The Ratio That Tells You If MRR Growth Is Real

Calculate a single ratio before you celebrate a rising MRR line: new MRR plus expansion MRR, divided by churned MRR plus contraction MRR. A healthy result means your growth is adding several dollars for every dollar you lose. A weak result means new business is just replacing what walked out the door. Most MSPs never run this math, and that gap is hiding which kind of growth they actually have.

What is the quick ratio, and why does it matter more than the MRR headline number?

The quick ratio is a single efficiency score built from the same MRR movements most recurring revenue reporting already tracks. The formula divides new MRR plus expansion MRR by churned MRR plus contraction MRR for the same period, and a venture investor named Mamoon Hamid popularized a target score of 4 as the bar for healthy, fundable growth when he introduced the metric at SaaStr in 2015. A score at that level means you are adding several dollars of new and expansion revenue for every dollar you lose to churn and contraction. A score close to parity means you are barely replacing what you lose. A score below that means the business is shrinking even while the monthly MRR total still points up, because new signings can mask an existing base that is quietly eroding.

That single number matters more than a rising MRR total because MRR alone cannot tell you which of two very different businesses you are running. A business adding four dollars for every dollar it loses and a business adding one dollar for every dollar it loses can report the exact same ending MRR in a given month. Only the ratio tells you how much of that number came from durable expansion inside accounts you already have, versus new logos covering for an exit door you have not looked at closely.

Why can a high growth number still hide a shrinking business?

Because the ratio only measures the relationship between gains and losses, not how large either side actually is. Analyst Tomasz Tunguz has shown that a company growing 15 percent a month can still hit a quick ratio of 4 while sustaining a monthly contraction and churn rate of 5 percent, which compounds to roughly 46 percent annually if it continues, a churn level that would alarm almost any recurring-revenue business if it were reported on its own. The ratio looked healthy. The underlying client base was hemorrhaging.

The lesson for an MSP is not to distrust the quick ratio. It is to never read it alone. Pull the raw churned and contraction MRR number every time you calculate the ratio, and ask whether that raw figure, not just the ratio built on top of it, is something you would be comfortable explaining to a client advisory board or a buyer. A ratio of 4 built on low, sustainable monthly churn and a ratio of 4 built on the kind of elevated churn Tunguz describes above are not the same business, even though they produce an identical score.

Where are most MSPs actually getting their growth right now?

Mostly from new logos, even as stated priorities shift elsewhere. ScalePad's 2026 MSP Trends Report found that 60 percent of MSPs cite acquiring new clients as their top growth driver, a 13-point increase from the prior year, while growing existing accounts rose to 49 percent, up from 35 percent the year before and now the second most common strategy. Expansion is climbing the priority list. New-logo acquisition is still the larger lever for most of the channel, and that mix matters directly for your quick ratio, because expansion MRR and new MRR sit on the same side of the formula while churn and contraction sit on the other.

The bigger gap is on the loss side of the ratio. The same ScalePad report found that only 35 percent of MSPs track customer churn rate at all, while top-performing MSPs keep client churn at 10 percent or less. If you are not tracking churn, you cannot calculate a quick ratio in the first place, no matter how clean your new and expansion numbers look. An MSP leaning heavily on new-client acquisition without tracking what it is losing on the other side is flying on half the instrument panel, reporting a growing MRR total while having no idea whether the underlying ratio is healthy or alarming.

What should your actual target numbers be?

Two numbers, tracked together, give you a fuller picture than the quick ratio alone. A 2027 revenue-operations framework for managed service providers sets a target of net revenue retention above 105 percent and gross revenue retention above 90 percent, and recommends compensating account managers and client-facing roles on net revenue retention and expansion MRR rather than on new MRR alone. Net revenue retention above full retention means your existing client base is growing even before you sign a single new logo, since expansion inside current accounts is outrunning what contraction and churn take away. Gross revenue retention, which excludes expansion and only measures what you kept, gives you the unvarnished retention number without new business or expansion flattering it.

Put plainly, a quick ratio above 4, an NRR above 105 percent, and a GRR above 90 percent are telling you the same underlying story from three different angles. If one metric looks strong while the others lag, that is the signal worth investigating before you report the headline number anywhere a decision gets made on it.

Consider a hypothetical MSP reporting MRR up for the year, driven mostly by a strong quarter of new-client signings. If its quick ratio turns out to sit closer to 1.5 once churned and contraction MRR get pulled and totaled honestly, and its gross revenue retention lands below 85 percent, the growth is real but fragile. It depends on a steady supply of new logos covering for an existing base that is shrinking underneath it, and that supply is exactly the lever that gets harder to pull in a tighter acquisition market. The same ending MRR, with a quick ratio above 4 and GRR above 90 percent, describes a business compounding on its own client base, which is a materially safer position to be reporting to a board, a lender, or a buyer.

Building this into how your team actually sells and reports

None of this works as a quarterly exercise bolted onto existing reporting. It has to run on the same monthly cadence as your MRR movements, pulled from the same billing and PSA data you already reconcile, with one person accountable for producing the ratio and the retention numbers every month, not just the net total. Tie incentive compensation for account managers and vCIOs to expansion MRR and net revenue retention specifically, not to total MRR growth, so the team closest to existing accounts is rewarded for the side of the ratio that makes growth durable rather than the side that just makes it loud.

That kind of account-level literacy, reading a quick ratio and a retention number rather than just a total, is exactly the gap AI University for MSPs is built to close for teams that are strong at delivery but have never been trained to read recurring revenue this way. If you want to see where your own current client mix sits on new versus expansion revenue before you build this reporting habit, Actiforge's stack builder is a faster way to map that than pulling it manually from a spreadsheet. The broader set of white-labeled tools built to expand revenue inside existing accounts, rather than chase new logos exclusively, is in Actiforge's product catalog.

A rising MRR number by itself was never proof of a healthy business. It only became the headline metric because it is the easiest one to pull from a billing system without doing any further work. Calculate the quick ratio and the retention numbers underneath it, and you will know whether this year's growth is the kind that compounds or the kind that quietly resets every time new-logo acquisition gets harder. See the full stack.