Which Products Are Actually Making You Money?
Understand Product Profitability, Contribution Margins, and Where to Focus Your Business Resources
Your Best-Selling Product Might Not Be Your Most Profitable
Imagine running a business with several popular products.
One product sells hundreds of units every month. Another sells fewer units but earns a higher contribution from each sale.
Which one deserves more attention?
At first glance, the best-selling product seems like the obvious winner.
But sales volume doesn't tell you everything.
A product may generate impressive revenue while consuming substantial materials, labor, or production time. Another may sell less frequently but make better use of your limited capacity.
The question isn't simply which product sells the most. It's which products contribute the most value to your business.
1. Revenue, Contribution, and Profit Are Different
When comparing products, it's important to understand three different measures.
Product Revenue
The money generated from selling a product.
Product Revenue = Selling Price × Units Sold
Revenue shows the scale of sales, but it doesn't tell you how much remains after costs.
Contribution per Unit
The amount remaining after subtracting variable cost per unit from the selling price.
Contribution per Unit = Selling Price − Variable Cost per Unit
This amount helps cover fixed operating costs and, once those are covered, contributes toward operating profit.
Total Product Contribution
The contribution generated by a product across all units sold.
Total Product Contribution = Contribution per Unit × Units Sold
A product with a lower contribution per unit can still generate substantial total contribution if it sells in high volumes.
However, that doesn't necessarily make it the best product to prioritize when capacity is limited.
2. Why Production Time Changes the Picture
Suppose two products each generate $10 in contribution per unit.
Product A takes 30 minutes to produce.
Product B takes 2 hours.
Although their contribution per unit is identical, Product A generates more contribution for each production hour used.
Contribution per Production Hour = Contribution per Unit ÷ Hours Required per Unit
This measure can help you compare products when production time is a meaningful constraint.
It doesn't automatically tell you which product to discontinue or grow. Customer demand, quality, operational limitations, and other business considerations still matter.
3. A Product Comparison That Changes the Decision
Imagine a business selling three handmade products.
Each product has a different selling price, variable cost, monthly sales volume, and production time.
We'll compare their revenue, contribution per unit, total monthly contribution, and contribution per production hour.
The goal is to understand why the product with the highest sales revenue may not be the strongest option when production capacity is limited:
