MRR (Monthly Recurring Revenue)

MRR (Monthly Recurring Revenue) is the total predictable monthly revenue from all active subscriptions, normalized to a per-month basis. The formula: MRR = Sum of Monthly Subscription Revenue (annual contracts divided by 12, quarterly by 3).

MRR is the heartbeat of subscription businesses. It's what investors evaluate, what boards track, and what employees rally around. But the headline number is less important than its components — the composition of MRR growth (new, expansion, contraction, churn) tells you whether your business is healthy or papering over problems with new logos.

The MRR breakdown formula

Sustainable MRR analysis decomposes monthly change:

Net New MRR = New MRR + Expansion MRR − Contraction MRR − Churn MRR

• New MRR — Subscription revenue from brand-new customers this month.
• Expansion MRR — Existing customers upgrading tier, adding seats, or adding products.
• Contraction MRR — Existing customers downgrading tier or removing seats.
• Churn MRR — Lost revenue from cancelled subscriptions.

A company growing 10% MoM total MRR but with 40% of growth from new logos and 60% from expansion is healthier than one growing 10% with 90% new logos and shrinking expansion — even though headline numbers match.

The related metric Net Revenue Retention (NRR) captures this: NRR = (Starting MRR + Expansion − Contraction − Churn) ÷ Starting MRR. Best-in-class B2B SaaS NRR exceeds 120%.

MRR benchmarks (2026)

ChartMogul + Optifai 2026 benchmarks:

• Median NRR (B2B SaaS) — 106% across 939 companies
• Top quartile NRR — 130%+
• MRR growth rate (Series A median) — 12% MoM
• MRR growth rate (Series B median) — 8% MoM
• MRR growth rate (Series C+ median) — 5% MoM
• "Triple, triple, double, double, double" rule — annual MRR multipliers for top-tier SaaS journey to $100M ARR

ARR (Annual Recurring Revenue) is just MRR × 12. ARR is preferred for boards and fundraising; MRR for daily ops.

How MRR connects to other metrics

MRR sits at the intersection of acquisition, retention, and monetization:

• MRR ÷ Customers = ARPU — How much each paying customer is worth per month.
• MRR × LTV multiplier (typically 1 ÷ churn rate) = LTV — Lifetime value derived from MRR.
• Churned MRR ÷ Starting MRR = Revenue Churn rate — More important than logo churn for revenue-impact analysis.
• MRR ÷ CAC payback months = monthly cash dynamics.

The cascade matters: small improvements in conversion rate, churn, or expansion compound into outsized MRR growth differences over 18–24 months.

Examples of MRR strategy

1. Salesforce's expansion model — 90%+ NRR for two decades; expansion MRR drives most growth, not new logos.
2. Zoom (2020) — Added $400M+ NEW MRR in a single quarter during pandemic; classic exogenous demand shock.
3. HubSpot's land-and-expand — Free CRM as MRR funnel; converts to paid Marketing/Sales/Service Hub MRR over time.
4. Monday.com's seat-based model — Seat expansion within accounts drives steady MRR growth; underlying logo growth slower.
5. PostKit's credit-based hybrid — Subscription tiers + usage credits; both subscription expansion and credit packs contribute to MRR.

How PostKit thinks about MRR

PostKit's MRR architecture is deliberately hybrid: subscription tiers (predictable MRR) + credit packs (variable revenue that smooths usage spikes). This dual model has implications:

• Tier MRR is the core metric — Free → Starter ($9) → Pro ($19) → Agency ($49). Upgrades drive expansion MRR.
• Credit pack revenue is reported separately to avoid distorting MRR, but factored into LTV.
• Annual plans (~17% discount) reduce involuntary churn and improve cash flow but contribute the same MRR (annual ÷ 12).
• Multi-line accounts within the Agency tier expand MRR per logo without per-line price increase — a deliberate trade for stickier accounts.

The strategic MRR question for PostKit isn't "how do we add more new MRR?" — content marketing handles that — it's "how do we maximize expansion MRR?" The roadmap features that move expansion: more platforms (Threads, Bluesky), more languages, deeper analytics, agency white-label.

For PostKit's users (brands using PostKit to grow their own businesses), the link to MRR is direct: more consistent organic content drives more leads, lower CAC, and faster MRR growth.

Frequently asked questions

MRR vs ARR — when to use which? MRR for monthly operational tracking. ARR (MRR × 12) for boards, investors, valuation. Same data, different reporting cadence.

Should I include one-time fees in MRR? No. MRR should only include recurring subscription revenue. One-time setup fees, professional services, or credit packs are reported separately.

What's "Committed MRR" (CMRR)? MRR adjusted for known future changes (signed-but-not-yet-active contracts, known churn). More accurate forward-looking number than current MRR.

How do I calculate MRR for annual contracts? Divide annual contract value by 12. A $12,000/year contract contributes $1,000 MRR.

What's a "good" MRR growth rate? Stage-dependent. Pre-Series A: 15–20% MoM is reasonable. Post-Series B: 5–10% MoM. >$10M ARR: 3–5% MoM is strong.

What's the difference between gross MRR and net MRR? Gross MRR = total billings. Net MRR = gross MRR minus refunds and discounts. Most reports use gross.

How does NRR work mathematically? NRR = (Starting MRR + Expansion − Contraction − Churn) ÷ Starting MRR. NRR >100% means existing customers contribute net positive revenue change without any new logos. NRR >120% is exceptional.

Related terms

• LTV (Lifetime Value)
• CAC (Customer Acquisition Cost)
• Churn rate
• Conversion rate
• ROAS (Return on Ad Spend)
• Attribution (marketing)

Sources

• ChartMogul — SaaS Metrics Benchmarks 2026
• Optifai — B2B SaaS Pipeline Study 2026 (939 companies)
• OpenView Partners — SaaS Benchmarks Report 2026