Annual recurring revenue

Annual recurring revenue (ARR) represents the total annualised value of all active recurring subscriptions. It is calculated by multiplying monthly recurring revenue (MRR) by 12, or by summing the annualised contract values of all active customers. ARR excludes one-time fees, variable usage charges, and professional services revenue.

ARR is the language of SaaS valuation. When investors say a company is valued at "10x ARR," they mean the enterprise value is ten times the annual recurring revenue. This makes ARR the single most consequential metric for fundraising, M&A, and strategic planning.

While MRR is the better metric for month-to-month operational management, ARR provides the annualised perspective needed for long-term planning, annual budgeting, and comparing businesses of different sizes. A company with 5M ARR and a company with 50M ARR may have similar growth rates but face entirely different operational challenges.

The two common approaches to calculating ARR are the MRR-based method and the contract-based method.

The MRR-based method is the simplest and most widely used: take your current MRR and multiply by 12. This gives you a run-rate ARR that reflects your current business trajectory. It is forward-looking and updates automatically as MRR changes.

The contract-based method sums the annualised value of each individual contract. A customer on a 36,000-pound annual contract contributes 36,000 to ARR. A customer paying 500 pounds per month contributes 6,000. This method is particularly useful for businesses with a mix of monthly and annual billing because it handles each contract on its own terms.

Both methods should produce the same result if your revenue recognition is clean. Discrepancies usually arise from one-time fees being incorrectly classified as recurring, or from annual contracts being counted at their total value rather than their annualised value.

Like MRR, ARR can be decomposed into movement components:

Ending ARR = Beginning ARR + New ARR + Expansion ARR + Reactivation ARR - Contraction ARR - Churned ARR

This decomposition is essential for understanding where growth is coming from. A company growing ARR by 50% year over year through a combination of strong new sales and robust expansion is in a fundamentally different position than one achieving the same growth rate by relying solely on large new deals while existing customers churn.

An ARR metric tree decomposes the annual number into its quarterly and monthly drivers, connecting the boardroom metric to the operational levers that individual teams control. Because ARR is derived from MRR, the tree naturally mirrors the MRR decomposition but adds the annualised perspective that investors and executives care about.

The first level splits ARR into its movement components. Each component then traces down to the teams and processes that influence it. New ARR connects to sales pipeline, win rates, and average contract values. Expansion ARR connects to customer success, product adoption, and pricing design. Churned ARR connects to retention workflows, customer health scores, and product value delivery.

The metric tree reveals an important asymmetry: growing new ARR requires sales and marketing spend, while growing expansion revenue requires product investment and customer success. The best SaaS companies reach a point where expansion ARR exceeds churned ARR, meaning the existing customer base grows on its own. This is the hallmark of a durable, compounding business model.

ARR growth rate is the primary yardstick by which SaaS companies are measured. The expected growth rate depends heavily on the company's current scale, because maintaining a high percentage growth rate becomes mathematically harder as the base grows.

The "triple triple double double double" framework popularised by Neeraj Agrawal provides a useful mental model: grow from 2M to 6M ARR (3x), then to 18M (3x), then to 36M (2x), 72M (2x), and 144M (2x). Companies that achieve this trajectory in five years are considered elite performers.

Beyond growth rate, the composition of ARR growth matters. Investors increasingly examine net new ARR efficiency (the ratio of net new ARR to sales and marketing spend) as a measure of how efficiently a company converts investment into recurring revenue. A ratio above 1.0 is considered efficient; above 1.5 is exceptional.

1. 1

   Including non-recurring revenue

   Setup fees, consulting revenue, and one-time charges must be excluded from ARR. Including them inflates the metric and creates misleading growth trends.

2. 2

   Counting committed but not yet live contracts

   A signed contract that has not yet started generating revenue should not be counted in ARR until the subscription is active. Counting committed ARR inflates the current run rate.

3. 3

   Not decomposing ARR movements

   Tracking only the headline ARR number without breaking it into new, expansion, contraction, and churned components makes it impossible to diagnose growth dynamics or predict future performance.

4. 4

   Confusing ARR with annual revenue

   ARR is an annualised run rate based on current subscriptions. It is not the same as the total revenue recognised in a 12-month accounting period, which includes non-recurring items and reflects the timing of contract starts and ends throughout the year.