What Is the SaaS Quick Ratio?
The SaaS Quick Ratio measures how efficiently a company grows by comparing new revenue gained to revenue lost. It answers a fundamental question: for every dollar of revenue you lose, how many dollars do you add?
Unlike the accounting quick ratio (which measures liquidity), the SaaS Quick Ratio is a growth efficiency metric specific to subscription businesses.
Formula
SaaS Quick Ratio = (New MRR + Expansion MRR) / (Churned MRR + Contraction MRR)
For example, if a company adds $50K in new and expansion MRR but loses $10K to churn and contraction:
Quick Ratio = $50K / $10K = 5.0
Benchmarks
| Quick Ratio | Interpretation |
|---|---|
| > 4.0 | Excellent — strong growth, low leakage |
| 2.0 – 4.0 | Healthy — growing well but watch churn |
| 1.0 – 2.0 | Concerning — growth is fighting against churn |
| < 1.0 | Shrinking — losing more revenue than gaining |
Mamoon Hamid of Kleiner Perkins popularized the benchmark of 4.0 as the target for healthy SaaS companies.
Why It Matters More Than Growth Rate
A company growing 20% month-over-month with a Quick Ratio of 1.5 is fundamentally less healthy than one growing 10% with a Quick Ratio of 5.0. The first is brute-forcing growth while hemorrhaging customers. The second retains almost everything it earns.
SaaS Quick Ratio in AI-Run Companies
AI-run companies often achieve exceptionally high Quick Ratios because AI-powered customer success, automated onboarding, and intelligent engagement reduce churn and contraction dramatically. When an AI agent monitors usage patterns 24/7 and proactively intervenes before customers leave, contraction MRR shrinks.
On EvolC, the Quick Ratio is one of the signals investors use to evaluate whether an AI-run company has sustainable, capital-efficient growth — not just top-line vanity metrics.