What Is Contribution Margin?

Contribution margin is what is left from an order after you subtract its variable costs: product cost, platform fees, affiliate commission, payment processing, and fulfillment, but before fixed overhead like salaries and rent.

It is the truest per-order profit signal for a TikTok Shop business, because every cost it includes scales directly with each sale.

Start with the order value, then subtract product cost (COGS), the TikTok Shop referral fee, affiliate commission, fulfillment, and processing. What remains is your contribution margin, in dollars or as a percentage of the order.

Example: a $40 order with $12 product cost, a referral fee, 20% commission ($8), and $5 fulfillment leaves a contribution margin in the low teens of dollars before overhead.

Contribution margin is the number that tells you whether growing GMV actually makes money. A program can scale sales while shrinking contribution margin into the red. It is also the ceiling on what you can spend to acquire each order.

Brands model contribution margin per SKU and per order before setting commission rates and ad budgets, so they know the floor below which a sale stops being worth making.

Hubfluence helps you connect commission and creator spend to the sales they drive, so you can keep an eye on whether your highest-volume creators are also your most margin-positive.