Figure 14 Sept 2026From “What is customer churn?”

The customer churn diagnostic card

Distinguish logo attrition from revenue defection and map voluntary dissatisfaction against involuntary payment failures.

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Figure 1The customer churn diagnostic card

Churn dimension	Primary metric	Root cause mechanism	Management response
Voluntary logo churn	Customer cancellation %	Product dissatisfaction, wrong ICP	Product redesign, onboarding fix
Involuntary logo churn	Payment failure cancellation %	Expired cards, gateway rejects	Dunning automation, card updater
Gross revenue churn	Lost contract ARR %	Enterprise budget cuts, consolidation	Executive sponsorship, value reviews
Contraction churn	Downsell and seat reduction %	Over-provisioning, organizational down-sizing	Usage monitoring, rightsizing packages
Unprofitable churn	Negative-margin defection %	High service burden, aggressive discounts	Strategic offboarding, margin protection

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Source: Author's churn-governance framework grounded in customer retention economics from Reinartz and Kumar (2000), Lemmens and Gupta (2020), and Mulhern (1999).

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From the essay

Growth that compounds

What is customer churn?

Customer churn measures account and revenue defection over a defined window. Separate logo churn from revenue churn and voluntary from involuntary loss.

4 Sept 2026

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APA 7

Isoglu, S. (2026). The customer churn diagnostic card [Figure]. isoglu.com. https://isoglu.com/insights/exhibits/isoglu-2026-what-is-customer-churn-fig01/

BibTeX

@misc{isoglu-2026-what-is-customer-churn-fig01,
  author = {Isoglu, Sinan},
  title = {{The customer churn diagnostic card}},
  year = {2026},
  howpublished = {Figure 1, isoglu.com},
  url = {https://isoglu.com/insights/exhibits/isoglu-2026-what-is-customer-churn-fig01/},
  note = {From the essay {What is customer churn?}}
}

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<figure>
  <a href="https://isoglu.com/insights/exhibits/isoglu-2026-what-is-customer-churn-fig01/">
    <img src="https://isoglu.com/social/isoglu-2026-what-is-customer-churn-fig01.png" alt="Figure 1: The customer churn diagnostic card" width="3200" height="2400">
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  <figcaption>Figure 1: The customer churn diagnostic card. Source: Author&#39;s churn-governance framework grounded in customer retention economics from Reinartz and Kumar (2000), Lemmens and Gupta (2020), and Mulhern (1999). <a href="https://isoglu.com/insights/exhibits/isoglu-2026-what-is-customer-churn-fig01/">View exhibit</a>.</figcaption>
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