What is MRR Growth Rate?
The MRR growth rate calculator above measures the percentage change in Monthly Recurring Revenue between two consecutive months. Month-over-month MRR growth rate is the clearest real-time signal of business momentum. It tells you not just whether revenue is growing, but how fast — and because it is measured every 30 days, it gives you the fastest feedback loop available to a SaaS operator.
Unlike ARR growth, which is reported annually and lags reality by months, MRR growth rate lets you catch inflection points — a sudden acceleration from a campaign, or a deceleration caused by an unnoticed churn spike — while you still have time to react.
MRR growth rate also sits at the intersection of two forces that often move in opposite directions: the expansion and acquisition engine on one side and churn and contraction on the other. A company adding $20K in new MRR per month but losing $18K to churn has a 1% growth rate, not a 20% one. The metric forces that arithmetic to the surface, which is exactly why investors ask for it rather than just raw MRR in pitch decks.
Relative to ARR growth rate, MRR growth rate is a leading indicator. If your MRR growth rate starts declining in Q1, your year-over-year ARR growth rate will begin to show the same trend by Q3 or Q4. Tracking MRR growth monthly gives you a six-month head start on problems that would otherwise only become visible in annual reporting.
The formula
MRR Growth Rate = ((Ending MRR − Starting MRR) / Starting MRR) × 100- Starting MRR — your MRR at the beginning of the period (e.g., first day of the month or last day of the prior month, whichever you use consistently).
- Ending MRR — your MRR at the end of the period (e.g., last day of the same month).
The result is expressed as a percentage. A negative result means MRR shrank; a result above zero means it grew.
What to include and exclude: Both the starting and ending MRR figures should be true normalized MRR — that means annual contracts divided by 12, one-time fees excluded, trials excluded, and churned accounts removed. Calculating the growth rate on inflated starting or ending MRR figures will produce a distorted rate that does not reflect actual recurring business momentum.
For businesses with significant seasonality, tracking a 3-month rolling average of MRR growth rate smooths out one-off spikes from promotions or seasonal demand and gives a cleaner signal of the underlying trend.
Worked example
Suppose MRR was $10,000 at the start of the month and $12,000 at the end:
(($12,000 − $10,000) / $10,000) × 100 = 20% MRR growthA 20% month-over-month growth rate sustained for 12 consecutive months would compound to roughly 8.9× — turning that $10,000 MRR into about $89,000 MRR in one year.
To see what changes at a different growth rate: if MRR grew from $10,000 to $10,500 instead of $12,000, the rate would be 5%. Maintaining 5% monthly growth for 12 months compounds to 1.8×, taking MRR to roughly $18,000. The same starting position, but 5× less MRR after one year compared to the 20% scenario. This is why small differences in monthly growth rates have enormous compounding consequences over a 12-to-24 month time horizon.
If instead MRR declined from $10,000 to $9,500, the growth rate would be -5%. Sustained negative growth is a serious signal requiring immediate investigation of churn, contraction, and whether the product is retaining the value proposition that drove initial conversions.
Benchmarks
Early-stage SaaS companies often target 5–15% month-over-month MRR growth, though this varies widely by stage and market. YC-backed companies at the seed stage frequently aim for 5–7% per week during their most intensive growth phase. Once a company reaches $1M ARR, sustaining even 10% monthly growth becomes significantly harder and 3–5% is respectable. At $10M+ ARR, month-over-month growth in the low single digits typically signals a healthy, maturing business.
Segment-specific benchmarks are more useful than a single industry number:
- Pre-revenue to $100K ARR: 15–25% monthly is realistic if there is genuine product-market fit.
- $100K–$1M ARR: 10–15% monthly is the top-quartile range; median is closer to 5–7%.
- $1M–$10M ARR: 5–10% monthly is strong; below 3% monthly signals the need to revisit acquisition channels or pricing.
- $10M+ ARR: 2–5% monthly is respectable; the law of large numbers makes double-digit monthly growth increasingly rare.
How to interpret and improve it
A consistently high MRR growth rate is the most fundable signal in early-stage SaaS. However, the quality of the growth matters as much as the number. Growth driven by aggressive discounting or high-churn cohorts will erode quickly; growth driven by word-of-mouth or a strong onboarding funnel compounds. A 15% growth rate where 12% comes from expansion revenue is structurally far more valuable than 15% growth driven entirely by new-logo acquisition.
If growth is stalling, decompose MRR into its five components — new MRR, expansion MRR, reactivation MRR, contraction MRR, and churned MRR — and look for where the leak is. In many stalled businesses, the problem is not weak new-business acquisition but a hidden contraction problem: customers downgrading rather than canceling outright.
Common mistakes:
- Celebrating a high growth rate without inspecting the cohort retention underneath it. Two months of rapid new-logo acquisition can mask accelerating churn in older cohorts.
- Mixing calculation periods — comparing a “growth rate” based on 45 days of data to a benchmark based on 30-day periods.
- Failing to normalize for seasonality. Many B2B SaaS businesses see a natural December dip and a January surge; comparing December to November without that context looks like deceleration followed by a turnaround.
Comparing your growth rate to a simple moving average (e.g., 3-month average) helps distinguish seasonal blips from true trend changes. If the 3-month average is declining for three consecutive months, that is a structural trend, not noise.
Frequently asked questions
What is a good MRR growth rate? Early-stage SaaS companies commonly target 5-15% month-over-month MRR growth, with the higher end typical of hypergrowth startups. This varies widely by stage and market.
How is MRR growth rate calculated? Subtract starting MRR from ending MRR, divide by starting MRR, and multiply by 100.