Gross Margin Percent Formula
How apparel brands calculate gross margin percent, the channel benchmarks it sits against, and why it is the result rather than the lever.
What Gross Margin Percent measures
Gross margin percent is the share of net sales that remains after cost of goods sold. It is the top-level P&L view of the merchandising operation.
Gross Margin % = (Net Sales − COGS) ÷ Net Sales × 100It is closely related to MMU but not identical — gross margin includes inbound freight, duty, and sometimes occupancy depending on GAAP interpretation; MMU is a merchandising-team view that typically excludes those.
Worked apparel example
A brand recorded $1.2M in net sales and $540K in COGS for a season.
Gross Margin % = ($1.2M − $540K) ÷ $1.2M = 55.0%
Strong for DTC apparel. The number gets reported to the board; but the operational levers — IMU, markdown, return rate, cost overages — are what the merchandising team actually pulls.
55.0% gross margin is strong for apparel at scale.
Benchmark ranges
Failure modes we see
Gross margin goal with no operational decomposition. Leadership sets "55% gross margin" as a goal. Merchandising hits 51%. Nobody can attribute the 4-point miss to specific styles, markdowns, or cost overages. The only response is "try harder next season."
How RetailNorthstar handles gross margin
Gross margin decomposes live into its drivers: IMU on the buy, markdown percent, return rate, landed cost variance. Every point of gross margin miss traces to a specific category × style × cause.
Related formulas
- Maintained Markup — the merchandising-team view
- COGS — the cost input
- Initial Markup — the starting margin
See gross margin decomposed live — every point traces to the decision that caused it.
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