Membership retention review: how to audit why members leave

01/ When to run a retention review

Review when the rate moves, or nobody can explain it.

Run one when renewal falls for two years running, when first-year members lapse faster than you expected, before a fee increase, or when a new chief executive asks why the number is what it is and nobody can answer.

For charities, it is also governance. The Charity Commission reminds trustees that they have “independent control over, and legal responsibility for, a charity’s management and administration” (Charity Commission, CC3). Members are often the income and the purpose at once.

A retention review is narrower than a full membership review. It does not question your categories or fees; it asks why the members you already have stop paying.

02/ What data to pull

Five years of records, one row per membership year.

Export every membership record for at least five years, one row per member per year: join date, category, fee paid, payment method, renewal outcome, lapse date and any lapse reason recorded.

Add what explains behaviour: event attendance, CPD logged, email engagement, portal log-ins, service use. Even partial engagement data lets you test whether active members renew more.

Clean before you analyse. The ICO’s accuracy principle requires “every reasonable step” to keep personal data accurate and, where necessary, up to date (ICO, accuracy). Duplicate records and stale emails also distort the lapse count.

Check retention too. The ICO expects organisations to document standard retention periods and review them (ICO, storage limitation); old lapsed-member records you keep for analysis need a reason and a period.

03/ Cohort analysis

Group members by the year they joined.

An overall renewal rate blends members who joined last year with members of twenty years. Split them into joining cohorts and follow each one forward.

Most reviews find the steepest drop between year one and year two. That is consistent with the US benchmark: MGI’s 2024 report put median first-year renewal at 75% (n=333) (MGI 2024), while the 2026 edition put median renewal for all members at 82% (MGI 2026). Different editions, both US surveys.

Then cut each cohort by category, acquisition source and payment method. A cohort recruited through a discount, or paying by invoice rather than direct debit, often renews very differently.

Keep the analysis running after the review with the member retention tracker. The formula behind the rate is on membership retention rate.

04/ Lapse reasons

Code every lapse, and chase the unknowns.

Sort lapses into a short fixed code list: cost, value, career or life change, moved to a rival, employer stopped paying, payment failed, contact lost, and unknown.

Separate voluntary from involuntary. Payment failure and lost contact are process problems; the rest are value problems. The distinction is set out on membership churn rate.

If unknown is the biggest code, that is the first finding. Fill the gap with a short call programme or survey to a sample of recent lapsers; question sets are on member exit survey and member retention survey.

05/ Journey touchpoints

Walk the member journey as a new joiner.

Join as a member yourself, or shadow a recent joiner. Record every message, login, charge and silence across the first year.

Look for the gaps: weeks with no contact after the welcome, benefits nobody explains, a portal that asks for a password reset on first visit, an event invitation that arrives after the event.

Map what you find against the stages in member journey and the first 90 days in member onboarding.

06/ Renewal process audit

Test the renewal cycle from the member’s side.

List every reminder: when it goes, through which channel, from which sender, and what it asks the member to do. Then renew a test account through each payment route.

Check the failure paths. What happens when a card is declined, a direct debit bounces or the invoice contact has left? Is there a grace period, and does anyone call before a long-standing member lapses?

Good practice for reminders, grace periods and win-back is on membership renewals.

08/ Scoring findings and the report

Rank findings by impact and effort.

Score each finding twice, from one to five: how many members or how much income it affects, and how hard it is to fix. Quick, high-impact fixes go first; they are often involuntary churn.

Keep the report short: a one-page summary, the cohort grid, lapse reasons by code, the journey gaps, the renewal audit and a ranked list of actions with owners.

That ranked list is the input to the membership retention plan, which turns it into twelve months of work.