NRR / NDR — Net Revenue (Dollar) Retention

Definition

Revenue retained from the existing base INCLUDING expansion. NRR > 100% means the base grows even with zero new sales — the most prized SaaS property.

Formula

NRR = (Starting MRR - Churned - Contraction + Expansion) / Starting MRR

Worked Example

Starting MRR $84,000; churned $2,200; contraction $1,500; expansion $4,000:

NRR = ($84,000 - $2,200 - $1,500 + $4,000) / $84,000 = 100.4%

Interpretation & Pitfalls

Public SaaS benchmark: 105-130% annually. Read NRR with GRR: 110% NRR with 80% GRR is a leaky bucket patched by heavy upsell.

In TupicFinance

Expansion, contraction, and churn events combine into NRR on the retention dashboard.