Annual Recurring Revenue (ARR) is the annualized value of a company's recurring subscription or contract revenue. It is calculated by multiplying Monthly Recurring Revenue (MRR) by 12, or by summing the annual contract values of all active customers. ARR is the primary revenue metric for SaaS and subscription businesses because it reflects predictable, recurring income rather than one-time transactions.

Investors use ARR as a baseline for assessing growth, calculating valuation multiples, and evaluating the health of a business. The most common early-stage valuation framework for SaaS companies applies an ARR multiple — typically 5x–15x ARR at seed to Series A depending on growth rate, retention, and market category. High-growth companies (doubling ARR year-over-year) often command multiples at the high end; slower growers compress toward the low end.

Stage benchmarks matter when presenting ARR in a pitch deck. At seed, most investors look for some ARR — even $50K–$200K — as evidence that someone is willing to pay for the product. At Series A, the typical benchmark is $1M–$3M ARR with consistent month-over-month growth. At Series B, investors expect $5M–$15M ARR with evidence of efficient go-to-market and improving unit economics.

Net Revenue Retention (NRR) is the most important companion metric to ARR. NRR measures what percentage of ARR from existing customers was retained and expanded over a 12-month period, accounting for churn, downgrades, and upsells. An NRR above 100% means the company is growing revenue from its existing customer base alone — a powerful signal. Best-in-class SaaS companies target 120%+ NRR.

ARR should not be confused with revenue recognized under accounting standards. ARR represents the contracted, recurring portion of revenue only — excluding one-time implementation fees, professional services, usage-based overages, or non-recurring charges. Mixing these into ARR overstates the business's recurring revenue base and misleads investors about retention.

When presenting ARR in a pitch deck, show the growth curve over time, not just the current number. Month-over-month ARR growth, the ARR waterfall (new, expansion, churn), and NRR together tell a complete story about the business's health.