HOW TO CALCULATE INFLUENCER MARKETING ROI

Why Most Brands Get ROI Wrong

Most brands judge influencer campaigns by follower count. An influencer with 100K followers isn't automatically worth more than one with 10K. What matters is CPM, CPC, and engagement rate — the same metrics you'd use to evaluate any paid media campaign.

The Metrics That Actually Matter

These are the numbers you need to track for every influencer activation:

• CPM (Cost Per Mille) = (total cost / impressions) x 1,000
• CPC (Cost Per Click) = total cost / link clicks
• CTR (Click-Through Rate) = (clicks / impressions) x 100
• Engagement Rate = (engagements / reach) x 100

Real Data from Our Campaigns

Here's what our influencer campaigns actually delivered:

Industry average CPM sits at $20–$50, with CPC varying widely by niche. Across 15+ influencer activations, The Stoop consistently delivers CPMs between $4–$31 — well below the industry average of $20–$50.

How to Calculate Your Own

• Step 1: Add up total cost (influencer fees + management + ad spend)
• Step 2: Gather reach metrics (impressions, clicks, engagements) from platform analytics
• Step 3: Calculate CPM and CPC using the formulas above
• Step 4: Compare to benchmarks — industry averages and your own past campaigns
• Step 5: Factor in content reuse value — influencer content can be repurposed for ads, social, and web

When Influencer Marketing Makes Sense

Influencer marketing works best for local businesses, product launches, seasonal campaigns, and brand awareness plays. When it doesn't make sense: no tracking in place, no clear goal, or wrong audience fit. If you can't measure it, you can't improve it — and you definitely can't prove ROI.

Frequently Asked Questions