Definition
Retention rate measures the fraction of customers (or revenue) that remains over a period. It is the complement of churn when measured on the same basis and time window.
Formula
Retention rate = 1 - churn rate (with consistent definitions)
Example
If monthly logo churn is 3% for a cohort, monthly logo retention is about 97% (for the same definition and period).
How to use it
- Specify whether you mean logo retention (customers) or revenue retention (dollars).
- Use cohort retention curves to see where retention drops over time.
- Pair retention with gross margin to understand LTV and payback feasibility.
Common mistakes
- Mixing logo churn with revenue retention (different denominators).
- Comparing retention across periods without consistent cohort definitions.
Measured as
Retention rate = 1 - churn rate (with consistent definitions)
Misused when
- Mixing logo churn with revenue retention (different denominators).
- Comparing retention across periods without consistent cohort definitions.
Operator takeaway
- Specify whether you mean logo retention (customers) or revenue retention (dollars).
- Use cohort retention curves to see where retention drops over time.
- Pair retention with gross margin to understand LTV and payback feasibility.
- Keep Retention Rate consistent by cohort, segment, and period before you use it as a decision signal in planning or reporting.
- Interpret the metric alongside retention, margin, or payback so one ratio does not hide the real operating trade-off.
Next decision
- Quantify the impact with Retention Rate Calculator if you need to turn the definition into an operating assumption.
- Read Retention curves: how to read them and why they matter if the decision depends on interpretation, policy, or trade-offs beyond the raw formula.
Where to use this on MetricKit
Calculators
- Retention Rate Calculator: Calculate retention rate for a period accounting for new customers.
- Retention Curve Calculator: Model a simple cohort retention curve (logo retention) and translate it into expected revenue and gross profit over time.
- Two-stage Retention Curve Calculator: Model a retention curve with different churn rates for early months vs steady-state, and estimate expected value over time.
- Cohort Payback Curve Calculator: Estimate when a cohort pays back CAC using a simple retention curve (two-stage churn) and optional expansion.
Guides
- Retention curves: how to read them and why they matter: A practical guide to retention curves: what they show, how to interpret churn vs retention, and how to connect retention to LTV and payback.
- Cohort vs aggregate metrics: why averages can mislead: Aggregate metrics hide churn and expansion dynamics. Learn when to use cohort analysis and how to interpret retention and LTV.
- Two-stage churn: modeling early drop-off vs steady-state retention: A practical guide to two-stage churn models: why early churn matters, how to model it, and how to connect retention improvements to LTV.
- Cohort payback curves: how to model payback with early churn: A practical guide to cohort payback: why payback matters for survival, how early churn affects payback, and how to improve it.
- Retention & churn hub: cohorts, GRR/NRR, and retention curves: A practical hub for retention measurement: churn rate, GRR/NRR, cohort retention curves, and how to set retention targets without getting misled by noise.