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Free Margin Calculator

Calculate return-adjusted contribution margin for one SKU. See if it's SCALE, OPTIMIZE, REVIEW, or KILL — in seconds.

SKU inputs

Selling Price per unit, ex-VAT

Units per Month

Return Rate 10pp drop can flip KILL → OPTIMIZE

All-in Cost product + packaging + fulfillment

Platform Fees platform + payment processing

Monthly Ad Spend cutting ads on KILL is the fastest lever

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Fill in Selling Price, Units, All-in Cost, and Platform Fees to see your verdict.

How we calculate

Return-adjusted contribution margin = net revenue (after returns) minus COGS, channel fees, and ad spend. Not gross margin. Not ROAS. Auditable arithmetic.

Net Revenue = Price × Units × (1 − Return%)
CM $ = Net Revenue − (All-in Cost × Units) − (Net Revenue × Fees%) − Ad Spend
CM % = CM $ ÷ Net Revenue × 100

Decision	CM% Threshold	Guidance
SCALE	≥ 35%	Push inventory and ads
OPTIMIZE	20–35%	Margin exists — tune the levers
REVIEW	10–20%	Investigate before next reorder
KILL	< 10%	Stop the bleed

Read the full methodology →

This is one SKU. Clarim runs your entire catalog.

Upload a CSV and Clarim classifies every SKU × Channel combination into SCALE / OPTIMIZE / REVIEW / KILL — with board-ready PDF, Word, and Excel exports.

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