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Haberler

The true cost of lost volume goes beyond lost sales

Published on October 12, 2026
The true cost of lost volume goes beyond lost sales

In August, industrial production fell 1.9% year on year and 1% month on month. The decline was uneven: capital goods fell 5.1% annually and non-durable consumer goods 4.1%, while high-tech production grew 14.5%.

Reading this simply as “we’ll sell less” misses the cost impact. The real issue: when production falls but fixed costs remain unchanged, each remaining unit becomes more expensive to produce.

Consider a Sellf hypothetical: a non-durable goods manufacturer has a unit cost of TRY 100, including TRY 30 in allocated fixed costs. If volume falls 4.1%, with total fixed costs and variable cost per unit unchanged, fixed cost per unit rises approximately 4.3%. Total unit cost reaches TRY 101.28—approximately 1.3% higher. At unchanged prices, profit falls TRY 1.28 per unit. This is a scenario calculation, not industry data.

We build the plan around three questions:

  • Cost: Which expenses remain unchanged as volume falls?
  • Margin: At what volume do we fall below target profitability?
  • Price: What happens if passing costs through further reduces demand?

For Sellf, growth engineering means connecting volume forecasts to margin thresholds.

Do you know the critical volume threshold for your fixed-cost base?

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