How many products should I analyse?

Start with the lines covering 80% of revenue, then add anything you suspect is unprofitable. In a catalogue of several hundred SKUs, roughly 20 products usually explain most of the contribution and about the same number explain most of the leakage. Analysing all of them at once guarantees the project never finishes.

Should I drop products with negative contribution?

Only after checking what leaves with them. If a product loses $3 per unit but shares a production run and absorbs freight that would otherwise be charged to others, removing it can raise costs elsewhere. Fix price or specification first; deletion is the last step, not the first.

What is the difference between gross margin and contribution margin here?

Gross margin subtracts only cost of goods sold. Contribution margin subtracts every variable cost, including outbound freight, payment fees, returns, and product-specific advertising. The worked example shows a 39% gross margin collapsing to 14% contribution, and the second figure is the one that pays fixed costs.

How do I handle products sold as a bundle?

Analyse the bundle as its own line rather than splitting the price arbitrarily across components. Allocating bundle revenue by list price is the least distorting method if a split is unavoidable, but the bundle usually has its own cost structure — one shipment, one payment fee — so treating it as a separate product is more accurate.

Business & Tax

Product Profitability Analysis: Finding Your Money Makers and Money Losers (2026)

Identify your top-performing products with our product profitability analysis tool. Make informed decisions to boost your business's financial health.

By FreeCalculators Editorial · Published 2026-09-01 · Updated 2026-09-04 · 4 min read · 908 words

Product profitability analysis ranks every product by the contribution dollars it generates rather than by the revenue it books. Contribution is revenue minus every cost caused by selling that product — materials, direct labour, freight, payment fees, returns, and the marketing spent to sell it. The exercise almost always reorders the list, because the biggest revenue line is frequently not the biggest profit line.

Why Revenue Ranking Misleads

Revenue measures customer activity; contribution measures what the business keeps. When margins differ widely across a catalogue, the two rankings diverge sharply, and resources follow whichever ranking management looks at.

By revenue the order is A, D, B, C, E. By contribution it is B, A, C, E, D.
Product	Revenue	Contribution margin	Contribution dollars
A	$420,000	22%	$92,400
B	$180,000	61%	$109,800
C	$95,000	68%	$64,600
D	$310,000	14%	$43,400
E	$60,000	74%	$44,400
Total	$1,065,000	33.3%	$354,600

Product D is the second largest revenue line and the smallest profit line. Product B, at 43% of D revenue, delivers more than twice D contribution. Any sales incentive built on revenue will push the team toward exactly the wrong product.

Running the Analysis in Six Steps

Pull twelve months of revenue by product to smooth seasonality; a quarter is too short for anything with a cycle.
Assign directly traceable variable costs per unit: materials, packaging, direct labour, inbound and outbound freight, payment fees.
Add product-specific costs that are not per unit: dedicated tooling, product-only advertising, certification or compliance fees.
Compute contribution dollars and contribution margin for each product, then rank by dollars.
Only then allocate shared overhead, and treat the resulting figure as a long-run signal rather than a decision rule.
Divide contribution by the scarce resource — labour hours, machine hours, shelf space — to see which products earn the most per unit of capacity.

One product, three levels of profit (2026)

                Product D: 3,100 units at $100 = $310,000 revenue
Materials and packaging: $61 per unit = $189,100
Gross profit: $120,900, a 39.0% gross margin
Outbound freight $9.40 and payment fees $3.20 per unit: $39,060
Returns at 7% of units, net cost $22 each: $4,774
Product-only advertising: $33,666
Contribution: $310,000 - $189,100 - $39,060 - $4,774 - $33,666 = $43,400
Contribution margin: 14.0% against a 39.0% gross margin

The gross margin looked acceptable. Freight, fees, returns, and advertising removed 25 percentage points before a single dollar of rent was covered. Products with high shipping weight and high return rates fail this way routinely, and a gross-margin-only report never shows it.

Allocation Traps That Distort the Ranking

What to Do With the Results

Low-contribution products are not automatically candidates for deletion. Some carry traffic, some are required to win a contract, and some absorb capacity that would otherwise sit idle. Test each one against a specific question: if this product disappeared tomorrow, which costs would actually leave, and which customers would go with it?

For external context, the IRS Statistics of Income program publishes business receipts and net income by industry code, which is the closest thing to a free structural benchmark for whether your overall margin profile is normal for your sector. It will not validate individual products, but it does tell you whether the aggregate is plausible before you start restructuring a catalogue.

Re-run the full analysis twice a year, and after any material input cost change. Contribution rankings drift faster than most owners expect.

Frequently asked questions

How many products should I analyse?: Start with the lines covering 80% of revenue, then add anything you suspect is unprofitable. In a catalogue of several hundred SKUs, roughly 20 products usually explain most of the contribution and about the same number explain most of the leakage. Analysing all of them at once guarantees the project never finishes.
Should I drop products with negative contribution?: Only after checking what leaves with them. If a product loses $3 per unit but shares a production run and absorbs freight that would otherwise be charged to others, removing it can raise costs elsewhere. Fix price or specification first; deletion is the last step, not the first.
What is the difference between gross margin and contribution margin here?: Gross margin subtracts only cost of goods sold. Contribution margin subtracts every variable cost, including outbound freight, payment fees, returns, and product-specific advertising. The worked example shows a 39% gross margin collapsing to 14% contribution, and the second figure is the one that pays fixed costs.
How do I handle products sold as a bundle?: Analyse the bundle as its own line rather than splitting the price arbitrarily across components. Allocating bundle revenue by list price is the least distorting method if a split is unavoidable, but the bundle usually has its own cost structure — one shipment, one payment fee — so treating it as a separate product is more accurate.

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