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finance.business-net-retention Calculator
Calculates Net Revenue Retention (NRR) in a business finance context from starting revenue, expansion, contraction, and churn. NRR above 120% means the existing customer base grows revenue by 20%/year without new customer acquisition — the defining characteristic of elite SaaS companies.
Inputs
Start Mrr
Reference formula or conversion factor shown for context.
New Mrr
Reference formula or conversion factor shown for context.
Expansion
Reference formula or conversion factor shown for context.
Churn Mrr
Reference formula or conversion factor shown for context.
Results
net revenue retention
Sample size or count used in the calculation.
gross retention
Sample size or count used in the calculation.
ending MRR
MRR (monthly recurring revenue) -- total predictable monthly subscription income. MRR x 12 = ARR.
expansion rate
The value at the specified point or condition.
annual NDR
The result expressed on a per-year basis.
retention quality
A qualitative assessment of how the result compares to the desired standard or benchmark.