inventory metrics for retail

8 Inventory Metrics & KPIs for Retail You Need to Know

Effective inventory management is crucial for the success of any retail business. Understanding and utilizing key inventory metrics and KPIs can significantly enhance decision-making and operational efficiency. This guide covers the most important inventory KPIs for retail and explains how they can help optimize your inventory processes.

Inventory Turnover Ratio 

Inventory turnover ratio measures how often inventory is sold and replaced over a period, calculated as Cost of Goods Sold (COGS) divided by Average Inventory with the formula as so:

Inventory Turnover Ratio = Cost of Goods Sold (COGS) / Average Inventory

It indicates inventory efficiency and demand forecasting accuracy. High turnover suggests effective inventory management and strong sales, while low turnover may signal overstocking or weak sales. Improve turnover by utilizing accurate demand forecasting and implementing inventory reduction techniques.

Tracking inventory

Gross Margin Return on Investment (GMROI)

GMROI measures the profitability of inventory by comparing the gross margin earned to the cost of the inventory. It is calculated as Gross Margin divided by Average Inventory Cost and below is the formula:

GMROI = Gross Margin / Average Inventory Cost

GMROI helps assess the profitability of inventory investments. A higher GMROI indicates more profitable inventory management. Maximize GMROI by optimizing pricing strategies and reducing holding costs to ensure a profitable inventory.

Days Sales of Inventory (DSI)

DSI measures the average number of days it takes to sell the entire inventory, calculated as:

(Average Inventory / Cost of Goods Sold) X 365

It indicates inventory liquidity and efficiency. Lower DSI suggests faster inventory turnover, enhancing cash flow. To reduce DSI, improve sales strategies and enhance inventory turnover efficiency, ensuring inventory is converted to sales quickly.

Carrying Cost of Inventory

Carrying cost of inventory represents the total cost of holding inventory, including storage, insurance, and opportunity costs. It encompasses storage costs, capital costs, service costs, and risk costs. 

Understanding these costs helps businesses grasp the financial impact of inventory holding. Minimize carrying costs by optimizing inventory levels and managing warehouses efficiently to reduce unnecessary expenses.

Stockout Rate

Stockout rate measures the frequency of stockouts, indicating how often inventory is unavailable when needed. It is calculated as the Number of Stockouts divided by the Total Number of Orders and here is the formula:

Stockout Rate = Number of Stockouts / Total Number of Orders

 A high stockout rate highlights issues in inventory management and negatively affects customer satisfaction. Reduce stock outs by maintaining safety stock levels and using accurate demand forecasting to ensure products are always available.

Order Accuracy

Order accuracy measures the accuracy of order fulfilment by comparing the number of correct orders to the total number of orders, expressed as a percentage and here is the formula:

Order Accuracy = (Number of Accurate Orders / Total Number of Orders) X 100

High order accuracy ensures customer satisfaction and reduces return rates. Improve order accuracy with automated picking systems and thorough employee training, ensuring that orders are fulfilled correctly and efficiently.

Tracking data

Rate of Return

Rate of return measures the percentage of products returned by customers out of the total sold, calculated as:

(Number of Returned Items / Total Number of Sold Items) x 100. 

A high return rate indicates product quality issues or mismatched customer expectations. Reduce returns by improving product quality and providing clear, detailed product descriptions, ensuring customers receive what they expect.

Perfect Order Rate

Perfect order rate measures the percentage of orders delivered on time, complete, and without issues. It is calculated as: 

(Number of Perfect Orders / Total Number of Orders) x 100.

High perfect order rates reflect overall efficiency and excellent customer service. Enhance this rate with integrated order management systems and real-time tracking, ensuring orders meet customer expectations.

Understanding and implementing these inventory KPIs for retail can significantly boost your operational efficiency and customer satisfaction. Managing your business with Lumi Business can help you streamline your inventory management with features tailored for small and medium businesses in Nigeria. From managing product returns, understanding your end of day sales, to providing detailed analytics, Lumi Business ensures you have the tools needed to make informed decisions, optimize your inventory processes and improve your retail business’s overall performance.

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