Procurement Operating Library

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

Showing 18 of 217 articles

Glossary8 min read·Published

Weighted Average Cost (WAC): Formula, Periodic vs. Perpetual, and When AVCO Fits

Weighted average cost (WAC / AVCO) is the inventory costing method that assigns a single blended per-unit cost to COGS and ending inventory. Formula: WAC = total cost of goods available ÷ total units available. Periodic vs. moving average, worked example vs. FIFO, when WAC fits fungible goods, how landed cost distorts a WAC that uses invoice price only, and why receiving accuracy is cost accuracy in a perpetual WAC system.

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Glossary8 min read·Published

OTIF (On-Time In-Full): Formula, Benchmarks, and the Supplier Performance Gap

OTIF (On-Time In-Full) is the supplier performance metric that checks delivery timing and order completeness simultaneously. Formula: (orders on-time AND in-full / total orders) × 100. Why OTIF is stricter than fill rate or lead-time accuracy alone, buyer-side vs seller-side contexts, industry benchmarks, and how closed-loop procurement makes it measurable.

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Glossary8 min read·Updated

Slow-Moving and Dead Stock: The SLOB Problem, How to Measure It, and How Procurement Creates or Prevents It

Slow-moving inventory is stock that moves below a defined velocity threshold. Dead stock is inventory with no movement for 180+ days. Together they form SLOB — Slow-moving and Obsolete inventory. The SLOB rate formula, aging thresholds by category, industry benchmarks, the procurement decisions that create SLOB, and how closed-loop procurement surfaces it before carrying cost compounds.

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Glossary7 min read·Updated

Blanket Purchase Order (Blanket PO): What It Is, How Releases Work, and When to Use One

A blanket purchase order is a standing agreement with a supplier to purchase a defined total quantity or dollar amount over a period, drawn down through individual releases. How blanket POs differ from regular POs, the release mechanism, price-lock benefits, volume commitment risk, and how closed-loop procurement tracks open blankets against actual spend.

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