GlossaryEN1 min readUpdated: Jun 18, 2026

Uncertainty Buffer

When a freight forwarder plans for 500 units and demand jumps to 620, an uncertainty buffer is what stands between the plan and a stockout.

Last updated: 18 June 2026Published: 19 June 2025

Source: https://en.wikipedia.org/wiki/Safety_stock

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Logistics Concept

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When a freight forwarder plans for 500 units and demand jumps to 620, an uncertainty buffer is what stands between the plan and a stockout. An uncertainty buffer is additional inventory or time allowance held deliberately above forecast requirements to absorb unplanned demand swings, supply failures, or shipment delays. Buffer size is calibrated against historical variance and target service levels: a larger buffer cuts stockout risk but increases inventory holding costs. Uncertainty buffers are a standard risk management tool in supply chain planning, not a sign of poor forecasting. They differ from statistically derived safety stock in that they can also take the form of a flat time cushion in production or procurement schedules.

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