MRR Change Calculator: Percentage Change in Monthly Recurring Revenue
Work out the percentage change in monthly recurring revenue (MRR) between two months — and the net dollar change — the core growth metric for subscription and SaaS businesses.
Adjust the inputs and select Calculate for a full breakdown.
Compare Common Scenarios
How the numbers shift across typical situations for this calculator:
| Scenario | MRR change | Net MRR change |
|---|---|---|
| $40k to $46k (+15%) | 15.00% | 6,000 |
| $100k to $95k (−5%, contraction) | -5.00% | -5,000 |
| $10k to $13k (+30%, early growth) | 30.00% | 3,000 |
| $500k to $525k (+5%) | 5.00% | 25,000 |
How This Calculator Works
Enter your MRR for the previous and current month. The calculator finds the percentage change (your MRR growth rate) and the net dollar change. MRR should count only recurring subscription revenue, normalized to a monthly figure (annual plans divided by 12), excluding one-time fees.
The Formula
Percentage Change
Old is the starting value, New is the ending value
Worked Example
MRR rising from $40,000 to $46,000 is a 15% increase — a net $6,000 more in monthly recurring revenue. MRR growth rate is the heartbeat of a subscription business, but the net change hides the moving parts beneath it: new MRR (from new customers) and expansion MRR (upgrades) push it up, while contraction MRR (downgrades) and churned MRR (cancellations) pull it down. A healthy 15% net growth could mask heavy churn offset by strong acquisition — so the components matter as much as the headline.
Key Insight
MRR change is the top-line subscription growth number, but the real insight is in decomposing it, because the same net change can reflect very different business health. Net new MRR = new MRR + expansion MRR − contraction MRR − churned MRR. A company growing 15% net while losing a lot to churn is in a weaker, more expensive position than one growing 15% with low churn and strong expansion — the first is filling a leaky bucket with costly acquisition, the second is compounding efficiently. This is why SaaS operators watch net revenue retention (expansion minus contraction and churn among existing customers): when expansion from upgrades exceeds losses, existing customers grow revenue on their own (net retention above 100%), the hallmark of the best subscription businesses. A few related points: MRR should be normalized (annual contracts ÷ 12, exclude one-time fees) for an apples-to-apples figure; ARR (annual recurring revenue) is just MRR × 12; and MRR growth compounds, so a steady monthly growth rate produces dramatic annual results (15% monthly is rarely sustainable, but even modest compounding MRR growth is powerful). Pair the MRR change here with the new/expansion/contraction/churn breakdown and with customer churn rate to know whether your growth is healthy and durable or propped up by spending faster than you retain.
Frequently Asked Questions
How is MRR change calculated?
Subtract the previous month's MRR from the current month's, divide by the previous, and multiply by 100. From $40,000 to $46,000 is (46,000 − 40,000) / 40,000 = 15%, a net $6,000 increase in monthly recurring revenue.
What counts as MRR?
Only recurring subscription revenue, normalized to a monthly figure — divide annual plans by 12 and exclude one-time fees (setup, professional services, one-off charges). Consistent normalization is essential so the MRR figure is comparable month to month and reflects true recurring revenue.
What are the components of MRR change?
Net new MRR = new MRR (new customers) + expansion MRR (upgrades) − contraction MRR (downgrades) − churned MRR (cancellations). The headline net change can hide these — a 15% net gain might mask heavy churn offset by strong acquisition. Tracking the components reveals the real health of growth.
What is net revenue retention?
It measures revenue change from existing customers only — expansion minus contraction and churn. Above 100% means existing customers grow your revenue on their own (upgrades outweigh losses), the hallmark of strong subscription businesses. It's a key complement to MRR growth, showing whether you rely on new sales or compound existing ones.
How does MRR relate to ARR?
ARR (annual recurring revenue) is simply MRR × 12. MRR is the monthly view, ARR the annualized view of the same recurring revenue. MRR growth also compounds, so a sustained monthly growth rate produces large annual gains — though high monthly rates are hard to sustain as the base grows.
Related Calculators
Methodology & Review
The change is the difference between the new and old MRR divided by the old MRR, multiplied by 100. It compares two months' recurring revenue and does not break the change into its components (new, expansion, contraction, churned MRR).
Written by Ugo Candido · Last updated May 22, 2026.