How to optimize your stock reorder points
What Is a Reorder Point?
A reorder point (sometimes called the reorder level) is a specific stock level that triggers the need to place a new order for an item. Simply put, it’s the “time to reorder” signal. When your inventory of a particular product dips to this predetermined level, it’s your cue to replenish that stock.
An inaccurate reorder point can lead to problems like stockouts (dropping below your minimum stock level) or overstocking (holding excess stock beyond demand). Therefore, understanding and correctly calculating your reorder points is a fundamental step towards maintaining optimal stock levels, ensuring a healthy bottom line.
Note: It’s important to remember that reorder point is not the same as order quantity. While the reorder point tells you when to reorder, the economic order quantity helps determine the optimal amount to order at that time to minimize costs like carrying and ordering expenses.
A Step-by-Step Guide to Calculating Reorder Points
Calculating your reorder points might seem like a lot of math, but breaking it down into manageable steps makes it much simpler. Here’s your go-to guide:
Step 1: Dive into Your Sales Data
The foundation of accurate reorder points lies in understanding your sales history. Take a good look at your past sales data for each product. Identify trends, seasonal peaks, and any consistent patterns. This will give you a solid basis for calculating your average daily sales. The more historical data you analyze, the more accurate your predictions are likely to be.
Step 2: Pinpoint Your Lead Times
For each product you stock, determine the average time it takes for a new order to arrive once you place it with your supplier. This includes processing time, shipping, and any potential delays. It’s crucial to have a realistic understanding of these lead times, as they directly impact when you need to reorder. Keep in mind that lead times can sometimes fluctuate, so consider tracking them over time.
Step 3: Factor in Your Safety Net (If Necessary)
Decide whether you need to incorporate safety stock for each product. Safety stock is recommended if you experience significant fluctuations in demand or if your suppliers have inconsistent delivery times. You might start with a simple estimate based on experience and refine it over time as you gather more data.
Step 4: Apply the Reorder Point Formula
Once you have your average daily sales, lead time in days, and your desired safety stock (if any) for a specific product, it’s time to plug those numbers into the formula:
Reorder Point = (Daily Average Demand x Lead Time) + Safety Stock
Do this calculation for each product in your inventory to determine its unique reorder point.
Step 5: Integrate Your Reorder Points into Your System
The final step is to make sure these reorder points are actively used. Input them into your inventory management system or warehouse management system. Most modern systems can automatically track your inventory levels and alert you when an item reaches its reorder point, streamlining the purchasing process and helping you stay ahead of potential stockouts. Regularly review and adjust your reorder points as your sales patterns and lead times evolve to ensure continued optimization.
Best Practices for Managing Your Reorder Points
Calculating reorder points is just the beginning. Effective inventory management requires ongoing adjustments. Regularly review your reorder points as demand, trends, and seasons change. For fast-moving items, adjust them more frequently to stay ahead of shifts in sales patterns.
If possible, use inventory management software to automate reorder point calculations based on historical data, lead times, and safety stock levels. This reduces manual work and improves accuracy.
Keep an eye on supplier performance, as delays can affect lead times. Adjust reorder points accordingly to prevent stockouts caused by slower deliveries.
If automation isn’t available, prioritize calculating reorder points for your top-selling SKUs to minimize stockouts while keeping your process manageable.