ROAS formula vs ROI formula (and which one to report)
ROAS = Revenue from Ads ÷ Ad Spend
ROI = (Revenue – Total Cost) ÷ Total Cost
The difference matters: ROAS uses revenue (top line) and only ad spend (one cost). ROI uses profit (revenue minus all costs) and total cost (ads + COGS + ops). A campaign can hit 4× ROAS and still lose money if margins are thin.
Default rule: Report ROAS to media buyers and channel leads (it's the metric they directly control). Report ROI to CFOs and execs (it's the metric the business actually runs on). Use the ROI calculator when you need the full-business view.
What is a good ROAS by industry in 2026?
| Industry | Floor (break-even) | Healthy | Strong |
|---|---|---|---|
| DTC ecommerce (apparel, beauty) | 2.0× | 3.5× | 5×+ |
| Subscription / SaaS | 1.5× | 3× | 6×+ (long LTV) |
| Lead gen | varies | $50–$200 per lead | same |
| High-margin DTC (skincare, supplements) | 2.5× | 4× | 7×+ |
| Low-margin retail | 4× | 6× | 10×+ |
| B2B (long sales cycle) | varies | multi-touch payback under 12 months | under 6 |
"Good ROAS" = above your break-even multiple. A 3× ROAS in low-margin retail is failure; in SaaS with 80% margin and 24-month LTV, 1.8× ROAS is excellent.
Why your reported ROAS is usually wrong (attribution, gross vs net, view-through)
Three sources of silent ROAS distortion:
- Attribution windows differ. Meta defaults to 7-day-click + 1-day-view. Google defaults to data-driven. TikTok defaults to 7-day-click + 1-day-view. The same conversion can be claimed by all three platforms — sum them up and your reported ROAS double-counts.
- Gross revenue vs net revenue. Most platforms report gross order value before refunds, returns, and gift-card use. Net revenue can be 15–30% lower; ROAS shrinks proportionally.
- View-through credit. Meta and YouTube count conversions where the user saw an impression but didn't click. Removing view-through often cuts reported ROAS 20–40%.
The fix: build a unified reporting view (GA4 + CRM + ad platforms) that picks one attribution model and uses it consistently across channels.
How to lift ROAS without lowering spend (5 levers)
- Lift CTR with creative. Same CPM × higher CTR = lower CPC = same conversions for less money. ROAS rises mechanically.
- Lift conversion rate. Landing-page LCP, message match, and friction removal. ROI calculator models the impact.
- Lift average order value. Bundles, free-shipping thresholds, and post-purchase upsells. AOV moves directly into the ROAS numerator.
- Reduce return / refund rate. Better product-page expectations cut returns 10–20%. Net ROAS rises without spend changing.
- Shift mix toward retargeting. Retargeting ROAS is 3–5× prospecting. Shifting 10% of budget downstream lifts blended ROAS 15–25%.
ROAS targets in iOS post-ATT and DMA reality
Two regulatory shifts changed ROAS measurement in 2025–26:
- iOS App Tracking Transparency (post-ATT). Most iOS users opt out of cross-app tracking. Modeled conversions fill the gap, but with 15–30% under-reporting on Meta and TikTok. Reported ROAS understates real ROAS by a similar margin.
- EU Digital Markets Act. First-party data sharing restrictions limit what Meta, Google, and TikTok can pass between properties. EU campaign ROAS is reported with similar 10–25% under-counting.
The practical adjustment: track post-purchase survey data ("how did you hear about us?") and triangulate against in-platform reported ROAS. If both say the campaign works, trust it. If only one does, dig deeper before scaling.
Frequently asked questions about ROAS Calculator
Is ROAS the same as ROI?
No. ROAS divides revenue by ad spend. ROI divides profit by total investment, including non-media costs such as fulfillment and product cost.
What is a healthy ROAS for ecommerce?
Most ecommerce brands target ROAS between 2x and 6x, with brand campaigns lower and retargeting campaigns higher.
Should I scale a campaign with high ROAS?
Scale gradually. ROAS often falls during scaling because new audiences convert at a lower rate than warm segments.
How do I read ROAS in subscription businesses?
Use ROAS based on first-payment revenue plus expected retention value, not first-order revenue alone.
Why does ROAS differ from in-platform reporting?
Platform reporting uses last-click or modeled attribution. Real ROAS often reflects multi-touch and external traffic that platforms cannot see.