A measure of growth efficiency comparing the MRR you gained to the MRR you lost in a period.
SaaS Quick Ratio = (new MRR + expansion MRR) ÷ (churned MRR + contraction MRR)
In a month you add £40,000 new and £20,000 expansion MRR, and lose £10,000 churn and £5,000 contraction.
(£40,000 + £20,000) ÷ (£10,000 + £5,000) = £60,000 ÷ £15,000 = 4.0
The SaaS Quick Ratio divides the MRR you added — new plus expansion — by the MRR you lost — churn plus contraction. It captures, in a single number, how efficiently your revenue grows relative to the revenue it sheds.
A ratio of 1 means you are treading water: every pound gained is offset by a pound lost. A ratio of 4 means you add four pounds of new and expansion MRR for every pound you lose, which is the threshold often cited for healthy, efficient growth.
It is a fast diagnostic rather than a deep one. A high quick ratio confirms efficient growth; a low one tells you to dig into whether the problem is weak acquisition, high churn, or both.
The quick ratio shows growth efficiency at a glance. Two companies can grow MRR at the same headline rate, but the one with the higher quick ratio is growing on a more solid base — losing less for every pound it gains, which is far cheaper to sustain.
A quick ratio of 4 or higher is considered healthy for a growth-stage SaaS. Below 1 means you are shrinking.
A quick ratio of 4 or higher is the common benchmark for efficient growth — four pounds of new and expansion MRR for every pound lost to churn and contraction. A ratio of 1 means flat; below 1 means you are shrinking.
Four MRR movements: new and expansion MRR (the numerator) and churned and contraction MRR (the denominator). Mowt tracks all four automatically from your billing data.
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