Measuring ROI from SEO: Proving Your Digital Marketing Investment
To measure SEO return on investment, you need to track the enquiries and sales that come from organic search, put a value on them and compare that value with what you spent. The formula is simple; the hard part is setting up tracking that you can trust.
Published by SEO Consultants · Last reviewed
The basic calculation
ROI = (value generated from organic search − cost of SEO) ÷ cost of SEO × 100.
For example, if SEO costs £2,000 over a period and organic search produces £6,000 of gross profit, the ROI is 200%. Use profit rather than revenue where you can.
Metrics that matter
| Level | Metric | Source |
|---|---|---|
| Visibility | Impressions, average position, queries | Google Search Console |
| Traffic | Organic clicks and sessions | Search Console, analytics |
| Engagement | Engaged sessions, key pages visited | Analytics |
| Outcomes | Form submissions, calls, sales | Analytics, CRM, call tracking |
| Value | Revenue or profit from organic leads | CRM or e-commerce platform |
Setting up tracking
- Verify Google Search Console.
- Configure key events in Google Analytics for forms, calls and purchases.
- Record the lead source in your CRM.
- Respect UK GDPR and PECR consent rules for analytics cookies.
Be realistic about attribution
Customers often find you through several channels. Look at assisted conversions and trends over time rather than any single report. Our SEO services include reporting tied to business outcomes, and an SEO audit checks your tracking.
Related pages
- ServicesSEO ServicesTechnical SEO, local SEO, content optimisation and ethical link building for UK businesses. See what each service involves and how we work.
- ServicesSEO AuditsIn-depth SEO audits covering technical health, content and links, with a prioritised action plan written in plain English.
- FAQsHow Long Does SEO Take?Realistic SEO timelines for UK businesses, what affects them and what progress to expect in the first months.
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