Marketing ROI (MROI) vs Return on Ad Spend (ROAS)
ROAS measures revenue generated per dollar of ad spend; marketing ROI measures profit generated per dollar of total marketing investment. ROAS is a channel-level efficiency metric; marketing ROI is a business-level profitability metric. A campaign can have strong ROAS but poor marketing ROI if underlying costs are not accounted for.
At a Glance
Marketing ROI (MROI)
Net profit from marketing relative to marketing costs
Return on Ad Spend (ROAS)
Revenue generated for every dollar spent on advertising
Key Differences
- ROAS uses revenue in the numerator; marketing ROI uses profit (revenue minus costs).
- Marketing ROI accounts for all marketing costs; ROAS only uses ad spend.
- A ROAS of 4x might mean breaking even if COGS is 75%; marketing ROI reveals this clearly.
- ROAS is a leading indicator; marketing ROI is a lagging indicator of true campaign profitability.
When to Use Each
Use Marketing ROI (MROI) when…
Use marketing ROI when evaluating the full cost of a campaign including agency fees, content production, and overhead — not just media spend.
Full Marketing ROI guide →Use Return on Ad Spend (ROAS) when…
Use ROAS to optimise ad channel mix in real time. It is fast to calculate, easy to act on, and the standard metric in ad platforms.
Full Return on Ad Spend guide →Formulas
MARKETING ROI (MROI)
Marketing ROI = ((Revenue - Marketing Cost) / Marketing Cost) × 100
((Gross Profit - Marketing Cost) / Marketing Cost) × 100RETURN ON AD SPEND (ROAS)
ROAS = Revenue Attributed to Ads / Total Ad Spend
Campaign Revenue / Campaign Ad SpendCharts
Marketing ROI (MROI)
Return on Ad Spend (ROAS)