ARR vs Revenue: What's the Difference and Why It Matters

ARR and revenue sound similar but measure different things. Annual recurring revenue (ARR) is a forward-looking snapshot of the subscription revenue a company expects over the next twelve months. Revenue, in accounting terms, is what a company actually earned in a past period. Many startups also quote "run-rate" or "annualised" revenue, which is different again. Mixing them up leads to bad comparisons, especially in fast-growing AI and software companies.

Quick definitions

• Revenue (recognised revenue): income earned in a period and recorded under accounting rules, such as US GAAP or IFRS. It's backward-looking and audited in public companies.
• ARR (annual recurring revenue): the annual value of recurring subscription contracts in force at a point in time. It excludes one-off fees and is not an accounting measure.
• MRR (monthly recurring revenue): the monthly version; ARR is often MRR times twelve.
• Run-rate or annualised revenue: recent revenue, usually from the latest month or quarter, multiplied to a full year. It can include non-recurring and usage-based revenue.

A simple example

Imagine a software company that starts the year with 1,000 customers paying US$1,000 a month and adds 100 new customers each month at the same price.

• In January, MRR is US$1.0 million, so ARR is US$12 million.
• By December, it has 2,100 customers, so MRR is US$2.1 million and ARR is US$25.2 million.
• Recognised revenue for the year is the sum of each month's revenue, about US$19.2 million.

So at year-end, the company can truthfully say it has US$25.2 million ARR, while its revenue for the year was only US$19.2 million. For a fast-growing company, ARR will always be well above trailing revenue. That's normal, but it means the two numbers shouldn't be compared directly.

Why startups prefer ARR

For subscription businesses, ARR is a better guide to current momentum than last year's revenue. It shows the size of the business right now and is easy to track month by month. Investors in software companies use ARR heavily: valuations are often expressed as a multiple of ARR, and milestones such as US$100 million ARR (sometimes called "centaur" status) are widely cited. Our guide to SaaS valuation multiples explains how ARR feeds into valuations.

Where run-rate revenue misleads

Many AI companies quote "annualised revenue" or "run-rate revenue" rather than strict ARR. This often includes usage-based charges, where customers pay for what they consume, rather than fixed subscriptions. That can be perfectly legitimate, but it has pitfalls:

• A strong month inflates the figure. Multiplying an unusually high month by twelve overstates the year.
• Usage can fall. Customers on consumption pricing can cut usage quickly.
• Monthly subscriptions can churn. Consumer AI apps often have customers who cancel after a few months.
• One-off revenue may be included. Implementation fees or one-time deals can creep into "annualised" numbers.

When Vercel reports "run-rate GAAP revenue", or Lovable reports "annualised run-rate revenue", or Perplexity's annualised revenue is reported by the press, each figure is a snapshot of recent momentum, not twelve months of earned revenue.

Revenue that isn't recurring

Some companies have substantial revenue that isn't recurring at all: hardware sales, transaction fees, professional services, or interest income. For a payments company like Stripe or a marketplace like Vinted, ARR isn't the right measure; total revenue, net revenue or gross merchandise value tell the story better. For a defense company like Anduril, annual revenue from contracts is the relevant figure. Always use the measure that fits the business model.

Gross versus net revenue

Another common source of confusion is gross versus net revenue. A payment company may record the full value of fees it charges merchants (gross) or only what remains after paying card networks and banks (net). Mollie, for example, reports net revenue. Comparing one company's gross revenue with another's net revenue makes the first look far larger. Check which measure is used before comparing.

How to compare companies fairly

1. Use the same measure for all companies: ARR with ARR, recognised revenue with recognised revenue.
2. Check the date. An ARR figure from six months ago may be far below today's in a fast-growing company.
3. Ask how it's defined. Does it include usage, one-off fees or monthly plans?
4. Look at retention. High net revenue retention makes ARR more reliable.
5. Look at profitability too. The Rule of 40 combines growth and margin.

ARR in our company profiles

On CapFinch profiles, we label each revenue figure with its type: ARR, run-rate, recognised annual revenue, net revenue, gross merchandise value, or company-reported versus press-reported. When a company hasn't disclosed a figure, we say so rather than repeat third-party estimates. That's why some profiles show ARR (for example Vanta and ElevenLabs), others annual revenue (Zopa, CloudWalk), and others nothing.

Common mistakes

• Calling run-rate revenue "ARR" when much of it is usage-based or non-recurring.
• Comparing one company's ARR with another's trailing revenue.
• Using an old ARR figure to calculate a current valuation multiple.
• Including signed but not-yet-live contracts in ARR (sometimes called "contracted ARR").
• Ignoring churn when extrapolating monthly revenue.

How investors check ARR

Because ARR isn't an accounting measure, investors doing due diligence test it carefully. They typically ask for a list of every customer contract with start dates, end dates, prices and any discounts, then rebuild the ARR figure themselves. They check whether contracts included in ARR are actually live and paying, whether free trials or pilots have been counted, and whether multi-year deals with rising prices have been annualised correctly. They also reconcile ARR with recognised revenue and with cash collected, because large gaps between the three can signal problems. Our startup due diligence checklist covers this and other checks.

Good practice is to publish a clear definition of ARR internally and stick to it. Companies preparing for an IPO usually tighten their definitions well in advance, because public company disclosures face much more scrutiny than private fundraising decks.

ARR, bookings and billings

Three more terms often appear alongside ARR. Bookings are the value of new contracts signed in a period, including multi-year commitments; a company can book a three-year, US$3 million contract that adds only US$1 million of ARR. Billings are the amounts invoiced to customers in a period, which depend on whether customers pay monthly, annually or upfront. Remaining performance obligations (RPO), reported by public companies, measure contracted revenue not yet recognised. Each answers a different question: ARR shows current run rate, bookings show sales momentum, billings show cash timing and RPO shows the contracted backlog.

Usage-based pricing and ARR

More software companies now charge based on usage, such as the number of API calls, AI tokens, transactions or data processed, rather than fixed subscriptions. That makes ARR harder to define. Some companies use the last month's or quarter's usage revenue annualised; others use committed minimum spend in contracts. Neither is perfect. Usage revenue can rise quickly when customers grow and fall quickly when they optimise. When comparing companies with usage pricing, such as cloud and AI infrastructure providers, look at net revenue retention and the share of revenue under committed contracts.

A checklist for reading revenue claims

1. Is the figure ARR, run rate, bookings or recognised revenue?
2. What date does it refer to?
3. Does it include usage-based, one-off or contracted-but-not-live revenue?
4. Is it gross or net of costs passed through to partners?
5. Who reported it: the company, an investor, or an anonymous source?

Answering these five questions avoids most of the errors people make when comparing private companies.

For consistency, CapFinch profiles label exactly which measure each revenue figure uses, so you can compare like with like across companies.

Why it matters for valuations

Valuation multiples depend on the revenue figure used. A company valued at US$5 billion with US$250 million ARR trades at 20 times ARR; if its trailing recognised revenue is only US$170 million, the trailing multiple is about 29 times. Neither is wrong, but mixing them leads to misleading comparisons. Our guide to SaaS valuation multiples explains how investors use each.

ARR for non-software businesses

The term ARR is sometimes borrowed by businesses that aren't pure software companies, such as subscription boxes, insurance or managed services. The same principles apply: ARR should only include revenue that genuinely recurs under ongoing agreements. When a company with large one-off sales quotes ARR, check what share of its total revenue is actually recurring.