Expansion MRR Calculator (Share of Starting MRR)
Expansion bookings as a percentage of starting MRR for the timeframe you framed.
Open calculator →SaaS Quick Ratio Calculator
(New MRR + expansion MRR) ÷ churn and contraction dollars—velocity check, not profit.
Overview
Rough check of whether new and expansion revenue outpaces recurring revenue lost to churn and downgrades. If churn dollars in the denominator are very small, the ratio can look unusually high—look at the underlying numbers too.
When to use this calculator
- When you compare new-plus-expansion bookings against contraction dollars
- Before you confuse velocity with EBITDA or net income
- When denominators spike from one bad churn month—not product collapse
- When pairing with GRR/NRR avoids single-number dashboards
Rule of thumb
Momentum versus churn-loss dollars—not profit. Weird denominators can flatter the ratio.
Terms used in this calculator
- NRR / Net Dollar Retention
- Whether recurring revenue grew or shrank on existing customers once you fold expansions, downgrades, and churn dollars together.
- MRR
- Monthly recurring revenue: paying subscribers times the recurring monthly revenue you attach to each after any annual-to-monthly split you use.
Calculator
SaaS quick ratio
4.69x
Results are simplified estimates for educational purposes only and should not be treated as financial, accounting, legal, or tax advice. See our disclaimer for details.
Formula
(New + expansion recurring) ÷ churn & contraction recurring lost.
Example calculation
Using the default example values from the JSON seed for this tool:
- New business MRR
- 32000
- Expansion MRR
- 14000
- Churn & contraction MRR lost
- 9800
Result: 4.69x (SaaS quick ratio)
How to interpret this result
Compares new-plus-expansion recurring momentum with churn-style dollar losses you entered.
Not profit or cash—just velocity versus leakage in your definitions.
Pair with NRR/GRR so one ratio cannot tell the whole story.
Common mistakes
- Calling numerator wins “profit” when they are mostly booked revenue, not cash collected.
- Shrinking denominators with one anomaly month and overstating despair.
- Stopping at this ratio without GRR/NRR checkpoints.
What to do next
Pull NRR/GRR and churn-dollar tools so the ratio is not a vanity bounce.
How to improve this result
- Investigate asymmetric churn-dollar losses bubbling through denominator.
- Contrast with NRR/GRR to avoid single-number dashboards.
- Forecast pipeline realistically when numerator depends on outbound sales.
Recommended tools
- Baremetrics SaaS metrics and subscription analytics dashboards.
- ChartMogul Subscription analytics for revenue, churn, and cohort reporting.
FAQ
- Why split new versus expansion numerator?
- Investors read each lever differently even if you multiply them together here.
- Tiny churn buckets?
- They inflate ratios—pair cohort detail.
- Cash timing?
- This is bookings-style recurring framing—collections may lag.
- Same as Rule of 40?
- No—different lens entirely (growth+margins combo elsewhere).
Related calculators
MRR Calculator
Paying customers × average monthly recurring price after you convert plan mix into monthly amounts.
Open calculator →Net Revenue Retention Calculator
Ending expansion-adjusted recurring revenue indexed to starting baseline for the cohort window.
Open calculator →Revenue Churn Calculator (Gross MRR Lost)
Recurring revenue lost from downgrades and cancellations compared with recurring revenue at the start of the period.
Open calculator →Affiliate disclosure
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