Operations
Contribution Margin (CM1, CM2): How to Calculate Vending Machine Profitability
Term from the vending glossary
This article was created with AI assistance and checked automatically. A human review before publication is not documented. A contribution margin is revenue minus variable costs, showing how much remains to cover fixed costs and then contribute to operating profit. In a multi-stage calculation, CM1 subtracts variable costs from net sales, while CM2 also subtracts product-specific fixed costs.
Applying contribution margin to vending
For a vending operator, calculate the contribution margin per sale by subtracting variable costs from net sales revenue. Variable costs may include the product’s purchase cost and transaction fees that vary with each sale. The remaining amount contributes to fixed costs such as location rent, depreciation, service, or recurring fees. The contribution margin is not profit until the fixed costs have also been covered.
CM1 is net sales revenue minus variable costs. CM2 subtracts product-specific fixed costs from CM1. The official formula sheet from Berufsschule 4 in Nuremberg also defines the next stages: CM3 subtracts product-group fixed costs, and operating profit follows after company-wide fixed costs are deducted. These stages help operators see which costs are attached to an individual product, a product group, or the business as a whole. (Formula sheet, page 2)
Use the calculation to compare products or locations on the same basis and period. Keep one-off and shared fixed costs visible in the appropriate stage; subtracting them too early can hide the contribution of individual products. To find the break-even quantity, divide fixed costs by the contribution margin per sale, provided that the margin is positive and the assumptions used for the period remain applicable.