What is ROAS (Return on Ad Spend)?
Return on Ad Spend (ROAS) is a marketing metric that measures the revenue earned for every dollar spent on advertising. It is calculated as: ROAS = Total Revenue from Ads ÷ Total Ad Spend. If you spend $1,000 on ads and generate $4,000 in revenue, your ROAS is 4x (or 400%).
Why It Matters
ROAS is the primary measure of whether paid advertising is profitable. Without tracking ROAS, advertisers are spending money without knowing if it’s working. It allows for direct comparison of performance across campaigns, ad sets, and channels, and informs budget allocation decisions.
How It Works
ROAS benchmarks vary by industry and business model. E-commerce businesses typically target a ROAS of 3x–5x. Amazon sellers commonly track ROAS separately from ACOS (Advertising Cost of Sale). A higher ROAS isn’t always better — some growth-phase businesses intentionally run lower ROAS during customer acquisition to capture market share. The ‘target ROAS’ depends on your profit margins and customer lifetime value.
Real-World Example
An Amazon seller spends $500 on Sponsored Products ads in one month and attributes $2,250 in revenue to those ads. ROAS = $2,250 ÷ $500 = 4.5x. This means for every $1 spent on advertising, $4.50 in sales were generated. Whether that’s profitable depends on the product’s margin — if margins are 30%, the seller needs a ROAS of at least 3.3x just to break even.
