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finance.business-expansion-revenue Calculator
Calculates expansion revenue (upsells, cross-sells, seat additions) and its contribution to net ARR growth in a business finance context. Expansion revenue has zero CAC — it's the most efficient growth motion. Companies where expansion revenue exceeds new logo ARR have particularly efficient unit economics.
Inputs
Existing Customers
Reference formula or conversion factor shown for context.
Expansion Rate
Amount per unit of time or per unit quantity. Check the denominator before interpreting.
Arpu
Reference formula or conversion factor shown for context.
Churn Pct
Reference formula or conversion factor shown for context.
Results
expansion MRR
MRR (monthly recurring revenue) -- total predictable monthly subscription income. MRR x 12 = ARR.
net expansion MRR
MRR (monthly recurring revenue) -- total predictable monthly subscription income. MRR x 12 = ARR.
NDR
Sample size or count used in the calculation.
churn MRR
MRR (monthly recurring revenue) -- total predictable monthly subscription income. MRR x 12 = ARR.