SaaS Growth Efficiency Scorecard
Is your SaaS growing efficiently, or just growing? Enter your numbers and grade the five metrics investors and boards actually judge — the Rule of 40, the SaaS Magic Number, net revenue retention, LTV:CAC, and CAC payback — in one health score.
Any one SaaS metric can flatter you. A 4:1 LTV:CAC hides a 20-month payback; 200% growth hides a magic number under 0.5. This scorecard grades all five against their benchmarks and rolls them into a single 0–100 health score, so you can see at a glance where growth is efficient and where it leaks — before you decide to pour in more spend.
SaaS efficiency inputs and result
| Metric | Your value | Benchmark | Verdict |
|---|
How to use this scorecard
- Enter growth and margin.Year-over-year recurring-revenue growth plus your profit margin (free cash flow or EBITDA) give the Rule of 40. Margin can be negative for high-growth companies — that’s the trade-off the rule is built to catch.
- Add net new ARR and S&M spend.Net new ARR over the year divided by the prior period’s sales-and-marketing spend gives the Magic Number — how much recurring revenue each go-to-market dollar buys.
- Enter your net revenue retention.NRR grades how well the base expands after churn. Above 100% it compounds on its own; 120%+ is best-in-class.
- Add LTV, CAC, and payback.Lifetime value over acquisition cost gives LTV:CAC (aim for 3:1+); CAC payback is the months of gross margin to earn the acquisition cost back (aim for under 12).
- Read the health score, then export.Each metric is graded against its benchmark and averaged into a 0–100 health score with a letter grade. Use the breakdown to find the weakest link, then copy a share link, download the CSV, or print a one-page PDF.
RGM Expert Says
We reach for this scorecard before we touch a single channel. When a SaaS team asks us to “drive more pipeline,” the first question isn’t which ad to run — it’s whether the business is efficient enough that more acquisition even helps. Pour budget into a company with 95% net revenue retention and a 20-month payback and you don’t get growth; you get a faster leak.
The reason we grade all five together is that any one of them lies in isolation. A founder shows us a 200% growth rate and we show them a Magic Number of 0.4 — the growth is real, but it’s bought, not earned, and it won’t survive a tighter market. Another team is proud of a 5:1 LTV:CAC while their CAC payback sits at 22 months; the ratio looks elite, but the cash never comes back fast enough to fund the next cohort. The composite score exists to stop cherry-picking — it forces the honest conversation about where the model is strong and where it’s propped up.
The single input people get wrong is NRR. Teams quote gross retention, or a blended number that hides a leaky segment. Split it: enterprise NRR of 125% can mask an SMB base churning at 3% a month. When the weakest-metric readout points at retention, that’s almost always where the next quarter’s work belongs — because you can’t outspend churn, and this tool is designed to make that impossible to ignore.
How it works
The scorecard grades five metrics, each against a widely-used SaaS benchmark, then averages the five 0–100 sub-scores into one health score. Here are the formulas:
Each metric earns a sub-score that hits 100 at its benchmark and scales down below it:
- Rule of 40 — 100 at 40; a score of 20 earns 50. Benchmark: ≥ 40.
- Magic Number — 100 at 0.75. Benchmark: ≥ 0.75 to invest; below ~0.5, fix efficiency first.
- Net revenue retention — 100 at 120%, 50 at 100%, 0 at 80%. Benchmark: ≥ 100%, elite ≥ 120%.
- LTV:CAC — 100 at 3.0. Benchmark: ≥ 3:1.
- CAC payback — 100 at 12 months or faster, 0 at 24. Benchmark: < 12 months.
Benchmarks are drawn from widely-cited SaaS sources: the Rule of 40 (Brad Feld, 2015) and Bessemer’s State of the Cloud; the Magic Number (Scale Venture Partners); NRR benchmarks (SaaS Capital, Bessemer); and LTV:CAC and payback (David Skok, SaaS Metrics 2.0). The composite weighting is RGM’s own framing, for education, not a valuation.
The market now pays for efficiency, not just growth
For a decade, SaaS was graded on growth alone. That era is over. When capital got expensive, public and private markets repriced software on efficient growth — the companies that grow and keep more of what they earn. The Rule of 40 became the shorthand for that balance, and net revenue retention became the tell for whether growth compounds or has to be re-bought every year.
The trap is optimizing one metric while another quietly fails. Chase growth with a falling Magic Number and you’re buying revenue that won’t survive a downturn. Celebrate a high LTV:CAC while payback stretches past 18 months and you starve the cash that funds the next cohort. Post 115% NRR on a base that’s losing 18% of logos a year and expansion is just papering over the drain. Grading the five together is how you catch the trade-off before the board does.
That’s the whole point of a composite score: it resists the single-metric story. Use it as a quarterly pulse, a diligence check before you raise, or a filter before you scale spend — and pair it with the deeper guide on the SaaS marketing page, where the efficiency scoreboard sits inside the full retention-first growth model.
What good looks like
Anchor every number against its segment — enterprise, mid-market, and SMB SaaS behave very differently. Use these as reference points, not gospel.
| Metric | Healthy benchmark | Best-in-class |
|---|---|---|
| Rule of 40 | ≥ 40 | 50–60+ |
| SaaS Magic Number | ≥ 0.75 | ≥ 1.0 |
| Net revenue retention | ≥ 100% | ≥ 120% |
| LTV : CAC | ≥ 3 : 1 | 4–5 : 1 |
| CAC payback | < 12 mo | < 6 mo |
What the SaaS field says
“Retention is the foundation of all growth.” Fix the leaky bucket before you widen the tap.
“You don’t get paid back for the cost of acquiring a customer until many months later.” Cash timing is the SaaS killer.
A combined growth-plus-margin score of 40% separates the cloud companies that compound from the ones that just spend.