Features

Find margin leaks. Get the action list.

MarginCaptain loads every variable cost per SKU and surfaces the products where simple reporting hides weak or negative contribution.

Fake-profitable SKU detection

Surface products that look healthy in gross margin but fail after fully loading shipping, fees, CAC, returns, fulfillment, and packaging. Flagged automatically, ranked by severity.

✓Gross margin vs. true contribution per SKU
✓Automatic fake-profitable flagging with thresholds
✓Margin gap ranking — worst leaks first

Fake-Profitable Report

SKU	Gross	Contrib.	Gap	Status
Everyday Tote	68%	5.0%	−63%	Fake-profitable
Mini Pouch	72%	−22%	−94%	Negative
Weekender Bag	58%	34%	−24%	Healthy

Margin leak analysis

For every SKU, see exactly which cost lines are eating margin — ranked by impact. Know whether it's CAC, shipping, returns, or payment fees dragging a product from profitable to break-even.

✓Per-SKU cost breakdown waterfall
✓Leak drivers ranked by dollar impact
✓Break-even CAC per SKU

Cost WaterfallEveryday Tote

Revenue

$48.00

COGS

−$15.36

Shipping

−$6.50

CAC

−$14.00

Returns

−$3.80

Fulfillment

−$4.20

Contribution

$2.41

Action recommendations

Don't just see the problem — get specific actions. Reprice with a suggested floor, cut underperformers, pause ad spend when CAC exceeds break-even, or flag bundle candidates.

✓Reprice with suggested minimum price floor
✓Flag SKUs where CAC exceeds break-even
✓Prioritized action queue by margin impact

Action Queue

Mini PouchCut or discontinue

Negative contribution at any CAC

Everyday ToteReprice to $56+

Break-even CAC at current price: $3.80

Canvas BeltPause ads

CAC ($18) exceeds break-even ($12.40)

Weekender BagKeep scaling

Strong contribution at 34%

Scenario modeling

Test what happens before you commit. Adjust pricing, CAC, shipping costs, return rates, or volume. See how each change affects true contribution across your catalog.

✓Live contribution updates as you adjust inputs
✓Save and compare named scenarios
✓Model CAC thresholds before adjusting ad spend

What-If: Everyday Tote

Current

5.0%

+15% price

18.1%

−30% CAC

13.6%

−$2 shipping

9.2%

Portfolio income statement

Roll all SKUs into a single view. Revenue, COGS, gross profit, fully loaded variable costs, contribution margin, fixed costs, and net operating income — at true contribution.

✓True contribution P&L, not just gross margin
✓Fixed cost absorption across the catalog
✓Growth viability indicators

Portfolio P&L — True Contribution

Revenue

$48,200

Cost of goods sold

($17,350)

Gross profit

$30,85064% ← Shopify shows this

Shipping + fulfillment

($8,440)

Payment processing

($1,446)

CAC

($9,640)

Returns

($2,890)

True contribution

$8,43417.5% ← this is reality

Stop scaling products that only look profitable.

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