What is the SaaS quick ratio?

New plus expansion MRR divided by churned plus contracted MRR — revenue gained per revenue lost.

Investor Mamoon Hamid (then at Social Capital), around 2015 — distinct from the accounting liquidity ratio.

What's a good SaaS quick ratio?

Above 4 is strong for early-stage, 2-4 healthy, below 1 means the company is shrinking despite adding customers.

Growth Marketing Glossary

SaaS Quick Ratio

quick ra·tionoun

For every dollar of revenue you lose, how many do you gain? Below one and the bucket's winning.

Formula — revenue added over revenue lost

Term: SaaS Quick Ratio
Popularized: Social Capital / Mamoon Hamid (2015-era)
Formula: (New + expansion MRR) ÷ (churned + contracted MRR)
Bands: >4 strong; <1 shrinking

Forms & parts of speech

quick ratio · noun (SaaS sense)

Growth-to-leak efficiency.

"Our quick ratio dropped to 1.5 — we're adding revenue but the churn faucet's open wide."

Definition in plain terms

The SaaS quick ratio (distinct from the accounting liquidity ratio of the same name) measures growth efficiency: new MRR plus expansion MRR, divided by churned MRR plus contracted MRR. It answers 'for every dollar of recurring revenue we lose, how many do we gain?' A quick ratio of 4 means $4 added for every $1 lost — efficient growth; a ratio of 1 means the bucket fills exactly as fast as it leaks.

The mechanics

Popularized by investor Mamoon Hamid (then Social Capital) around 2015, the bands run: above 4 is strong (especially for early-stage), 2-4 is healthy, and below 1 means the company is shrinking despite adding customers — the leak beats the inflow. Its power is showing the GROSS flows the net MRR number hides: two companies with identical net growth can have wildly different quick ratios, and the one growing $5 to lose $4 is far more fragile than the one growing $2 to lose $0.50. It exposes the leaky-bucket trap that net metrics paper over.

When it matters

The quick ratio matters as the leaky-bucket detector — the diagnostic for companies that look like they're growing (positive net MRR) but are actually running hard to stay in place. For marketers it reframes the retention-versus-acquisition argument with arithmetic: a low quick ratio means plugging churn returns more than adding acquisition (a dollar of saved churn improves the ratio more than a dollar of new MRR at the margin). It pairs with NDR and logo churn as the gross-flow complement to net metrics.

Worked example. A SaaS celebrates steady net MRR growth until the quick ratio exposes the truth: 1.3 — it's adding $1.30 for every dollar lost, sprinting to inch forward. The gross flows reveal a churn faucet the net number hid. The board reprioritizes: the churn-reduction projects (onboarding fixes, at-risk-account intervention, failed-payment recovery) that improve the DENOMINATOR get funded ahead of acquisition. Quick ratio climbs to 3.1 over three quarters — and the same acquisition spend now produces real growth instead of bucket-refilling, because the leak finally got plugged.

Failure modes to watch. Confusing it with the accounting quick ratio; trusting net MRR while the quick ratio reveals the leak; ignoring that plugging churn improves the ratio faster than adding MRR at the margin; and reading it without stage context (early companies should run high).

Synonyms & antonyms

Synonyms

SaaS quick ratiogrowth quick ratio

Antonyms

leaky-bucket growthnet-MRR complacency

Origin & history

Popularized for SaaS by investor Mamoon Hamid (co-founder of Social Capital, later Kleiner Perkins) around 2015 — borrowing the 'quick ratio' name from accounting for a growth-efficiency gauge; it spread through the metrics-driven SaaS-investing community as a leaky-bucket detector.

Etymology: source.

Usage trends

Search interest for this term over the last five years:

View interest-over-time on Google Trends →

Common questions

What is the SaaS quick ratio?: New plus expansion MRR divided by churned plus contracted MRR — revenue gained per revenue lost.
Who popularized it?: Investor Mamoon Hamid (then at Social Capital), around 2015 — distinct from the accounting liquidity ratio.
What's a good SaaS quick ratio?: Above 4 is strong for early-stage, 2-4 healthy, below 1 means the company is shrinking despite adding customers.

Related tools & calculators

toolCAC calculator
toolLTV-to-CAC ratio

Resources & people to follow

referenceMamoon Hamid / Social Capital — the SaaS quick ratio
referenceSaaS metrics canon — gross vs. net flows
referenceRGM analysis — plugging churn moves the ratio fastest

Curated, non-competitor resources verified per term.

Related training

moduleMarketing analytics

Disciplines

Areas of marketing where saas quick ratio is a core concern:

MeasurementGrowth strategy

Sources

trendsGoogle Trends — "saas quick ratio"