Min-Max Inventory Calculator
Minimum and maximum levels for a simple system.
Minimum / maximum
280 / 880
at or below minimum — order now
Min-max needs no forecasting sophistication, which is why it survives where more elaborate systems go unused. Review the levels quarterly.
How the Min-Max Inventory Calculator works
Min-max is the simplest workable inventory policy: when stock falls to the minimum, order enough to reach the maximum. It needs no forecasting sophistication, which is why it survives in small operations where a more elaborate system would go unused.
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
How are min and max levels set?
Minimum equals lead time demand plus safety stock — the same figure as the reorder point. Maximum equals the minimum plus the order quantity you intend to place, typically one cycle of demand.
How does min-max differ from a reorder point system?
A reorder point system orders a fixed quantity whenever the trigger is hit. Min-max orders a variable quantity that tops back up to the maximum. Min-max adapts better when demand is uneven.
When is min-max a poor fit?
With strongly seasonal demand, where fixed levels are wrong most of the year, and with expensive items where the imprecision ties up meaningful capital. Both call for something more responsive.
How often should the levels be reviewed?
Quarterly, and after any change in demand or lead time. Stale min-max levels are among the most common sources of persistent overstock — the system keeps working perfectly toward an out-of-date target.