Free Ecommerce Contribution Margin Calculator

○ Fill in your SKUs below. Dashboard updates live as you type.

Real Monthly Profit — after returns, COGS, fees & ads

Annual: $0 · Blended CM: — · Net Revenue: $0

NO DATA

SCALE

OPTIM

REVIEW

KILL

SCALE ≥ 30%push ads

OPTIMIZE 15–30%tune levers

REVIEW 5–15%investigate

KILL < 5%stop the bleed

Thresholds

SCALE ≥ %

OPTIMIZE ≥ %

REVIEW ≥ %

category presets ⓘ

Your SKUs

Edit any cell — dashboard updates live. All-in Cost = product + packaging + fulfillment. Fees % = platform + processing (Shopify ≈ 6%, Amazon ≈ 17%, TikTok ≈ 10%).

SKU	Channel	Price $	Units/mo	Return %	All-in Cost $	Fees %	Ad Spend $/mo	CM $/mo	CM %	Decision

+ Add SKU

⚡ Scenario Simulator

Pick a SKU. Change one lever. See the decision flip in real time.

Select SKU

Selling Price—

Raising price 5–10% often lifts CM more than cutting COGS.

Monthly Ad Spend—

Cutting ads on a KILL SKU is the fastest turnaround lever.

Return Rate—

A 10pp return drop can move a KILL to OPTIMIZE on its own.

DECISION — → —

BASE

Net Revenue—

CM %—

CM $ / month—

SCENARIO

Net Revenue—

CM %—

CM $ / month—

12-Month Cash Impact

—

Pick a SKU and type a value in any lever to simulate.

📊 Monthly Snapshots

Save today's state. Compare month over month. Stored locally in this browser.