Operator Ecosystem
Contribution margin and break-even for a vending machine
Term from the vending glossary
The contribution margin is sales revenue minus variable costs per sale and is available to cover fixed costs. The break-even point shows the sales volume or revenue required to cover total costs in full.
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Why do both metrics matter to vending operators?
For a vending machine, the contribution margin shows how much each sale contributes towards rent, depreciation, the site, maintenance or basic fees. To calculate the contribution margin per unit, subtract the variable costs per sale from the net selling price. These may include, for example, the cost of goods and transaction costs that vary with volume. The University of Göttingen describes the contribution margin as the difference between price and variable costs and explains that it contributes towards covering fixed costs.
The break-even point is calculated by dividing fixed costs by the contribution margin per unit. Haufe’s break-even analysis uses the formula: Break-even quantity = fixed costs / contribution margin per unit. A calculation example with explicitly stated assumptions: net selling price EUR 2.50, variable costs EUR 1.10 and monthly fixed costs EUR 700. The contribution margin is EUR 1.40 per sale. The break-even point is therefore 500 sales per month, because EUR 700 / EUR 1.40 = 500. At 600 sales, these assumptions would result in an operating profit of EUR 140 before other costs not included in the calculation. The figures are not market prices; they are provided for illustration only. A comparable calculation method is also shown in a worked example from the Hamburg Chamber of Commerce.