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What is Return on Ad Spend (ROAS)?
Return on ad spend (ROAS) measures the revenue earned for every dollar spent on advertising. It’s a direct indicator of paid media efficiency.
Why Return on Ad Spend matters?
ROAS is the go-to metric for measuring campaign profitability. It helps decide whether to scale, optimize, or pause ads. In ecommerce, ROAS needs to be viewed alongside profit margins, high ROAS with low margins may still be unprofitable.
How Return on Ad Spend works?
ROAS = (Revenue from Ads ÷ Ad Spend). For example, $20,000 revenue from $5,000 in ad spend equals a 4.0 ROAS. Segmenting by campaign, audience, and channel helps identify the strongest performers.
Example in ecommerce
A jewelry brand targets a 5.0 ROAS on search ads. One ad group hits 7.2 ROAS; another is at 3.1. They reallocate budget to the higher performer, increasing overall efficiency.
Common mix-ups
ROAS is not ROI. ROI factors in all costs, not just ad spend.
Best practices
- Track ROAS by channel and campaign.
- Factor in gross margin when evaluating ROAS.
- Use attribution models that fit your sales cycle.
- Adjust bids based on ROAS targets.
- Avoid optimizing for ROAS alone, balance with volume.
- Test new creatives to improve ROAS.
- Monitor ROAS trends for early signs of fatigue.
Industry benchmarks
- Many ecommerce brands target 3.0-5.0+ ROAS for profitability.
Related terms
Related article
ROAS Tracking in GA4: A Step-by-Step Guide to Measuring Campaign Success
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