MRR & ARR Calculator
Calculate Monthly Recurring Revenue, Annual Recurring Revenue, MRR growth rate, and Net Revenue Retention for SaaS businesses.
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How to use this calculator
MRR is built from its components: new subscriptions add new MRR, upgrades add expansion MRR, cancellations subtract churn MRR, and downgrades subtract contraction MRR. NRR shows whether existing customers are growing or shrinking in value.
- 1
Pull MRR data from your billing system (Stripe, Chargebee, Recurly) or CRM at the start and end of the month.
- 2
Break MRR movement into its components: new, expansion (upgrades), churn (cancellations), and contraction (downgrades).
- 3
Monitor NRR closely — above 100% means existing customers are growing and you have negative churn.
- 4
Track all five MRR components month-over-month to identify whether revenue challenges are an acquisition or retention problem.
Frequently asked questions
What is the difference between MRR and ARR?
MRR (Monthly Recurring Revenue) is the normalised monthly subscription income. ARR (Annual Recurring Revenue) is MRR × 12 — the annualised run rate. ARR is used for investor reporting and valuations; MRR is the operational metric for tracking month-to-month performance.
What is a good Net Revenue Retention (NRR)?
NRR above 100% means your existing customer base is growing through upgrades and expansions, even accounting for churn. World-class SaaS companies achieve NRR of 120–140% (Snowflake, Datadog). NRR above 110% is excellent; 100–110% is good; below 100% means churn is eroding the base faster than expansion adds to it.
Should I include one-time revenue in MRR?
No — MRR only includes predictable, recurring subscription revenue. One-time fees (setup fees, professional services, one-off projects) should be reported separately. Including them in MRR inflates the metric and misleads investors about the predictability of revenue.
What is expansion MRR and how do I grow it?
Expansion MRR comes from existing customers paying more through upgrades, seat additions, or usage-based overages. It is the highest-quality MRR because there is no CAC attached. Grow it through usage-based pricing, feature tiers, account-based upsell motions, and proactive customer success outreach.
MRR & ARR Calculator — SaaS Recurring Revenue Metrics
Why Tracking MRR Components Matters
Two companies can have identical ending MRR but very different health. Company A has $50K MRR from $10K new MRR, $5K expansion, $5K churn, and $0 contraction. Company B has $50K MRR from $20K new MRR, $0 expansion, $15K churn, and $5K contraction. Company A has a healthier engine — lower churn and active expansion. Company B is burning through customers. Tracking all five MRR components reveals which levers need attention.
Using ARR for Valuation and Fundraising
SaaS valuations are typically expressed as a multiple of ARR — commonly 5–15× for high-growth startups. Investors pay the highest multiples for companies with strong NRR (above 120%), predictable new MRR growth, and declining churn. ARR also informs your rule of 40 score: if ARR growth rate + profit margin is above 40%, the company is considered efficiently run. Use this calculator monthly to track ARR momentum and prepare for investor conversations.
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Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →