finance
MRR (Monthly Recurring Revenue)
Monthly subscription revenue, normalized to a recurring base. The headline SaaS metric.
Definition
MRR is the sum of all monthly recurring subscription revenue, normalized to a per-month basis (annual subscriptions divided by 12). It excludes one-time fees, professional services, and other non-recurring revenue. MRR is the most-watched metric in SaaS because it's predictable, scalable, and directly tied to valuation. MRR growth is decomposed into: new MRR (new customers), expansion MRR (upsells from existing), contraction MRR (downgrades), and churned MRR (lost customers). Net MRR growth = new + expansion - contraction - churn.
What counts as MRR and what does not
MRR includes recurring subscription revenue: monthly plans (full amount), annual plans (annual contract value divided by 12), and add-ons billed monthly or annually. MRR excludes one-time fees (setup, implementation, training), professional services (custom development, consulting), usage overages that are not predictable, and discounts not yet expired (use net of discount). The cleanest US SaaS accounting separates committed MRR (contracted) from usage-based MRR (variable) and reports both. Stripe, ChartMogul, Baremetrics, and ProfitWell automate the calculation if your billing is on Stripe, Chargebee, or Recurly.
The five components of MRR movement
Every month, MRR moves through five components. New MRR: subscriptions started in the period. Expansion MRR: upgrades, seat additions, and overages from existing customers. Reactivation MRR: customers who churned and came back. Contraction MRR: downgrades and seat reductions (negative). Churned MRR: cancellations (negative). Net new MRR = New + Expansion + Reactivation - Contraction - Churned. Reporting these five components on a single waterfall chart each month is the standard US SaaS operating cadence. Decomposing growth reveals different stories: a SaaS growing 20 percent on new MRR but losing 15 percent to churn is much weaker than one growing 10 percent net with strong retention.
MRR versus ARR versus revenue
MRR is monthly. ARR (Annual Recurring Revenue) is MRR x 12, used for annual reporting and SaaS valuation. Both differ from GAAP revenue. Under ASC 606, GAAP revenue is recognized as service is delivered, not as cash is collected, but for monthly subscriptions delivered evenly, GAAP revenue equals MRR. Annual subscriptions billed upfront create deferred revenue on the balance sheet that releases to revenue over 12 months. Investors look at MRR/ARR for growth analysis, GAAP revenue for financial statements, and bookings (total contract value of new sales) for sales forecasting. A clean SaaS dashboard reports all three.
MRR pitfalls and how to avoid them
Three common errors. One, including one-time services and setup fees in MRR - this inflates the headline and creates a credibility problem when investors recalculate. Two, recognizing annual contract value as MRR in month one rather than dividing by 12 - this overstates growth and creates a future shortfall. Three, not adjusting MRR when a customer downgrades mid-month - the contraction should be recognized in the month it happens, not the next billing cycle. Audit MRR quarterly by reconciling to GAAP revenue. The gap should be explainable through deferred revenue movement, one-time fees, and timing of bookings versus billings.
FAQ
What is a good MRR growth rate for a US SaaS startup?
Depends on stage. Seed-stage US SaaS commonly grows MRR 15 to 30 percent month-over-month off a small base. Series A targets 10 to 15 percent monthly. Series B and beyond, growth typically slows to 5 to 10 percent monthly. The famous T2D3 framework (triple, triple, double, double, double) describes ARR going from 2M to 100M+ over 5 years, which requires 200 percent year-one growth followed by sustained 100 percent and then 50 percent annual growth. Most US SaaS companies do not hit these benchmarks - top decile do.
Should I commit to MRR or ARR in investor conversations?
Use whichever frames your business best, but always be ready to translate. Early-stage SaaS often quotes MRR because the numbers are bigger-looking month-over-month. Later-stage and enterprise SaaS quote ARR because customers buy in annual commits. The norm: under 1M ARR, lead with MRR. Over 1M ARR, lead with ARR. Investors will mentally do the math anyway, so consistency matters more than which one you choose.
How do annual plans paid upfront affect MRR reporting?
Divide the annual price by 12 and recognize the result as MRR for each of the next 12 months. The cash collected is bookings (or deferred revenue on the balance sheet), not MRR. This distinction matters for cash flow versus growth narrative. A SaaS that aggressively sells annual plans has strong bookings, healthy cash flow, but slower MRR growth than the cash inflows suggest. Investors look at both bookings and MRR; sophisticated ones look at the cash flow statement too.
Is MRR taxable when collected or when recognized?
Cash basis: taxable when collected. Accrual basis: taxable when revenue is recognized (matches GAAP). US SaaS startups commonly use accrual for management reporting and cash for tax filing, requiring a Schedule M reconciliation on the tax return. The IRS Section 451 deferral provisions allow some flexibility for advance payments, but consult a CPA - the rules are nuanced and changed under TCJA in 2017.
What about MRR for non-SaaS recurring revenue?
MRR concepts apply broadly to any business with predictable recurring revenue: subscriptions, retainers, memberships, recurring services. A US marketing agency on monthly retainer can track MRR exactly like a SaaS company. A law firm on hourly billing cannot. The cleanest test: if the customer pays you the same predictable amount each month without you having to re-sell, it counts as MRR. Mixing project revenue and retainer revenue confuses the metric; separate them in reporting.
In your business
- →Decompose MRR growth weekly - the components tell different stories
- →Net MRR Retention (NRR) above 100% means existing customers grow faster than they churn - the holy grail
- →ARR = MRR x 12, used for annual reporting