Ecommerce & CRO
Churn rate
Churn rate is the share of customers or subscribers who stop buying over a given period. It is the mirror of retention and the single biggest input into LTV for a subscription business — a subscription with 10% monthly churn keeps the average customer for ten months. Voluntary churn is a product problem; involuntary churn (failed payments) is usually a solvable technical one.
Why it matters
For a subscription business, churn is the whole model. Everything else — acquisition, AOV, margin — is multiplied by how long customers stay, and small changes have outsized effects. Reducing monthly churn from 10% to 7% extends the average customer life from ten months to over fourteen, lifting LTV by roughly 40% without acquiring anyone new.
The reason it is under-managed is that churn is invisible in the short term. A month of poor retention looks identical to a good month on the revenue line, because the cancellations show up as an absence in future months rather than as an event today. By the time the trend is obvious in revenue, it has been running for a quarter.
The split that matters most: voluntary churn is customers deciding to leave, and involuntary churn is payments failing. They have completely different fixes, and the second is usually cheaper to solve.
How it works on Shopify
Churn is measured as customers lost over a period divided by customers at the start of it. For non-subscription stores the equivalent question is repeat rate — the share of customers who buy again within a defined window — since there is nothing to cancel.
Involuntary churn deserves separating out first, because it is largely a technical problem. Cards expire, issuers decline recurring charges, and a subscription silently ends. Dunning — retry schedules, card updater services, pre-expiry notifications — recovers a meaningful share of it, and most stores that have never looked find more of this than they expected.
Voluntary churn is a product question. Cancellation reasons collected at the point of cancelling are the most useful data available, and the common answers cluster: too much product arriving, price, or the shopper never found the flexibility to pause.
Cohort analysis is essential. Churn concentrated in the first two cycles is an expectation or onboarding problem; steady churn later is a value problem.
Common mistakes
- One blended figure. Voluntary and involuntary churn need different work and should never be reported as one number.
- No pause option. Shoppers who cannot pause cancel instead, and cancelling is much harder to reverse.
- Ignoring dunning. Failed payments are recoverable revenue that most stores leave on the table.
- Discounting to save every cancellation. It trains customers to threaten cancellation and erodes margin on the loyal.
- Not asking why. The cancellation flow is the only moment a departing customer will tell you what went wrong.
- Reading the aggregate. First-cycle churn and month-twelve churn are different problems inside the same average.
When you need help
The trigger is a subscription business whose growth has stalled while acquisition continues — new subscribers arriving at the same rate as before and the base failing to grow. That is churn quietly matching acquisition, and it will not fix itself.
The other case is the technical side: instrumenting dunning properly, and making pause, skip, and swap genuinely easy in the customer portal. Both are build work with an unusually direct line to revenue.
Related terms
- LTVLTV, or customer lifetime value, is the total profit a business expects from one customer across the whole relationship. It is what justifies acquisition spend: if LTV is $180 and it costs $60 to acquire a customer, the ratio of 3:1 is generally considered healthy. LTV rises with repeat purchase rate, AOV, and margin, and falls with churn.
- Subscription commerceSubscription commerce is selling on a recurring schedule rather than one order at a time — replenishment of consumables, curated boxes, or memberships. It converts a one-off purchase into predictable recurring revenue and raises LTV sharply, at the cost of managing dunning, churn, and subscriber-facing account tooling. On Shopify it is built on the Subscriptions APIs, usually through an app.