Your SaaS company is growing, but is it growing efficiently or filling a leaky bucket? The SaaS Quick Ratio answers: it compares the recurring revenue you gain (new customers and expansion) with the one you lose (churn and contraction). It is the metric investors prefer to judge the quality of growth: two companies with the same net new MRR can have very different quick ratios, and the one with the higher ratio is much healthier. This calculator determines it from the four components of MRR.

What the SaaS Quick Ratio is

The SaaS Quick Ratio is the ratio between the gained MRR and the lost MRR in a period. Formalized by Social Capital, it measures how many euros of recurring revenue a company adds for every euro it loses. With 30,000 of gained MRR and 8,000 lost, the quick ratio is 3.75: for every euro lost, the company gains 3.75. The higher the value, the more efficient the growth: the company not only grows, but does so without having to continuously replace the customers who leave.

The four components of MRR

Recurring revenue moves in four directions. The new MRR comes from new customers. The expansion MRR comes from existing customers who upgrade or buy more (upsell). The churn MRR is the one lost from customers who cancel. The contraction MRR is the one lost from customers who stay but downgrade. The first two are the gained MRR, the last two the lost MRR. The quick ratio combines them into a single number that tells the dynamics of growth.

How the quick ratio is calculated

The formula is: Quick Ratio = (new MRR + expansion) / (churn + contraction). You add the two positive components and divide them by the two negative ones. With 20,000 of new MRR, 10,000 of expansion, 5,000 of churn and 3,000 of contraction: (20,000 + 10,000) / (5,000 + 3,000) = 30,000 / 8,000 = 3.75. The calculation is simple, but it requires measuring the four components of MRR correctly, distinguishing expansion from new and churn from contraction.

The Net New MRR and its quality

The Net New MRR is the net revenue growth: gained MRR minus lost MRR. In the example, 30,000 − 8,000 = 22,000 of net growth. But the net new alone is misleading: two companies with the same net new can have different quality. One that adds 22,000 losing 2,000 (quick ratio 12) is much healthier than one that adds 44,000 losing 22,000 (quick ratio 3). The quick ratio reveals exactly this: how much of the gross growth survives the losses.

How the quick ratio is interpreted

There are established benchmarks. A quick ratio below 1 means contraction: you lose more than you gain, the revenue shrinks. Between 1 and 2 the growth is inefficient: you grow, but you burn a lot of acquisition to replace the losses. Between 2 and 4 the growth is good. Above 4 it is excellent: you gain at least four times what you lose, the sign of a SaaS that scales healthily. The "golden" reference for strongly growing companies is precisely a quick ratio of 4 or more.

Why churn counts double

The quick ratio shows why churn is so poisonous for a SaaS. Every euro of lost revenue not only reduces the total, but must be replaced with new MRR just to stand still: it is like running on a treadmill. A company with high churn must acquire customers at a frantic pace just to not fall behind, burning marketing and sales budget. Reducing churn and increasing expansion improves the quick ratio from both sides, and it is almost always more efficient than pushing only on acquisition.

How the calculator works

Enter the four components of the period's MRR: new MRR, expansion, churn and contraction. The calculator returns the gained MRR, the lost MRR, the net new MRR and the SaaS Quick Ratio, with an assessment of the quality of growth. It is the quickest way to understand whether your growth is efficient or whether you are burning acquisition to replace fleeing customers. Try different scenarios to see the impact of reducing churn or increasing expansion.

The values you need

You need the four components of MRR for the same period (month or quarter): the new MRR from acquired customers, the expansion from existing customers' upgrades, the churn from lost customers and the contraction from downgrades. Most billing systems and SaaS analytics tools provide these metrics. Make sure to correctly distinguish expansion (existing growing) from new (new customers) and churn (lost customers) from contraction (customers who stay but reduce).

Interpreting the SaaS Quick Ratio

The benchmarks to judge the quality of growth:

The reference value for a strongly growing and healthy SaaS is a quick ratio of 4 or more.

The components of MRR compared

The four forces that move recurring revenue:

The quick ratio sums the two "gained" and divides them by the two "lost": gained above, lost below.

Example: same net new, different quality

Two companies with the same net new MRR of 20,000, but opposite growth quality:

Same net growth, very different health: the last company burns twice the acquisition for the same result.

How to improve the quick ratio

Two levers, acting on both sides of the ratio. Reduce the losses: lower the churn (better onboarding, customer success, stickier product) and the contraction (avoid downgrades with more value). Increase the gains: more acquisition, but above all more expansion, which is the most efficient way to grow because it leverages already-acquired customers. Companies with high quick ratios often have a strong expansion engine (upsell, cross-sell) that naturally offsets churn.

What the calculation does not consider

The quick ratio captures a single period: it should be looked at over time, because an exceptional (or terrible) month does not make a trend. It does not consider the size of the company: a high quick ratio is easier to maintain when the customer base is small and becomes harder at scale. It does not account for margins or acquisition costs (for those you need LTV:CAC and CAC payback). It is a growth-quality metric, not a profitability one: it should be read together with the other unit economics.

Common mistakes

• Confusing expansion (existing customers) with new MRR (new customers).
• Confusing churn (lost customers) with contraction (downgrades of those who stay).
• Looking only at net new MRR ignoring the quality (the quick ratio).
• Evaluating a single period instead of the trend over time.
• Forgetting that the quick ratio naturally declines with scale.

How to use the calculator

Enter new MRR, expansion, churn and contraction. Read the quick ratio and compare it with the benchmarks: below 4 there is room for improvement on the quality of growth. Simulate reducing churn or increasing expansion to see how much the ratio rises. Monitor the quick ratio over time, not in a single month, and read it together with LTV:CAC and CAC payback for a complete view of your SaaS unit economics.

Practical example

In the quarter your SaaS company added 20,000 of new MRR and 10,000 of expansion, and lost 5,000 to churn and 3,000 to contraction. The calculation gives a gained MRR of 30,000, a lost MRR of 8,000, a Net New MRR of 22,000 and a SaaS Quick Ratio of 3.75x, with the verdict "good growth: acquisition and expansion beat the losses". You are close to the golden benchmark of 4: reducing churn a bit or pushing expansion would bring you into the excellent range. Enter your numbers for your real situation. The quick ratio captures a period and measures the quality of growth, not profitability; it should be read over time and together with the other unit economics. It is an informational estimate.

Frequently asked questions

What is the SaaS Quick Ratio?

It is the ratio between the gained MRR (new customers + expansion) and the lost MRR (churn + contraction) in a period. It measures the efficiency of growth: how many euros of recurring revenue you add for every euro you lose. With 30,000 gained and 8,000 lost, the quick ratio is 3.75.

How is the quick ratio calculated?

Quick Ratio = (new MRR + expansion) / (churn + contraction). With 20,000 of new MRR, 10,000 of expansion, 5,000 of churn and 3,000 of contraction: (20,000+10,000)/(5,000+3,000) = 30,000/8,000 = 3.75.

What are the four components of MRR?

New MRR (from new customers) and expansion (upgrades of existing customers) are the gained MRR; churn (lost customers) and contraction (downgrades of those who stay) are the lost MRR. The quick ratio combines these four forces into a single number.

What is a good quick ratio?

Below 1 you are contracting (you lose more than you gain), 1-2 inefficient growth, 2-4 good growth, over 4 excellent growth. The "golden" reference value for a strongly growing and healthy SaaS is a quick ratio of 4 or more.

Why is net new MRR alone not enough?

Because two companies with the same net new can have opposite growth quality. One that adds 22,000 losing 2,000 (quick ratio 12) is much healthier than one that adds 44,000 losing 22,000 (quick ratio 3). The quick ratio reveals how much of the gross growth survives the losses.

What is the difference between churn and contraction?

Churn is the MRR lost from customers who cancel entirely (they leave). Contraction is the MRR lost from customers who stay but downgrade (reduce spending). Both are "lost MRR" in the quick ratio, but should be measured separately to understand where to act.

What is the difference between new MRR and expansion?

New MRR comes from newly acquired customers. Expansion comes from existing customers who upgrade or buy more (upsell). Both are "gained MRR", but expansion is usually the most efficient source of growth because it does not require new acquisition.

Why is churn so damaging?

Because every euro lost must be replaced with new MRR just to stand still: it is like running on a treadmill. A company with high churn must acquire customers at a frantic pace just to not fall behind. The quick ratio clearly shows this effect, penalizing the losses.

How do you improve the quick ratio?

From two sides: reducing the losses (lower churn with better onboarding and customer success, reduce contraction) and increasing the gains (more expansion via upsell/cross-sell, the most efficient way to grow). Acting on expansion and churn together is more powerful than pushing only acquisition.

Does the quick ratio change with the company size?

Yes, it tends to decline at scale. It is easier to have a high quick ratio when the customer base is small (little to lose, a lot to gain in percentage). With growth, churn on a large base becomes harder to offset, so high values are harder to maintain.

Over what period should it be calculated?

Over a consistent period (month or quarter), using the four components of the same period. It should be looked at over time, not in a single month: an exceptional or terrible month does not make a trend. The quick ratio trend matters more than the point value.

Does the quick ratio measure profitability?

No, it measures the quality and efficiency of growth, not the profit. A company can have a high quick ratio but unprofitable unit economics if the acquisition cost is too high. It should be read together with LTV:CAC and CAC payback for a complete view.

Is it financial advice?

No, it is an informational tool that calculates the efficiency of recurring revenue growth. It measures a single period and does not consider margins, acquisition costs or size. It should be read over time and together with the other SaaS unit economics.

Updated July 2026