Revenue Growth: How to Calculate It, and What Fast Actually Looks Like at Each Stage
Every founder quotes a growth rate; few calculate it the same way. Here's the formula, the traps, and what growth actually looked like — on the record — at $6M, $14M, $24M, $96M and $2.5B in revenue.
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Revenue growth rate is the percentage change in revenue between two periods:
Growth rate = (current period revenue − prior period revenue) ÷ prior period revenue × 100A company that did $12M last year and $24M this year grew 100% year over year.
Growth rates are the most gamed number in software because the definition leaves three choices open: the period, the revenue measure, and whether you annualize. Nail those down before you compare anything to anything.
Three ways to measure it (and when each lies)
Compares a full year against the prior year — the honest default, hard to fake, slow to show progress.
Flatters small bases: 20% MoM compounds to nearly 9x a year, which is why early-stage founders quote it.
Compound annual growth rate — (end ÷ start)1/years − 1 — smooths a multi-year run into one number and hides the shape of the curve entirely: a company that tripled then went flat shows the same CAGR as one that grew steadily.
The other quiet trick is the revenue measure. Run-rate growth (this month × 12 vs. a year ago × 12) moves faster than GAAP-revenue growth in both directions. When a founder says “we’re growing 3x,” the first follow-up is always: measured how?
What fast actually looks like, on the record
Benchmarks like “T2D3” (triple, triple, double, double, double after $1M ARR) describe the venture-scale ideal. Real disclosed numbers put flesh on it. Five snapshots from founders and filings, each with a date attached:
| Company | Revenue base | Growth | When disclosed |
|---|---|---|---|
| Workboard | ~$6M | 3–3.5x per year | Sept 2018 |
| Magic Eden | $8M/month | ~2x every two months | May 2022 |
| Webflow | $14M ARR | ~100% YoY, third year running | July 2018 |
| SafetyWing | $24M run rate | 2x YoY | April 2023 |
| Dropbox | $2.548B | +1.9% YoY | FY2024 results |
Each row is a different lesson. Workboard’s 3x at $6M came from enterprise expansion — $50K landings growing to $200K within a quarter. Magic Eden’s doubling-every-two-months was a market-timing story that no company sustains — and theirs didn’t. Webflow’s 100% for three consecutive years is the rarest kind: compounding held constant as the base doubled, which is what “durable growth” means. SafetyWing doubled through a market shock by riding a structural shift (remote work). And Dropbox at 2% shows the far end of every curve: at $2.5B, the questions become margin, buybacks and free cash flow, not growth.
Growth is bought — the question is the exchange rate
Any company can grow faster by spending more; the discipline is knowing your price. Workboard’s Deidre Paknad put a number on hers; Webflow’s Vlad Magdalin ran the opposite trade.
About $1 of sales and marketing for $2.50 of new revenue — loosened deliberately from roughly $5-back the year before, because Paknad was intentionally buying more growth as she scaled the sales team.
With 80% of customers arriving organically and an $85 CAC, Magdalin kept growth at 100% while staying profitable on just $2.9M ever raised.
That exchange rate is what the Rule of 40 formalizes (growth rate plus profit margin should clear 40) — a $2.5B Dropbox growing 2% passes it on margin; a $6M Workboard tripling passes it on growth. Both are healthy. The company growing 40% while burning 60% of revenue is not.
Calculating yours without fooling yourself
- Use trailing-twelve-month revenue for the base — once you’re past $1M, single months are noise.
- Quote YoY as the headline — and MoM only alongside the absolute numbers.
- Annualize consistently — if you said “run rate” last quarter, say it this quarter.
- When growth decelerates — it always does — report it before your board calculates it for you.
The founders above got quoted here precisely because they put real numbers on the record; the habit compounds like the revenue does.
Compare disclosed growth rates across thousands of SaaS companies at getlatka.com/saas-companies.
SourcesFounder disclosures — Workboard (Sept 2018), Magic Eden (May 2022), Webflow (July 2018), SafetyWing (April 2023); Dropbox FY2024 results.