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How to Write a Case Study That Builds Trust

Turn a real customer result into a credible, specific story you can use across your funnel - with permission and without exaggeration.

By Funnel Guru Training Editorial TeamPublished 2026-09-27Updated 2026-09-271 min read
  1. Real customer
  2. Permission
  3. Story
  4. Use in funnel

Key takeaways

  • Case studies must be real, accurate and approved by the customer.
  • Specific details are more persuasive than big claims.
  • Include context so readers can judge whether results apply to them.

Structure

Case study outline
1. THE CUSTOMER - who they are (with permission)
2. THE SITUATION - what was happening before
3. THE CHALLENGE - what they'd tried and why it hadn't worked
4. WHAT WE DID - the approach, step by step
5. THE RESULT - specific, verifiable outcomes and timeframe
6. CONTEXT - what else contributed; that results vary
7. IN THEIR WORDS - an approved quote

Credibility rules

  • Get written permission to publish names, logos and quotes.
  • Report results accurately, including timeframes.
  • Mention other factors that contributed.
  • Avoid implying typical results if they aren't typical.

Where to use case studies

  • Sales pages near the call to action
  • Proof emails in sequences
  • Webinar examples
  • Service and pricing pages
  • Retargeting ads (where platform rules allow)

FAQ

What if customers don't want to be named?

Anonymised case studies can still be useful if accurate. Describe the business type and situation without identifying details, and say it's anonymised.