What Is Minimum Stock and How Do You Set It?
Minimum stock is the floor you should never drop below. Learn the minimum stock formula, the min/max method, and how it differs from safety stock and the reorder point.
By The Juvo team — 11 August 2026
TL;DR: Minimum stock is the floor level you should never fall below. A common formula is safety stock + (daily sales x lead time). Hit the minimum and it is time to reorder. Paired with a maximum, it becomes the min/max method: reorder at the min, refill up to the max.
Safety stock, reorder points and average stock each answer one question. Minimum stock ties them into a simple rule anyone on the floor can follow: do not let this line drop below here. It is the plain-language version of stock control, and it works just as well for an online shop as for a business serving trade accounts.
What is minimum stock?
Minimum stock is the lowest quantity of an item you want to hold before new stock arrives. Inventory Planner describes it as the level that keeps your operations running without a gap, so you can meet demand while a replenishment order is on its way. Drop below it and you risk a stockout; the minimum is the line that warns you to act.
How do you calculate minimum stock?
A widely used formula is: minimum stock = safety stock + (daily run rate x lead time). As eTurns sets out, the daily run rate is your average daily sales, the lead time is how long a refill takes, and the safety stock is your buffer for the unexpected. So the minimum covers normal sales during the wait, plus a cushion on top.
For example, if you sell 8 units a day, your lead time is 5 days, and you hold 20 units of safety stock, your minimum stock is 20 + (8 x 5), which is 60 units. When stock reaches 60, you reorder.
Minimum stock vs safety stock vs reorder point
These three get mixed up, but they are distinct. Safety stock is the buffer quantity for bad weeks. The reorder point is the trigger level that says order now. Minimum stock is the practical floor you set for a line, and in many simple systems it lands at the same number as the reorder point, because both mark the moment to replenish. The difference is mostly in language: reorder point is the technical term, while minimum stock is the everyday floor a stockroom works to. Safety stock, by contrast, sits underneath both as the reserve you hope never to touch.
How does the min/max method work?
Minimum stock is most useful when paired with a maximum. eTurns explains the min/max method as setting a lower and an upper limit for each item: when stock falls to the minimum, you reorder, and you refill up to the maximum. This keeps every line inside a sensible band, enough to serve demand at the bottom, capped at the top so you do not tie up cash in excess stock. The maximum is often set as a multiple of average sales to avoid overstocking.
When does the min/max method fall short?
Min/max is simple, which is its strength and its weakness. ABC Supply Chain notes that fixed min and max levels work well when demand and lead times are steady, but can leave you short once sales swing or deliveries slow down. The fix is to recalculate the levels as sales and lead times move, rather than setting them once and forgetting them. Tying the minimum to a properly sized safety stock keeps it honest.
Should you set minimum stock per product or per group?
For a small range, setting a minimum on each line is fine. Across a deep catalogue it is quicker to group products that behave alike, by sales speed or value, and set a rule for each group, then fine-tune the lines that matter most. Fast, high-value items deserve their own careful minimum, while slow or low-value ones can share a simpler rule. This keeps the work manageable without leaving your important lines on a rough setting that risks a stockout or ties up cash.
Setting min/max across your catalogue
Setting minimum levels for a handful of lines is straightforward. Doing it across a deep catalogue, and keeping each one current, is a bigger task, and stale minimums quietly cause both stockouts and overstocking. A logistics partner that tracks every receipt and dispatch in real time gives you the live figures each minimum depends on. Juvo stores your goods across a French warehouse network and shows stock levels through a single platform, so a line hitting its floor is visible at once. Acting on those floors day to day is part of ongoing stock management.
Want minimum levels that reflect real, live stock? Talk to Juvo about storage and stock management for your range.
Frequently asked questions
What is minimum stock? Minimum stock is the lowest quantity of an item you want to hold before fresh stock arrives. Reaching it is the signal to reorder, so you avoid running out while a replenishment order is on its way.
What is the minimum stock formula? A common formula is minimum stock = safety stock + (daily run rate x lead time). It adds your buffer to the sales you expect during the supplier’s lead time, giving the floor at which you should reorder.
Is minimum stock the same as safety stock? No. Safety stock is the buffer held for demand spikes and delays. Minimum stock is the floor that triggers a reorder, and it usually includes safety stock plus the demand expected during lead time.
What is the min/max method? The min/max method sets a lower and an upper stock limit for each item. You reorder when stock hits the minimum and refill up to the maximum, keeping each line within a controlled range.
How often should I review minimum stock levels? Review them whenever demand or supplier lead times change, and at least each season. Fixed levels left unchanged can cause stockouts when sales rise and overstocking when they fall.