Full Definition
Return on Ad Spend (ROAS) = Total Revenue from Ads ÷ Total Ad Spend. If you spend ₹50,000 on Google Ads in a month and your ads directly generate ₹2,00,000 in revenue, your ROAS is 4 (often written as 4x or 400%). ROAS is the paid advertising world's equivalent of ROI. The critical difference: ROAS only measures revenue against ad spend — it doesn't account for the cost of goods, staff, or other operating expenses. A ROAS of 4 might be highly profitable for a software company (selling a ₹4,000 digital product with near-zero delivery cost) but unprofitable for a manufacturer with high production costs. What ROAS should you aim for? It depends on your profit margin. A rough rule: if your gross margin is 30%, you need a ROAS of at least 3.3x just to break even on ad spend (1 ÷ 0.30 = 3.33). Anything above that is profit from advertising. Common ROAS benchmarks by industry: - E-commerce: 4–8x - B2B services: 3–5x - Lead generation: Often measured as Cost Per Lead instead of pure ROAS Smart Bidding in Google Ads lets you set a target ROAS, and Google's algorithm automatically adjusts bids across auctions to hit that target. Actionable tip: Before setting a target ROAS in Google Ads, calculate your break-even ROAS first: 1 ÷ your gross margin. Set your target above that threshold, not an arbitrary number like '5x' that may be unachievable in your market.