What is Subscription Attach Rate? — Definition for DTC operators

Definition

Subscription attach rate is the percentage of eligible new customers who select a subscription option at checkout (vs. one-time purchase). It is the leading indicator of long-term recurring revenue for any brand running a subscribe-and-save offer.

How operators actually use it

Healthy attach rates for consumable categories (coffee, supplements, household) run 15-30% with a 10-15% discount; well-merchandised offers can hit 40%+. The lever set is small: discount size, copy clarity, default selection (pre-checked subscription is meaningfully higher than pre-checked one-time), and post-purchase upsell flow. Each point of attach rate compounds for years through repeat order economics.

Common pitfalls and honest-cost notes

Attach rate is often inflated by 'subscribe to save' as default — those subscribers churn harder because they did not actively choose. Track attach rate split by 'opted in by default' vs. 'actively selected' and watch their respective churn curves. Also: discount-driven subscriptions are not free LTV. The cost of the recurring discount must be modeled into subscription LTV math.

Related terms

Replenishment Rate — Replenishment rate is the percentage of customers who reorder a consumable product within its expected use cycle (e.g., a 30-day supply being reordered by day 45).
Churn Rate — Churn rate is the percentage of customers (or subscribers) who stop buying or cancel in a given period, typically measured monthly.
LTV (Lifetime Value) — LTV is the projected total revenue a customer will generate over their relationship with your brand.
Retention Rate — Retention rate is the percentage of customers from a starting cohort who are still active (have purchased or remained subscribed) at a later point.
Repeat Purchase Rate — Repeat purchase rate (RPR) is the percentage of customers who place a second order within a given window, regardless of product or timing.