Gross Margin Percent Formula
How apparel brands calculate gross margin percent, the channel benchmarks, and why it is the result — not 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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