Unit Economics
What Is Gross Margin? (eCommerce Definition)
Gross margin is revenue minus cost of goods sold, expressed as a percentage. For ecommerce, COGS includes product cost, inbound freight, and duties. A 50% gross margin means you keep $0.50 of every revenue dollar before touching marketing, fulfillment, or payroll. Most CFOs treat it as a ceiling, not a scorecard.
Gross margin is the dollar amount (or percentage) of revenue left after subtracting the direct cost of producing or sourcing the product. In ecommerce, it is the first margin layer above the cost of goods sold, and the one most teams over-rely on.
How gross margin is calculated
Gross margin (dollars) = Revenue − Cost of Goods Sold (COGS)
Gross margin (%) = (Revenue − COGS) ÷ Revenue × 100
COGS for ecommerce = unit cost from supplier + inbound freight + duty + tariffs + product handling. Outbound shipping, payment fees, marketing, and returns processing are not in COGS.
Example
A DTC brand sells $1M of revenue in a month. COGS (unit cost + inbound freight + duty) is $360K. Gross margin = $1M − $360K = $640K, or 64%.
What's a good gross margin?
Composite 2026 ranges by vertical:
- Beauty / personal care DTC: 7078%
- Apparel / footwear DTC: 5062%
- Food & beverage CPG: 2842%
- Household CPG: 3848%
- Outdoor / hardgoods DTC: 5058%
Private brands typically run 200500 bps below public benchmarks at the same vertical. For the full breakdown see the 2026 eCommerce KPI Benchmark Report and DTC gross margin evolution 2020-2026.
The most common mistake
Treating gross margin as the maximum CAC ceiling. It is not, your real ceiling is CM1 (revenue minus all variable cost of goods AND fulfilment). Using gross margin as the cap routinely leads to over-spending on acquisition by 818 percentage points.
Frequently Asked Questions
is gross margin the same as contribution margin?
No. Contribution margin subtracts fulfilment, payment processing, and returns reserve in addition to COGS. See What is CM1?
what costs go into COGS for ecommerce?
Supplier unit cost + inbound freight + duty + tariffs + handling. Outbound shipping is excluded, that lives in fulfilment cost below gross margin.
why don't CFOs use gross margin as a primary KPI?
Because it overstates true profitability and obscures decisions. CM2 (after marketing) drives pricing, channel mix, and CAC ceiling. Gross margin is a starting point, not an endpoint.
Related Terms
Browse the full ecommerce finance glossary for every metric and money term a DTC operator needs.
Need a CFO to triangulate your gross margin against your real vertical comps? Talk to a CFO.