Rebill / Retention Rate

What is Rebill / Retention Rate?

Rebill rate is the percentage of subscription customers who successfully renew past their first order (subscribers renewing ÷ subscribers due to renew), and it is the metric that turns a break-even first order into a profitable customer.

The formula and a worked example

Rebill rate = subscribers who renew ÷ subscribers due to renew in the period, tracked order by order because the early renewals are where the risk concentrates. Work an example with round, illustrative numbers. A supplement brand acquires subscribers at a $75 CAC (inside the $40–110 blended range across AdBoost Health partner accounts) on a $55 first order, so the first transaction loses money outright. At a 50% gross margin the second order returns about $28 of gross profit and the third another $28, so the customer only crosses into profit around rebill three. The entire business case lives in orders 2–4, not in the acquisition.

Why the first few rebills decide everything

Subscription attrition is front-loaded. Per DTC subscription benchmark data, churn runs 6.5–7.1% per month and 60–70% of subscribers cancel between orders 1 and 3, which means the make-or-break moment arrives immediately after a first order that already lost money. A brand that holds rebill rate through orders two and three has a fundamentally different LTV than one bleeding most of its cohort before it ever recovers CAC, even at the identical acquisition cost.

Voluntary vs involuntary rebill loss

Failed rebills split into two problems with different fixes, and conflating them wastes effort:

Involuntary loss is pure recovery, because those customers wanted to stay and a payment simply failed, so it is usually the cheapest set of rebills a brand can win back.

Why it matters for health and DTC brands

Because a health first order often only breaks even, rebill rate is not a retention nicety filed away from marketing; it is part of acquisition economics, and it belongs on the same P&L line as CAC. Dunning for failed payments, order-two incentives, and cancellation-flow saves each buy incremental rebills that flow straight to profit, and they compound: a few points of rebill rate lengthens average lifespan and lifts LTV more than most media optimizations. Since rebills are where a break-even first order finally pays back, model CAC payback and LTV:CAC on real order-by-order rebill curves, watch it alongside churn and retention, and check the affordable acquisition math with the LTV:CAC calculator.

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