommended to do periodic reviews and make adjustments as needed to maintain an ideal amount of buffer inventory.

3. What factors determine the amount of buffer inventory required?

Demand fluctuation, supply chain lead time, supplier reliability, market uncertainty, customer service level agreements, and the cost of stockouts versus maintaining excess inventory all influence the degree of buffer inventory.

4. Is buffer inventory always required for all products?

Buffer inventory is not always required for all products. Its application is decided by factors such as demand fluctuations, lead time unpredictability, product importance, and the impact of stockouts on customer happiness and corporate profitability.

5. How does buffer inventory vary from standard inventory?

Regular inventory is scheduled to stock that is intended to fulfill anticipated demand. On the other hand, buffer inventory is kept as a safety net to defend against uncertainties and is not intended to be used under regular conditions.

6. What is buffer inventory vs. safety stock?

The terms "buffer inventory" and "safety stock" are interchangeable when referring to the additional stock an e-commerce company maintains as a buffer against supply and demand fluctuations. Buffer stock in inventory control or safety stock ensures adequate inventory to meet demand and fulfill orders on schedule.


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TranZact

TranZact is a team of IIT & IIM graduates who have developed a GST compliant, cloud-based, inventory management software for SME manufacturers. It digitizes your entire business operations, right from customer inquiry to dispatch. This also streamlines your Inventory, Purchase, Sales & Quotation management processes in a hassle-free user-friendly manner. The software is free to signup and gets implemented within a week.