ROAS vs ROI: What’s the Difference and Which One Should You Use?

ROAS and ROI are related but they answer different questions. ROAS measures attributed revenue against ad spend. ROI evaluates profit relative to an investment. That difference matters whenever a campaign looks strong inside an ad platform but weak in the P&L.

ROAS measures media efficiency

If a campaign spends $1,000 and reports $3,000 in attributed revenue, its ROAS is 3.0x. That makes ROAS useful for comparing campaigns, channels, audiences and creative, but it does not automatically include COGS, shipping, payment fees, refunds or overhead.

ROI looks at profit

ROI asks whether the investment produced profit after the relevant costs are included. A campaign can therefore show a healthy ROAS and still deliver weak ROI when product margins are thin.

Use breakeven ROAS as the bridge

Your breakeven ROAS connects media performance to unit economics. Once you know the ROAS where contribution profit covers advertising, a platform ROAS becomes much easier to interpret.

Example: same ROAS, different business result

Two brands can both report 3.0x ROAS. A brand with a 60% contribution margin may have meaningful profit left after ads, while a brand with a 25% margin may be near break-even.

Which metric should you use?

Use ROAS to steer paid media and ROI to evaluate the wider investment. In practice, teams often use ROAS and CPA for daily optimization and contribution profit or ROI for business-level decisions.

Frequently asked questions