How to compare organic and paid social results fairly

Key takeaways

To compare organic and paid social fairly, use full costs on both sides, the same time window, the same definition of a result and your own records of enquiries by source. Platform reports show paid results generously and organic results poorly. A fair comparison often finds both working, at different speeds.

• Use full costs: time, fees, content and ad spend.
• Use the same time window, ideally 3 months.
• Count enquiries from your own records, not platform claims.
• Expect paid to look faster and organic to look slower.

Why are organic and paid hard to compare?

They are hard to compare because paid platforms track and report their own results automatically, while organic results often arrive by phone, messages or later searches that are never tagged. Costs are also counted differently: ad spend is visible, time is not.

• Organic social media vs paid advertising: which to choose?
• Is paid social taking credit for organic sales?

What makes a fair comparison?

A fair comparison uses the same rules on both sides.

• Full costs for each, including time.
• The same time window.
• The same definition of a result.
• Results from your own records.
• Tagged links for both.

• Organic vs paid cost per lead: comparing like with like

How do you track both consistently?

Tag every link with UTM parameters so GA4 separates organic and paid social, set enquiries as key events and ask every enquirer how they found you. Google's guidance on campaign URLs explains how to set up the tags.

• Separate paid and organic social traffic in GA4

How do you read the results?

Compare cost per enquiry and, where possible, cost per customer. Paid usually looks better in the first months; organic usually improves over time. Look at the trend, not a single month. GA4's attribution reports show how channels contribute along the way.

• Payback time: when organic and paid social earn it back

What should the comparison change?

Use the comparison to adjust the balance at the margin, not to switch one off. If both pay back, keep both. If one clearly does not after a fair test, change how it is run before deciding to stop it.

• How organic and paid social work together

What does this look like in practice?

A pattern we see: a dog training business was ready to stop posting because ads seemed to bring all its clients. Asking every new client how they found the business showed many had followed its organic videos for months before clicking an ad. Both stayed, with the ads now retargeting video viewers.

• See client work
• Social Media Marketing for UK businesses

Fair comparison checklist

• Count full costs for both.
• Pick a three-month window.
• Define one result, such as an enquiry.
• Tag all links with UTMs.
• Ask every enquirer how they found you.
• Compare trends, not single months.

• Organic vs paid social KPIs: measure each on its own terms
• Separate paid and organic social traffic in GA4

Next step

For the next three months, tag every social link, log every enquiry's source and record full costs. Compare cost per enquiry at the end before changing your split.