Lara GuevaraSupply Chain expert (Product and Service)

Reorder Timing System Recap

22 Mar 2026 · 1 min

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Lara Guevara breaks down the reorder timing system: four inputs (sell-through rate, lead time, cash position, demand forecast) feed two calculations that tell you when and how much to order. A $150K panic order that started as a $20K stockout shows what happens when emotion overrides math.

Chapters

Week 3 is done. Here's the entire reorder timing system in 60 seconds. 4 inputs before any order: sell-through rate, lead time, cash positions, and demand forecast. Miss one and you're guessing. The reorder point formula: daily rate times lead time plus safety stock. That tells you when to order. The order quantity formula is target days times daily rate minus current stocks. That tells you how much. And the lesson that ties it all together: fear is the worst planner. The $150K panic order proved it. A $20K stacked out turned into a $150K trap because someone ordered with their emotions instead of a spreadsheet. Math doesn't have feelings, use it. Next week, how one brand freed $120K using everything we've covered this month. The full case study, so follow to catch it.