Cost structure refers to the composition and relative proportions of the different types of costs incurred by a business — fixed costs, variable costs, direct costs, and overhead — and how these change in response to changes in business activity or scale. Understanding cost structure is fundamental to financial planning, pricing decisions, and operational analysis: a business’s sensitivity to revenue changes, its break-even point, and its margin profile under different volume scenarios are all determined by how its costs are structured.
Why This Matters
Cost structure is the foundation of operational leverage. Businesses with high fixed cost proportions are more sensitive to revenue fluctuations — they generate outsized profit improvements when revenue grows but face disproportionate margin pressure when revenue falls. Understanding cost structure enables management to model the financial consequences of different operating scenarios, make informed build-versus-buy decisions, and assess the profitability implications of changes in product mix or business volume.
Where This Fits
This term sits within the Performance Analysis area of Performance & Control.
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