Contribution Margin in Ecommerce: What ROAS Does Not Show
Contribution Margin in Ecommerce: What ROAS Does Not Show Ecommerce contribution margin is one of the most important numbers that ROAS does not show. Most operators running paid traffic know their ROAS by heart. They check it daily, optimize around it, and use it to decide whether a campaign is working. That habit is reasonable. ROAS is a useful signal. But it is incomplete in a way that can quietly damage a business if the gap is never addressed. A store can run at 3x or 4x ROAS and still generate almost no usable profit. Payment fees, platform costs, refunds, chargebacks, and the actual cost of goods all come out of that revenue figure before anything reaches the bottom line. ROAS does not capture any of that. Contribution margin does. Quick Answer Contribution margin shows how much money is left from each order after direct costs, payment fees, refunds, and ad spend. ROAS only compares revenue to advertising spend. That means ROAS can look strong while contribution margin remains to...