A free SaaS quick ratio calculator that compares the MRR you gain against the MRR you lose, to show how efficiently and durably you grow. A fast read on whether your growth is healthy or just papering over heavy losses.
This calculator runs entirely in your browser. Nothing you enter is sent anywhere or stored. It is a quick estimate, not financial advice.
The SaaS quick ratio compares everything you gain in a period against everything you lose, giving a single read on how durable your growth is. It catches a problem that headline growth hides: a SaaS can post strong new bookings while heavy churn quietly eats most of the gain. A quick ratio of 4 means you add four dollars for every one you lose. A ratio near 1 means you are running hard to stand still.
It is a sharper efficiency signal than growth rate alone, because it forces both sides of the ledger into view. Two SaaS companies can grow at the same rate, one with a quick ratio of 4 and durable, efficient growth, the other with a ratio of 1.2 and a leaking base masked by aggressive acquisition. The second is far more fragile and the quick ratio is what reveals it.
Add new MRR from new customers and expansion MRR from upgrades and upsell. This is everything you gained in the period.
Add churned MRR, fully lost and contraction MRR from downgrades. This is everything you lost.
Divide total gains by total losses. Above 2 is healthy, above 4 is excellent. Near 1 means growth is fragile.
The SaaS quick ratio compares the MRR you gain in a period, from new customers and expansion, against the MRR you lose, from churn and contraction. It produces a single number showing how durable and efficient your growth is. A quick ratio of 4 means you gain four dollars of MRR for every one you lose, while a ratio near 1 means losses are nearly cancelling your gains, signalling fragile growth that headline numbers can hide.
Add new MRR and expansion MRR for your total gains, add churned MRR and contraction MRR for your total losses, then divide gains by losses. For example, gaining $55,000 of new and expansion MRR while losing $18,000 to churn and contraction gives a quick ratio of about 3.1. The ratio deliberately forces both sides of the revenue ledger into a single figure, which is what makes it a sharp efficiency signal.
A quick ratio above 2 is healthy for most SaaS and above 4 is excellent, indicating very durable growth where gains dwarf losses. Between 1 and 2 is weak, because losses are eating much of your gain and below 1 means your base is actually shrinking. The benchmark is sometimes cited as 4 for high-performing SaaS, though the right target varies with stage and segment. The trend over time matters as much as the absolute figure.
Because growth rate shows only the net result, hiding how much churn you are fighting to achieve it. Two SaaS companies can grow at the same rate, one efficiently with a high quick ratio and one fragile with a low ratio, masking a leaking base behind heavy acquisition spend. The quick ratio exposes that difference by putting gains and losses side by side, which reveals whether growth is durable or merely bought.
You improve it by increasing gains or reducing losses and for most SaaS reducing losses moves it faster. Cutting churn and contraction directly shrinks the denominator, lifting the ratio and retention work compounds by also raising lifetime value and net revenue retention. On the gains side, expansion revenue is usually cheaper to generate than new business, so driving upsell improves both the quick ratio and overall efficiency at once.
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