Procurement Operating Library

More LineNow procurement articles for supplier communication, purchase orders, inventory math, accounting handoff, and software selection.

Showing 18 of 217 articles

Glossary9 min read·Updated

Cycle Count: Inventory Record Accuracy, Count Frequency by ABC Tier, and the IRA Formula

Cycle counting is the practice of physically counting a rotating subset of SKUs to maintain Inventory Record Accuracy (IRA) without halting operations. Formula: IRA = (1 − |Σ variance| / Σ counted units) × 100. Count frequency by ABC tier, acceptable IRA thresholds by class, and why structured receiving is a continuous cycle count for high-velocity ordered items.

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Glossary7 min read·Updated

Open-to-Buy (OTB): Formula, Worked Example, and the Execution Gap

Open-to-buy (OTB) is the dollar buying budget available for a period. Formula: OTB = Planned Sales + Planned Markdowns + Planned EOM Stock − BOM Stock − On Order. With a worked retail example, stock-to-sales ratio guidance, how OTB relates to reorder points and PAR levels, and why OTB planning requires closed-loop execution to translate the budget into purchase orders.

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Glossary7 min read·Updated

Days of Inventory on Hand (DOH): Formula, the Lead-Time Threshold, and When to Act

Days of inventory on hand is on-hand quantity ÷ daily consumption rate — the number of days before an item runs out. The critical threshold: DOH < lead time means the stockout window is open. With accounting vs. operational DOH, the safety buffer formula, decay adjustment for perishables, vertical benchmarks, and how a closed-loop procurement platform acts on DOH.

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