Profit margin calculator for ecommerce operators

Understand gross and net margin behavior per order so promotions, fee changes, and shipping policy decisions stay profitable.

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Frequently asked questions

Why does margin shrink at scale?

Rising CAC, higher refund rates, and blended discounting often compress margin over time.

Which margin should I optimize?

Optimize net contribution margin first, then tune top-line growth within safe CPA limits.

Get new tools + updates

We’ll email you when new calculators drop.

Privacy: We only use this for updates and tool planning. No third-party selling.