Unit Economics
ARR (Annual Recurring Revenue)
ARR (Annual Recurring Revenue) is the predictable subscription revenue a business expects over a 12-month period, counting only recurring contracts and excluding one-time fees. It is the annualized version of MRR and the headline number SaaS founders and investors use to size a business.
Also known as: annual recurring revenue, annualized recurring revenue, ARR
Why it matters
ARR is the number that tells you whether your product is becoming a business or staying a science project. For a founder deciding build-or-kill, it strips out the noise of one-off payments, consulting gigs, and setup fees so you see only the revenue that comes back every month without you selling again. Crossing your first $1k, $10k, or $100k of ARR is concrete proof that strangers will pay you repeatedly, which is far stronger evidence than signups or likes. It also drives the decisions that matter: runway math, hiring, and whether to raise. Be honest about what counts, because padding ARR with non-recurring revenue just lies to your future self. Early on, the slope of ARR (is it climbing, flat, or leaking) matters more than the absolute figure. Investors anchor valuation to ARR and its growth rate, so a clean, defensible number is worth more than an inflated one.
Formula
ARR = MRR x 12 = sum of (recurring revenue per active subscription) x 12, counting only recurring contract value
Worked example
Say you run a B2B tool with 40 customers paying $50/month and 5 paying $200/month. Recurring MRR is (40 x $50) + (5 x $200) = $3,000, so ARR is $3,000 x 12 = $36,000. If a customer also paid a one-time $2,000 onboarding fee, you do NOT add it to ARR, because it will not recur next year. Your defensible ARR stays at $36,000.
Common mistakes
- Counting one-time revenue (setup fees, onboarding, consulting, custom work) as recurring. ARR includes only revenue that renews. Mixing in one-offs inflates the number and breaks your own runway and growth math.
- Booking annual-contract bookings as ARR before they are real recurring revenue, or counting signed letters of intent and free trials. ARR should reflect live, paying subscriptions, not pipeline or promises.
- Reporting gross ARR while ignoring churn. What good looks like is tracking net new ARR (new plus expansion minus churned and contracted), because a high gross number hides a leaking bucket.
Frequently asked questions
How do you calculate ARR (Annual Recurring Revenue)?
Take your monthly recurring revenue (MRR) from all active subscriptions and multiply by 12. Count only revenue that renews on a schedule, and exclude one-time fees like setup, onboarding, or one-off services. If you bill annually, ARR is simply the total annual contract value of your live recurring subscriptions.
What is a good ARR (Annual Recurring Revenue) for a startup?
There is no universal threshold, because growth rate matters more than the raw figure. For a solo founder, hitting your first $10k to $100k in ARR proves repeatable demand and is often enough to justify continuing. For a venture-backed company, roughly $1M ARR is a common (rough) signal of readiness for a Series A, though investors weight how fast you got there more than the milestone itself.
ARR (Annual Recurring Revenue) vs MRR: what is the difference?
They measure the same recurring revenue at different time scales. MRR is the monthly figure and ARR is that number annualized (MRR x 12). Founders use MRR to watch month-to-month momentum and ARR to talk about company size with investors. They should always reconcile: if they do not, something is being counted inconsistently.
Does ARR include one-time fees or non-recurring revenue?
No. ARR counts only revenue that recurs, such as monthly or annual subscriptions. One-time charges like implementation fees, onboarding, professional services, or custom build work are excluded because they will not repeat next year. Including them overstates the predictable revenue your business actually runs on.
What is the difference between gross ARR and net new ARR?
Gross ARR is the total recurring revenue you are running at right now. Net new ARR is the change over a period: new customer ARR plus expansion from existing customers, minus churned and downgraded ARR. Net new is the more honest health signal early on, because it shows whether you are actually growing or just refilling a leaking bucket.
How does ARR affect startup valuation?
Investors commonly value SaaS companies as a multiple of ARR, so your ARR and its growth rate directly anchor the price. A clean, defensible ARR with strong retention earns a higher multiple than a larger but messy or churning number. Padding ARR with non-recurring revenue can backfire in diligence and cost you the deal.
Related terms
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Last updated 2026-06-09 · Back to the glossary