Here’s what the numbers actually reveal: “What’s our ROI on social?” is the wrong question. It’s two questions wearing one trench coat.
Paid social and organic social are different problems with different levels of measurability, and treating them as one number is why so many reports don’t survive a hard look from finance. This post breaks down what’s actually provable, what isn’t, and how to report on each honestly.
What paid social actually proves
Paid social behaves like any other performance channel. You set a budget, run a campaign with a clear call to action, and track cost per acquisition, return on ad spend and conversions through standard tools like UTM parameters and platform pixels.
That’s why marketers consistently rank paid social among the highest-ROI channels available to them. HubSpot’s most recent channel data puts paid social at 26% of marketers citing it as a top ROI driver, trailing only website, blog and SEO at 27%.
But “measurable” doesn’t mean “fully accurate” anymore. Privacy changes are quietly shrinking what paid attribution can actually see. Industry analysis of iOS App Tracking Transparency puts global opt-in at roughly 35%, meaning pixel-only setups are losing an estimated 20% to 40% of their attribution data. The campaigns are still running. The reporting just isn’t seeing all of what they’re doing.
There’s a bigger gap hiding underneath that. Last-click attribution, the model most dashboards default to, systematically undercounts channels that influence a purchase without capturing the final click. Marketing mix modelling research cited by Swydo found last-click attribution undervalues Meta by two to nine times and TikTok by roughly 17 times for e-commerce brands. A campaign showing $1,000 in last-click revenue may be driving closer to $17,000 in revenue that never gets credited to it.
The takeaway: paid social ROI is real and trackable, but the number your dashboard shows you is probably a floor, not a ceiling.
Organic social: still unsolved
This is where most ROI conversations quietly fall apart. Organic social doesn’t have a checkout button, a pixel firing on conversion, or a clean line from post to sale. It has likes, shares, comments and a lot of guesswork about what those actually mean.
The scale of the problem shows up in the surveys. Sprout Social’s 2025 Impact of Social Media Report, which surveyed 1,200 marketing leaders, found only 44% rate their own teams as experts at measuring social’s business impact. That’s despite 80% of those same leaders reallocating budget toward social this year. Confidence in the channel and confidence in measuring it are two separate things, and the gap between them hasn’t narrowed much.
Older, still-cited industry research found that 80% of marketers default to engagement as their primary success metric, even though 60% simultaneously list measuring ROI as a top-three challenge. Marketers know the metric they’re using isn’t the one that answers the question.
Academic research doesn’t offer a rescue here either. A peer-reviewed literature review in Springer’s marketing research series concluded there’s a lack of empirical data and no comprehensive, agreed-upon definition of what “ROI” even means for a company measuring its organic social media presence. This isn’t a tooling problem. It’s a definitional one, and no dashboard fixes that.
Why engagement passes as ROI
Engagement is easy to pull, chart, and put on a slide. Revenue attribution from organic social is none of those things. That’s the honest reason engagement metrics keep showing up in ROI reports long after most marketers stop believing they mean much.
Marketing consultant Mark Schaefer put this bluntly in a widely discussed piece for Businesses Grow, arguing there’s little to no correlation between engagement and a business’s actual revenue, conversions or loyalty, and that reporting on engagement to justify social spend doesn’t hold up as a financial argument. His distinction matters: he draws the same paid-versus-organic line as this post, noting that bottom-of-funnel paid activity is genuinely measurable, while organic thought leadership and brand-building are not, by design.
That’s not an argument for abandoning organic social. Brand awareness, customer trust and long-term demand are real outcomes; they’re just not outcomes engagement counts can prove on their own.
A pattern you’ve seen before
Social media isn’t the first channel to go through this. Banner ads followed the same arc: an early metric (click-through rate) was treated as proof of value, users adapted to the format, and the number of clicks collapsed. One widely cited industry figure puts a 1997 banner ad’s click-through rate at 44%; by 2023, the average had fallen below 0.1%, a decline attributed to “banner blindness,” the point where users learn to mentally filter out anything shaped like an ad.
Organic social’s declining reach looks like the early stage of the same curve. The easy metric (engagement, in this case) is starting to decouple from actual value, just as click-through rate did, as feeds saturate and algorithms deprioritize brand content. That’s not a reason to panic. It’s a reason to stop reporting the easy number as if it still means what it used to.
How to report your ROI honestly
There’s no universal social media ROI benchmark you can safely cite, no matter how confidently a stat is presented. Independent, non-vendor-funded figures for organic social ROI specifically are close to nonexistent; nearly every published multiple traces back to a company that sells the measurement tool. That doesn’t make those figures worthless, but it means they belong in context, not on a slide as gospel.
Here’s a more defensible way to structure the report:
- Separate paid and organic entirely. Report paid ROI using standard performance metrics (CPA, ROAS, conversions), and flag that last-click numbers likely understate true impact.
- Retire engagement as your organic headline metric. Keep tracking it, but pair it with a business outcome (branded search volume, direct traffic, assisted conversions) rather than presenting it on its own.
- Name your attribution model out loud. If a number in your report comes from last-click, say so. It changes how much weight the number should carry.
- Treat organic as a leading indicator, not a revenue line. Brand awareness and trust compound over quarters, not campaigns. Measure direction, not a dollar figure you can’t actually defend.
The numbers don’t lie
Social media ROI isn’t immeasurable, but it also isn’t one number you can borrow from a vendor report and drop into a board deck. Paid social gives you real, if incomplete, data. Organic social gives you direction, not proof. Report them that way, and you’ll survive the hard questions instead of dreading them. Start by pulling apart your next social report into those two buckets before you write a single line about “ROI.”