Plain definition
Unit contribution is selling price less the variable costs that change when one more unit is sold or served. It is the amount available to cover fixed costs and then profit. It is not the same as gross revenue, and it should not include a fixed cost merely because it has been allocated per unit.
The contribution can change with price, commission, returns, delivery, payment fees, material use, and service intensity. A contribution calculation must describe the unit and the relevant volume range.
Illustrative example
Monetary examples use Saudi riyals (SAR). The same principles apply in other currencies.
Suppose a meal kit sells for . Ingredients, packaging, payment fees, and delivery total for each kit, so unit contribution is . A discounted order at still adds if the same variable cost applies and capacity is spare; it may be sensible for a defined reason, but it does not cover the normal contribution target.
If a delivery slot is already full, accepting the discount may displace a contribution order. The relevant comparison is then the contribution forgone, not merely whether the discount price exceeds ingredient cost.
| Selling price per meal kit | |
|---|---|
| Variable cost per meal kit | |
| Unit contribution |
Contribution supports short-run decisions, but repeated discounts can change customer expectation and capacity needs.
Why it matters
It makes the effect of volume and pricing explicit before aggregate sales conceal whether each additional unit helps.
Practical consequence
List the variable costs per unit from operational evidence and separate them from fixed cost. Test price, returns, commissions, and capacity constraints. Use the result to set floor-price guardrails for defined circumstances, while checking that the full business still covers fixed costs and investment.
Try your own numbers
See the unit volume needed to cover fixed costs, and the planned profit at a chosen volume.
Break-even