What Is ARR (Annual Recurring Revenue)?

ARR represents the predictable, recurring portion of annual revenue — excluding one-time fees, professional services, and variable usage revenue. For a business with 100 customers each paying $1,000/month, ARR = $1.2M. ARR growth rate (year-over-year percentage change) is one of the most scrutinized metrics in SaaS fundraising — investors apply ARR multiples to determine valuations. Common benchmarks: $1M ARR milestone before Series A, $10M ARR for Series B, $30M+ for Series C. Net Revenue Retention (NRR = ending ARR from existing customers ÷ beginning ARR) measures whether a business retains and grows revenue from its existing base — NRR above 100% means expansion revenue exceeds churn, a powerful compounding dynamic.

ARR is the primary valuation driver for SaaS businesses — understanding your ARR trajectory, NRR, and growth components informs every major business decision. A financial advisor or business consultant can build ARR dashboards, model growth scenarios, and prepare the investor-grade ARR metrics expected in a fundraise.