ARR growth rate is current ARR minus ARR twelve months ago, divided by ARR twelve months ago, times 100: growing from $1.0M to $1.8M is 80% year-over-year growth. Enter both figures below to see your growth rate, projections and the years needed to reach a target.
Annual Recurring Revenue (ARR) growth rate is the single most important metric for SaaS fundraising and benchmarking. Investors, analysts, and buyers all start with this number — how fast are you growing your predictable annual revenue?
How to calculate ARR growth rate
ARR growth rate = ((Current ARR − Previous ARR) / Previous ARR) × 100
If your ARR was $600k a year ago and is $1.2M today, your YoY growth rate is 100%. You doubled in 12 months — which is the first threshold of the T2D3 framework.
What is T2D3?
T2D3 is a benchmark path for high-growth SaaS companies, popularized by Neeraj Agrawal at Battery Ventures. Starting from ~$1–2M ARR, the path is: - Year 1–2: Triple ARR (300% of starting ARR) - Year 3–5: Double ARR each year
A company that hits T2D3 from $1M ARR reaches: $3M → $9M → $18M → $36M → $72M over five years. This trajectory is what top-tier VCs look for when evaluating Series B and later-stage SaaS investments.
Rule of 72 for ARR doubling time
A quick mental shortcut: divide 72 by your annual growth rate to estimate how many years to double. At 50% growth, you double every 1.4 years. At 25%, every 2.9 years. At 10%, every 7.2 years.
Benchmarks by ARR stage
| ARR stage | Expected growth | Excellent |
|---|---|---|
| < $1M | 100%+ | 200%+ |
| $1M–$5M | 80–150% | 200%+ |
| $5M–$20M | 60–100% | 150%+ |
| $20M–$50M | 40–80% | 100%+ |
| $50M+ | 25–50% | 70%+ |
Growth naturally slows as ARR increases — the denominator gets larger. That's why investors look at growth efficiency (ARR growth / net burn) rather than growth rate alone at later stages.
How to use this calculator
Enter your current ARR and your ARR from 12 months ago. The calculator shows your YoY growth rate, 3- and 5-year projections if you maintain this rate, and the number of years to reach any target ARR you set.
Worked example
ARR was $1,000,000 a year ago and is $1,800,000 today: growth is 80% and net new ARR is $800,000. To reach $10,000,000 at a steady 80%, you need about 2.9 years; at 100% growth it takes about 2.5 years.
Frequently asked questions
How do you calculate ARR growth rate? Subtract ARR from twelve months ago from current ARR, divide by the earlier figure and multiply by 100.
What is a good ARR growth rate? It depends on scale: 100% or more below $1M ARR, 80 to 150% between $1M and $5M, and 25 to 50% above $50M. Growth slows as the base gets larger.
Is ARR growth the same as revenue growth? No. ARR measures contracted recurring revenue at a point in time; recognized revenue includes one-off items and lags behind ARR.
How long to reach a target ARR? Take the log of target over current ARR and divide by the log of one plus the growth rate. The calculator does this when you set a target.
What is T2D3? A benchmark path of tripling ARR twice and then doubling it three times, starting from about $1M.
What does this calculator do? Calculate your Annual Recurring Revenue growth rate, T2D3 trajectory, and years to reach your ARR target.