SaaS Quick Ratio Calculator
Enter new ARR, expansion ARR (upsell/cross-sell), churned ARR, and downgrade ARR to calculate the SaaS "Quick Ratio" — a measure of growth efficiency. Includes a 4-tier rating and benchmark table.
Quick Ratio benchmark reference table
| Tier | Quick Ratio range | Meaning |
|---|---|---|
| Excellent | 4 or higher | ARR gained is at least 4x ARR lost — a very healthy growth engine |
| Good | 2 to under 4 | ARR gained comfortably outpaces ARR lost — solid growth |
| Fair | 1 to under 2 | ARR gained only slightly outpaces ARR lost — room to improve |
| Poor | Below 1 | ARR lost exceeds ARR gained — overall ARR is shrinking, a risky state |
What counts as a healthy Quick Ratio varies by business stage and customer segment. Treat these ranges as general guidance only.
What the SaaS Quick Ratio is
The Quick Ratio shows **how many times over the ARR gained in a period exceeded the ARR lost**, and so measures the efficiency of growth. Add new ARR to expansion ARR for the total gained, add churn ARR to downgrade ARR for the total lost, and divide the first by the second. Below 1 the losing side has the upper hand and the business is shrinking in ARR terms.
The benchmarks run: 4 and above Excellent, 2 to under 4 Good, 1 to under 2 Fair, below 1 Poor. **Since the divisor is the total lost, a period with no losses at all cannot be computed.** The right level also shifts with the stage of the business and the customer segment: early on the base is small and the figure swings easily, while at maturity a larger existing base makes a high value harder to hold. Treat the table as a general guide.
How to use the Quick Ratio calculator
- Enter new ARR The ARR won from new customers during the period.
- Enter expansion ARR The ARR added during the period through plan changes and further purchases by existing customers. Leave it at zero if there was none.
- Enter churn ARR The ARR lost where existing customers ended their contracts.
- Enter downgrade ARR The ARR lost where existing customers moved to a cheaper plan. Count it apart from churn.
- Read the result You get the Quick Ratio along with the totals gained and lost. Where churn and downgrades come to zero there is nothing to divide by, so no figure is produced.
Tips for getting more out of it
- Unlike NRR, which only looks at your existing customer base, Quick Ratio includes new ARR in the numerator — making it better suited to judging the health of your overall growth engine.
- To break down the new-vs-expansion split further, pair this with our MRR/ARR growth simulator or SaaS Magic Number calculator.
- Tracking whether churn or downgrades drive most of your total losses makes it easier to prioritize customer-success initiatives.
- You can calculate this monthly, quarterly, or annually, but shorter periods are more sensitive to timing noise in churn and expansion — keep the period consistent when comparing over time.
Where the Quick Ratio helps
Checking the efficiency of growth
However large the gains, a business goes nowhere if it loses as much. This puts gains and losses into a single ratio.
Seeing whether the bucket has a hole in it
Below 1, more is leaking than is being poured in. Churn needs attention before any further spend on acquisition.
Deciding before raising acquisition spend
Piling on new business while losses stay large does not improve efficiency. This is the check that comes before that decision.
Tracking the movement period by period
Set the months or quarters side by side and you can read how the balance of gains and losses shifted around a given initiative.
Pairing it with the retention figures
For retention including expansion, see the NRR calculator; excluding expansion, the GRR calculator; for how long acquisition cost takes to earn back, the CAC payback calculator.
Terms about the Quick Ratio
- Quick Ratio
- Total ARR gained divided by total ARR lost. Above 1 the overall ARR is rising; below 1 it is shrinking.
- Total gained
- New ARR plus expansion ARR — both what came from new customers and what existing customers added.
- Total lost
- Churn ARR plus downgrade ARR. It is the divisor in the Quick Ratio, so at zero the ratio cannot be computed.
- New ARR
- The ARR won from new customers during the period. Growth within existing accounts is counted separately as expansion.
- Expansion ARR
- ARR added through upsell or cross-sell to existing customers.
- ARR (annual recurring revenue)
- The revenue a subscription contract yields on a continuing basis over a year. It is the basic unit for the size and growth of a SaaS.
Frequently asked questions
Side Note — A SaaS metric that measures quality, not just quantity
The SaaS Quick Ratio is generally credited to David Skok, a partner at venture capital firm Matrix Partners, who introduced the concept around 2010; it was later widely adopted by the SaaStr community and beyond. Looking at ARR growth rate alone cannot tell you whether that growth came from new acquisition or simply from low churn. By directly comparing ARR gained against ARR lost, Quick Ratio makes the "quality" of growth visible at a glance.
The name is a deliberate analogy to the accounting "quick ratio," which measures a company's short-term liquidity as the ratio of liquid assets to current liabilities. Just as the accounting version measures a firm's ability to pay near-term obligations, the SaaS version measures a business's growth resilience as a ratio of ARR gained to ARR lost.
In practice, a Quick Ratio that falls below 1 (losses exceeding gains) for several consecutive months is treated as an early warning sign that overall ARR is about to shrink. It is one of the metrics investors commonly check during SaaS due diligence, typically alongside NRR and Rule of 40 for a fuller picture of business health.