ROAS (Return on Ad Spend)
Revenue generated for every dollar spent on advertising.
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Definition
Return on Ad Spend (ROAS) measures the revenue generated for every dollar spent on advertising. A ROAS of 4x means every $1 of ad spend generates $4 in revenue. It is the primary metric for evaluating advertising campaign profitability.
ROAS differs from ROI in that it only considers revenue against ad spend, not total profitability. A ROAS of 4x might still be unprofitable if the product has low margins. To account for this, some teams calculate profitability-adjusted ROAS using gross profit instead of revenue.
Target ROAS varies by business model: e-commerce typically targets 3-5x, SaaS can accept 1-2x ROAS if LTV is high, and marketplaces may target 5-10x due to low take rates.
Why It Matters for Founders
ROAS determines whether your advertising is profitable and how aggressively you can scale spend. A ROAS above your break-even threshold means every additional dollar of ad spend generates profit, enabling rapid scaling.
For startups, understanding ROAS by channel and campaign enables smart budget allocation. Double down on high-ROAS channels and cut or optimize low-ROAS ones. The compounding effect of good ROAS on growth is significant.
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Formula
ROAS = Revenue from Ads / Ad SpendReal-World Example
A startup spends $5,000 on Google Ads and generates $20,000 in revenue from ad-driven customers. ROAS = $20,000 / $5,000 = 4.0x (or 400%).
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Frequently Asked Questions
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