Free ForeverNo SignupT2D3 ModellingUpdated 2026

Startup Growth Calculator

Calculate the exact growth rate needed to hit your ARR target — and whether your current trajectory gets you there.

T2D3 (Triple, Triple, Double, Double, Double) is the benchmark for Series A → IPO ARR growth: $1M → $3M → $9M → $18M → $36M → $72M. This translates to specific monthly growth rates. This calculator tells you exactly what monthly growth rate you need to hit your target.

Current ARR

Annual Recurring Revenue right now

Target ARR

ARR goal you want to reach

Timeframe (Months)

How many months to reach target ARR

Current MoM Growth RateOptional — compares actual vs required

Your actual MoM growth over the last 3 months

The Formula

MoM Growth = (Target ÷ Current)^(1/Months) − 1

In plain English

Required monthly growth rate = (Target ARR / Current ARR)^(1/months) − 1. CAGR = required MoM^12 − 1.

Worked Example

$500K → $3M in 24 months. MoM = (3M/500K)^(1/24) − 1 = 6^(1/24) − 1 = 7.5% MoM. CAGR = 1.075^12 − 1 = 137%.

T2D3: The Venture-Grade Growth Benchmark

T2D3 (Triple, Triple, Double, Double, Double) describes the ARR growth path from $1M to $100M+ that characterises venture-scale SaaS companies. Starting from $1M ARR, you triple twice, then double three times: $1M → $3M → $9M → $18M → $36M → $72M.

This translates to roughly 15–20% MoM in the triple years and 8–10% MoM in the double years. Most companies are on T2D3 at Series A — if you're ahead, you'll have an excellent Series B story.

T2D3

Venture-grade ARR growth benchmark

3× ARR

Target annual growth at Series A

2× ARR

Target annual growth at Series B

$1M

Typical ARR at T2D3 starting point

ARR Growth Benchmarks by Stage (2026)

ARR Range	Target MoM	Annual Growth	Stage
$100K–$1M	10–20%	200–700%	Pre-seed / Seed
$1M–$5M	8–15%	150–435%	Seed / Series A
$5M–$20M	5–10%	79–214%	Series A / B
$20M–$100M	3–6%	43–100%	Series B / C

Source: Bessemer Venture Partners Atlas 2025 · OpenView SaaS Benchmarks 2024

Common Mistakes

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Measuring growth on small numbers

Going from $10K to $30K ARR is 200% growth but meaningless for investors. Growth rate matters when absolute numbers are significant enough to indicate product-market fit.

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Smoothing over growth slowdowns

Presenting TTM (trailing twelve months) growth hides recent deceleration. Investors want to see MoM growth for the last 3–6 months. A decelerating growth trend is a red flag even if annual growth looks strong.

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Confusing gross and net ARR growth

Gross ARR growth (new bookings only) looks better than net ARR growth (new minus churn). Report net ARR growth: if you're adding $100K but churning $50K, your net new ARR is $50K — that's what matters.