MRR Growth Rate Calculator
Recurring revenue is the engine; its growth rate is the tachometer. Drop in where your MRR started and ended, and this tool reads back the monthly pace, the net new dollars driving it, and what that rhythm compounds to across a full year.
MRR growth rate = (ending MRR − starting MRR) ÷ starting MRR × 100%. It measures how fast your recurring revenue base is compounding each month. The dollars behind it are net new MRR — new plus expansion minus contraction and churn. A pace above 10% a month is strong at early stage but mathematically impossible to hold forever; as the base grows, the same dollar gain becomes a smaller percentage, so watch net new MRR alongside the rate.
MRR Growth Rate Calculator inputs and result
How to use this calculator
- Normalize your MRR firstConvert annual and multi-year contracts to a monthly figure (annual value divided by twelve) and strip out one-time fees, setup charges, and usage overages. MRR should only count the predictable, recurring portion.
- Enter the starting balanceUse MRR on the first day of the period. For a clean read, pick whole months and the same boundary you will use again next period.
- Enter the ending balanceUse MRR on the last day, after every new sale, upgrade, downgrade, and cancellation has landed. The difference is your net new MRR.
- Read the rate against your stageThe verdict scores the monthly pace, but judge it by stage: 15% a month is ordinary at seed and extraordinary at scale. The annualized figure shows the power of compounding if you hold the rhythm.
- Export for the board deckCopy a share link, pull the CSV into your model, or print a one-page summary for the growth review.
RGM Expert Says
The first thing we do with a new SaaS client is make their MRR honest, because a surprising number of growth rates are inflated by counting things that are not recurring. Setup fees, professional services, and usage spikes all sneak into the number and make a flat month look like a good one. Once MRR is normalized, the growth rate finally measures the engine instead of the noise.
We pair the rate with net new MRR on purpose, because percentages lie as a company scales. A founder celebrating ‘still growing 12% a month’ sometimes does not notice that net new dollars have been flat for two quarters — the percentage only held because the base stopped growing too. The dollar figure is the leading indicator; the rate is the lagging summary.
The most useful conversation the tool starts is about deceleration. Every company’s monthly growth rate falls over time — that is arithmetic, not failure. The job is to decide whether the deceleration is healthy maturation or a top-of-funnel problem, and the way we tell them apart is by decomposing the number into new logos versus expansion. When expansion carries growth, deceleration is fine; when new logos stall, it is a signal.
How it works
MRR growth rate is a simple period-over-period change: the net dollars you added divided by where you started.
- Starting MRR — normalized monthly recurring revenue at the start of the period.
- Ending MRR — normalized MRR at the end, after all new, expansion, contraction, and churn.
- Net new MRR — the dollar change; the leading indicator behind the percentage.
Worked example: MRR rises from $50,000 to $56,000. Growth = (56,000 − 50,000) ÷ 50,000 = 12.0% for the month; net new MRR is $6,000; held for twelve months it compounds to roughly 290% annualized. The full breakdown lives in the MRR deep dive.
Why the rate decelerates — and why that is normal
Every healthy SaaS company watches its monthly growth rate fall over time, and the reason is pure arithmetic. The same $6,000 of net new MRR is 12% on a $50,000 base but only 2% on a $300,000 base. This is why investors look at net new MRR alongside the rate: the dollars can keep rising even as the percentage drops. Confusing the two is one of the most common mistakes in SaaS reporting.
The rate also hides which engine is doing the work. Two companies can both grow 8% a month while one runs on new logos and the other on expansion revenue from existing accounts. Expansion-led growth is cheaper and stickier, so decomposing the rate into its components — new, expansion, contraction, churned — tells you more than the headline ever will. The MRR quick ratio captures that efficiency in a single number.
Finally, the growth rate is the numerator in the most-watched SaaS scorecard, the Rule of 40, where growth plus profit margin should clear forty. A company growing 12% a month is buying enormous slack on the profitability side of that equation. Track the rate not as a vanity figure but as one input into whether the whole business is compounding efficiently.
What MRR growth looks like by stage
Growth rate is only meaningful next to stage and base size. These are widely cited rules of thumb, not laws — a tiny base can post rates a large one never could.
| Stage / ARR | Healthy MoM growth | Note |
|---|---|---|
| Pre-seed / under $1M ARR | 15–20%+ | Small base; rates look huge |
| Seed to Series A | 10–15% | The famous T2D3 pace lives here |
| Growth ($10M–$50M ARR) | 5–10% | Dollars matter more than rate |
| Scale ($100M+ ARR) | 3–5% | Net new MRR is the real story |
What operators say about MRR growth
The best SaaS companies grow by tripling revenue for two years, then doubling for three — the T2D3 path — but the dollars of net new revenue are what separate the durable from the lucky.
Growth rate is the single most important metric for an early-stage startup; a good rate is around 5–7% a week, and a great one is 10%.