Why it matters
Growth Rate without unit economics is how operators delude themselves.
Growth Rate is the most-reported metric in SaaS and the one most likely to let you lie to yourself. The reason is simple: it's the metric the outside world cares about, so it's the metric founders optimize for, and it can be juiced in the short term by spending more on acquisition without any regard for whether those customers will pay back the cost of acquiring them. If you're growing 50-75% but your CAC payback is 5 years and your customer lifetime is 3 years, you're losing money on every customer — and the growth rate doesn't tell you that. The growth rate looks great. The business is broken.
At PipelineCRM, growth got harder as we got bigger — and that pattern is universal. We grew fast in our first 5 years as a smaller business, when the law of small numbers was on our side. We grew at a medium clip from year 5 to year 10 as we got into the middle range. And by the final 5 years, growth had flattened. The bigger you get, the harder it is to achieve high growth rates. A $1M business can double to $2M with a single good quarter. A $7M business can't double on a single good quarter. This isn't a failure — it's math. But it does mean the right question to ask when growth decelerates isn't "are we broken?" but "are we still growing at a rate that matches our cost structure and the economics underneath?"
The thing I'd do differently from PipelineCRM — and the thing I see most operators miss in the $1M-$10M range — is digging into growth at the channel level alongside CAC and CAC payback. Growth from word-of-mouth and customer referrals is structurally different from growth bought through paid channels. The former compounds; the latter has to be re-bought every period. Reporting a blended growth number tells you the company grew. It doesn't tell you whether the growth is the kind that scales or the kind that drains the bank account.