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Margin Erosion

Margin erosion refers to a sustained reduction in profit margins over time, resulting from costs increasing faster than revenues, pricing pressure preventing revenue growth in line with costs, or adverse shifts in product or customer mix. Margin erosion is a critical management concern because it can be gradual and difficult to detect until it has become significant: each element — a small price reduction, an incremental cost increase, a shift toward lower-margin products — may be individually immaterial but collectively cause meaningful deterioration in profitability.

Why This Matters

Margin erosion is one of the most insidious financial threats to a business because it accumulates gradually and is easy to dismiss at each individual step. Organisations that monitor only aggregate profitability often discover significant margin deterioration only when it has become material, by which point recovering to historical margin levels may require significant pricing or cost restructuring actions. Tracking disaggregated margins over time — by product, customer, and channel — enables early detection and intervention before cumulative erosion becomes a structural problem.

Where This Fits

This term sits within the Performance & Profitability area of Performance & Control.

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