Calculating ROAS for E-commerce
E-commerce ROAS measures how effectively your ad spend drives online sales. The basic formula is: ROAS = Total Revenue from Ads / Total Ad Spend. However, for e-commerce, you should also track Profit ROAS = (Revenue − COGS) / Ad Spend, which accounts for cost of goods sold. For example, if you spend $3,000 on ads, generate $15,000 in revenue with 40% COGS ($6,000), your revenue ROAS is 5.0x but your profit ROAS is 3.0x ($9,000 / $3,000). Profit ROAS gives a more realistic picture of campaign viability for online stores.