Key takeaways
- ROAS divides attributed revenue by ad spend.
- ROI uses net gain and can include a broader cost boundary.
- Break-even ROAS depends on contribution margin.
- Attribution settings are assumptions that can overlap across platforms.
ROAS focuses on advertising
ROAS equals attributed revenue divided by ad spend. $20,000 of attributed revenue from $5,000 of spend produces 4.0× ROAS.
The metric does not automatically subtract product cost, fulfillment, returns, agencies, creative, overhead, or tax. It describes revenue efficiency within the attribution system.
ROI uses net gain
ROI equals net gain divided by investment. A campaign ROI can include a broader set of incremental costs and contribution rather than gross revenue.
State the scope clearly. Comparing platform ROAS with full business ROI without labels creates confusion even when both calculations are mathematically correct.
Find the break-even ROAS
Break-even depends on contribution margin. If each revenue dollar leaves $0.25 before advertising, the campaign needs about 4.0× ROAS to cover ad spend before other operating costs.
Refunds, discounts, new-customer incentives, and repeat purchase behavior can change the threshold. Calculate it from the economics of the promoted products and customer segment.
Treat attribution as an assumption
Platforms can claim overlapping conversions and use different click and view windows. Incrementality may be lower than attributed revenue suggests.
Use consistent attribution for comparisons, reconcile with business-level revenue, and test holdouts or experiments where practical.
Use a metric set
Review ROAS with contribution, CAC, conversion rate, new-customer percentage, refund rate, payback, and cash flow. A campaign can improve platform ROAS while reducing total profitable growth if it shifts credit between channels.
Optimize the decision the business actually cares about rather than the easiest dashboard percentage.
Frequently asked questions
Is 4× ROAS profitable?
It depends on contribution margin, returns, fulfillment, agency and creative cost, and attribution quality. A revenue ratio alone does not prove profit.
Why can platform ROAS and total revenue disagree?
Platforms can use different click and view windows and claim overlapping conversions. Reconcile channel reports with business-level results.
Sources and further reading
These external resources provide additional context. CalcScoutHQ applies the formulas and limitations stated on this page and reviews links at publication.
- About Target ROAS bidding — Google Ads Help
Test a base, conservative, and optimistic scenario with the related calculator. Keep definitions and periods consistent between cases.
Open ROAS