The acronym ARR is overloaded in subscription finance, and the two meanings produce very different numbers. If you are reading a deck or building a model, knowing which ARR is being quoted is the difference between an honest revenue picture and a misleading one.
The two definitions, side by side
- Annual Recurring Revenue (ARR) - The annualized value of contracted recurring revenue at a point in time. Excludes one-time sales, services, setup fees, professional services. Equals MRR × 12, or sum of annual contract values.
- Annual Run Rate (run rate) - The annualized value of recent total revenue. Often the most recent month or quarter multiplied out: a $250K month implies a $3M annual run rate. Includes everything - one-time sales, services, expansion, the lot.
When they diverge - and what it means
For a clean subscription business with no services revenue, ARR and annual run rate should be within a few percent of each other. When they diverge significantly, one of three things is going on:
- Hidden non-recurring revenue. A spike in one-time fees, setup charges, or professional services inflates run rate above ARR. Common in enterprise SaaS, less common in ecommerce subscriptions.
- Mid-cycle changes. A new product launch or pricing change can pump current-month revenue without yet showing up in the contracted ARR base.
- Definition mismatch. Someone is reporting deferred revenue as ARR, or counting trial sign-ups before they convert. This is the most common cause in early-stage companies.
Which one investors actually care about
Almost always ARR. Recurring revenue is what gets a multiple at exit; run rate that includes one-time sales gets a much lower multiple. A $10M ARR business is worth meaningfully more than a $10M run-rate business with $4M of services revenue baked in. For the underlying topics, see annual recurring revenue and annual run rate.