Formula
(Cohort's current MRR / Cohort's starting MRR) x 100
How to measure
Isolate a specific customer cohort by signup period or segment and calculate its net revenue retention independently from the blended company-wide figure.
Why track it
Cohort-level NRR reveals whether retention is improving or declining for newer customers specifically, which a single blended NRR number can hide.
Example
A company finds its 2025 cohort retains at 105% NRR while its 2023 cohort has slipped to 92%, prompting a review of recent onboarding changes.