MRR / ARR Growth Projection

MRR with monthly growth + churn → 12-month projection. ARR = MRR × 12.

Inputs

Existing customer revenue growth. Negative = contraction.

Result

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How to use this calculator

  • Enter starting MRR + monthly new + expansion + churn.

About this calculator

MRR (Monthly Recurring Revenue) projection: start + new − churn + expansion. ARR = MRR × 12. SaaS investors care about ARR growth + Net Revenue Retention. NRR = (start + expansion − churn) / start. >100% NRR (negative net churn) is best-in-class. Linear new-MRR + low churn + expansion → exponential ARR growth. Healthy SaaS: 50-100% YoY ARR growth at $1-10M ARR; 30-50% at $10-100M.

Frequently asked

MRR vs. ARR?+
MRR: monthly. ARR: annualized (× 12). Same thing different scale. SaaS reports both.
NRR?+
Net Revenue Retention. Includes expansion. (Start + expansion − churn) / start. >100% = expansion outpaces churn (great).
Why expansion crucial?+
Easier to grow existing customers than acquire new ones. NRR > 110% means ARR doubles in <8 years from existing base alone.
Linear vs. compounding?+
Constant new MRR / month is linear. Constant % growth (compounding) accelerates faster.
Investor benchmarks?+
Series A: 100%+ YoY. Series B: 80-150%. Series C+: 50-100%. Public: 30-50% world-class.

Related calculators

Customer Lifetime Value (LTV)
LTV = ARPU × gross margin × lifetime. Foundational SaaS unit economics.
CAC Payback Period
Months = CAC / (ARPU × gross margin). Time to recover acquisition cost.
Churn Rate Calculator
Monthly churn = customers lost / start customers. Annualized: 1 − (1−monthly)^12.
Gross Margin
Gross margin % = (Revenue − COGS) / Revenue. Profit before operating expenses.
Contribution Margin
CM = Revenue − Variable Costs. CM ratio = CM / Revenue.
CAC vs LTV Ratio
LTV / CAC ratio. Healthy SaaS: 3:1+; under 1:1 burns money.

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