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Price increase calculator

How much of a price increase survives lost sales? Compare contribution margin and the volume loss you could absorb.

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A service business example

An agency raises the price of a recurring service package. How much volume could it lose without reducing contribution?

The starting values are sample data. Replace them with your own numbers.

0–1000 %
0–100 %

Your calculation

Adjust the inputs, then calculate your result.

How the math works

Contribution = (price − variable cost per unit) × units. New volume = current volume × (1 − volume loss / 100). The maximum volume loss compares contribution per unit before and after.

Volume loss is your assumption, not a forecast. Variable cost per unit and fixed costs stay unchanged. Contribution means revenue minus variable costs; it is not profit.