For Shopify brands with 50–500 SKUs
Shopify shows gross profit. MarginCaptain loads shipping, fees, CAC, returns, and fulfillment per SKU — and finds the products that are secretly leaking margin.
7-day free trial. Plans start at $29/month.
$48.00
Gross margin
68% ($32.64)
True contribution
5.0% ($2.41)
$22.00
Gross margin
72% ($15.84)
True contribution
-22.3% (-$4.90)
1 in 4
SKUs are fake-profitable in the average catalog
$4.20
median hidden margin leak per unit
< 5 min
from CSV upload to full margin audit
The Problem
Shopify's profit reports show gross margin — revenue minus COGS. That number looks great. But it ignores shipping, payment fees, CAC, returns, packaging, and fulfillment.
The result: you scale products that look like winners but are actually breaking even or losing money after all costs are loaded.
That's a fake-profitable SKU. And most brands have more of them than they think.
| Line item | Amount |
|---|---|
| Sale price | $40.00 |
| COGS | -$12.00 |
| Gross profit70% — looks great | $28.00 |
| Shipping | -$7.00 |
| Payment fees | -$1.50 |
| CAC | -$11.00 |
| Returns allowance | -$2.00 |
| Packaging | -$1.00 |
| Fulfillment | -$3.00 |
| True contribution6.3% — barely alive | $2.50 |
What MarginCaptain does
Products that look healthy in gross margin but fail after loading shipping, fees, CAC, returns, and fulfillment. Flagged automatically by severity.
For every SKU, see exactly which costs are eating margin — ranked by impact. Know whether it's CAC, shipping, returns, or fees dragging you down.
Get specific actions per SKU: reprice with a suggested floor, cut underperformers, pause ad spend when CAC exceeds break-even, or flag bundle candidates.
Model pricing changes, CAC shifts, and volume scenarios before committing. See how each change affects true contribution across your catalog.
Export your products from Shopify, upload the CSV, and add your real costs. Full margin audit in minutes, not weeks of spreadsheet work.
How it works
Export from Shopify or enter manually. Add your real shipping, fulfillment, CAC, return rates, and payment processing costs.
MarginCaptain loads all variable costs per SKU and flags products where simple reporting masks weak or negative contribution.
Know exactly which SKUs to reprice, cut, bundle, or stop scaling — and by how much. Prioritized by margin impact.
Why not just use Shopify reports?
| Cost line | Shopify Reports | MarginCaptain |
|---|---|---|
| COGS | Yes | Yes |
| Shipping per SKU | — | Yes |
| Payment processing | — | Yes |
| CAC per SKU | — | Yes |
| Returns allowance | — | Yes |
| Fulfillment costs | — | Yes |
| Packaging | — | Yes |
| Fake-profitable detection | — | Yes |
Upload your Shopify data. Find your margin leaks in minutes.