SaaS Quick Ratio Calculator

The SaaS quick ratio — popularized by Mamoon Hamid and unrelated to the accounting quick ratio that measures liquidity — answers a question net new MRR cannot: how efficiently are you growing? Two companies can both add $10,000 of net new MRR in a month. One adds $12,000 and loses $2,000; the other adds $50,000 and loses $40,000. Identical net growth, completely different businesses. The first has a quick ratio of 6 and compounds. The second has a quick ratio of 1.25 and is running a treadmill that gets steeper with scale.

Both losses belong in the denominator on purpose. Churned MRR is revenue from customers who left entirely; contraction MRR is revenue lost when customers stayed but shrank. Counting only cancellations would flatter any product where accounts quietly downsize. Work out the components first with the MRR Calculator, which breaks a month into new, expansion, contraction, and churned MRR — the exact four inputs this tool needs.

A ratio of 1.0 is the break-even line: gains exactly offset losses and the business is flat. The bands above and below it say more about durability than the raw number:

Read the band alongside your stage. Early on, a small base makes the ratio swing wildly — a single lost enterprise account can halve it. It becomes a trustworthy signal once you have enough accounts that no one customer dominates the denominator, and it is most useful tracked as a trend over six to twelve months rather than judged on one month.

These three metrics overlap but answer different questions, and using the wrong one hides problems. Net revenue retentionlooks only at your existing customer base — expansion minus churn and contraction, with new business excluded — so it measures whether the book of business you already have grows on its own. The quick ratio deliberately includes new business, so it measures the whole growth engine: are sales and marketing outrunning the leak?

Churn rate sizes the leak itself as a percentage, with no credit for growth. You want all three: churn rate to understand the leak, NRR to see whether existing customers offset it, and the quick ratio to see whether the business as a whole converts effort into durable revenue. A company can post a strong growth rateand a weak quick ratio at the same time — that combination is the classic signature of growth bought rather than earned.

The ratio has only two levers, and the denominator is usually the cheaper one. Cutting monthly losses from $10,000 to $5,000 does the same thing to the ratio as doubling new MRR — and costs far less than doubling acquisition. In practice that means finding where accounts leave or downgrade (onboarding, a specific plan tier, a segment that never should have been sold), and fixing that before raising spend.

On the numerator, expansion revenue is the highest-leverage input: it lifts gains without adding acquisition cost, which is why land-and-expand businesses post the strongest quick ratios. Check whether growth is actually paying for itself with the CAC Calculator and the Payback Period Calculator— a healthy quick ratio paired with a long payback period still means growth is outrunning cash.

The quick ratio is a durability test, which is exactly what a lender underwrites. A business adding $4 for every $1 it loses has recurring revenue that keeps showing up — the revenue is predictable enough to borrow against and repay from. A business at 1.2 has revenue that may not be there next year, and the same growth costs far more to sustain.

If your ratio is healthy and cash is the only thing capping how fast you can grow, that is the cleanest case for non-dilutive capital: fund sales, marketing, and product from future revenue instead of equity, and repay as that revenue arrives. Founderpath provides revenue-based financing to bootstrapped SaaS founders — capital priced off the durability your metrics already prove, with no dilution, board seats, or loss of control. Compare what that costs against an equity round with the Equity Dilution Calculator.