What is MRR?
The MRR calculator above turns two simple inputs — your number of paying customers and your average monthly price — into your Monthly Recurring Revenue. MRR is the predictable, normalized subscription revenue your business earns every month. It is the single most important top-line number for most SaaS companies because, unlike one-off sales, it is repeatable and forecastable.
MRR strips out the noise of annual prepayments, one-time setup fees, and usage spikes so you can see the steady core of the business. When you hear a founder say “we’re at $20k MRR,” they mean the business is on track to bring in roughly that amount every month from active subscriptions.
Unlike total revenue, MRR isolates the subscription component of the business. A company might collect a large professional-services payment one month and look highly profitable, while its true recurring base stagnates. MRR cuts through that noise and reveals the durable revenue engine underneath. This is why investors, board members, and operators almost universally track MRR rather than total revenue for growth-stage subscription businesses.
MRR also sits at the foundation of your entire SaaS metrics stack. ARR is simply MRR ×12. MRR growth rate measures how fast the base is expanding. Customer Lifetime Value depends on the revenue each customer contributes per month. Net Revenue Retention tracks how the MRR from existing customers evolves over time. Getting MRR right — normalized, clean, and consistently defined — cascades upward into every other metric you rely on.
The formula
MRR = number of active customers × average monthly price per customer- Active customers — only currently paying subscriptions. Exclude trials, churned accounts, and paused subscriptions. A customer on a free plan who has never converted should not be counted.
- Average monthly price — total monthly subscription revenue divided by active customers. For annual plans, divide the annual contract value by 12 before averaging. For multi-seat licenses, use the total monthly billing amount for the account, not the per-seat price.
Common edge cases to handle correctly:
- Annual contracts: divide the annual amount by 12 and include in each month’s MRR, not only at the time of payment. Counting the full year at signing inflates the month of signing and understates all subsequent months.
- Usage-based pricing: many teams use committed minimum spend as the MRR base, then treat usage overage as non-recurring revenue. This is a reasonable approach as long as it is applied consistently.
- Discounts and credits: use net billed amount, not list price. Counting MRR at list price and separately tracking discounts gives a false sense of the revenue base.
- Refunds: subtract refunds from the MRR of the period they were issued, not the original billing period.
Worked example
Suppose you have 100 active customers paying an average of $50/month. Your MRR is:
100 × $50 = $5,000 MRRThat same business has an implied Annual Recurring Revenue (ARR) of $5,000 × 12 = $60,000.
Now consider what happens as the business grows and pricing diversifies. Say 60 customers are on the $30/month starter plan and 40 are on the $80/month pro plan. Average monthly price is still $(60 × $30 + 40 × $80) / 100 = ($1,800 + $3,200) / 100 = $50, so MRR remains $5,000. The formula holds regardless of how many pricing tiers you have — the average price does the blending for you.
What changes if 20 of those customers upgrade to a $120/month enterprise plan? New MRR becomes (40 × $30 + 40 × $80 + 20 × $120) = $1,200 + $3,200 + $2,400 = $6,800. That $1,800 increase in MRR is expansion MRR — existing customers growing in value — and it is the most capital- efficient kind of growth a SaaS business can have.
Benchmarks
MRR itself is an absolute number, so the useful benchmark is its growth rate. Early-stage SaaS companies commonly target 10–15% month-over-month MRR growth; sustaining that compounding rate is what separates fast-growing products from stagnant ones. As companies scale past a few million in ARR, healthy monthly growth naturally settles into the low single digits.
In terms of absolute milestones, $10K MRR ($120K ARR) is often where early-stage founders feel the product is working. $83K MRR ($1M ARR) is the first significant fundraising and credibility milestone in SaaS. $833K MRR ($10M ARR) marks the transition to growth-stage operations with dedicated sales teams and structured customer success. Beyond that, monthly MRR growth in the 1–3% range at scale is healthy for a business compounding toward the $100M ARR tier.
How to interpret and improve it
MRR moves through five levers: new business, expansion (upgrades), reactivation, contraction (downgrades), and churn. Understanding which lever is driving or dragging your MRR is far more actionable than watching the total number alone.
To grow MRR efficiently, focus first on reducing contraction and churn — retained revenue compounds, whereas constantly replacing lost customers is expensive. At 5% monthly churn, you are replacing half your customer base every year just to stay flat. At 1% monthly churn, the same sales effort produces meaningful net growth.
Next, build expansion revenue through seat-based or usage-based pricing so existing accounts grow with you. This is what pushes Net Revenue Retention above 100% — the point at which your customer base grows revenue on its own, without requiring any new-customer acquisition. Only then does pouring more into new-customer acquisition pay off, because you are filling a bucket that no longer leaks.
Common mistakes when working with MRR:
- Inflating MRR with annual contracts counted in full at signing creates a volatile, misleading chart that swings with contract timing rather than business fundamentals.
- Including one-time setup fees or professional services revenue contaminates the recurring base and makes month-to-month comparisons meaningless.
- Failing to segment MRR by plan or cohort hides whether growth is coming from new business or expansion, and prevents you from identifying which customer profiles are most valuable.
When MRR growth slows, the instinctive response is to increase marketing spend. Before doing that, decompose MRR into its components. In many stalled businesses, new MRR is actually healthy — the drag is a hidden contraction problem or rising churn that is quietly neutralizing the wins at the top of the funnel.
Frequently asked questions
What is MRR? Monthly Recurring Revenue is the predictable subscription revenue your business earns every month, normalized to a monthly amount.
How is MRR calculated? Multiply your number of active subscriptions by the average monthly price per subscription.