Definition
Annual Recurring Revenue, or ARR, is the value of a company's recurring subscription revenue measured over a year. It counts only the predictable, repeating money from subscriptions, not one-time fees or unpredictable sales. If a company has 100 customers each paying 1,000 dollars a year, its ARR is 100,000 dollars. It is the single number most subscription businesses use to describe their size.
ARR matters because it captures the health of a subscription business in one figure. It shows the steady, dependable revenue the company can count on, which is what investors, boards, and leaders watch most closely. This page explains exactly what counts as ARR, how to calculate it, how it differs from MRR and from total revenue, and the mistakes that make the number lie.
What ARR actually counts
ARR is the yearly value of revenue that repeats. The key word is recurring. A yearly subscription counts. A one-time setup fee, a consulting project, or a surprise overage usually does not, because those will not reliably come back next year.
Being strict about this matters. ARR is meant to show the dependable base of a business. Mixing in one-time money inflates the number and hides the truth, so most companies are careful to count only what truly recurs.
How to calculate ARR
ARR = Monthly Recurring Revenue (MRR) × 12
The simplest path is to take your monthly recurring revenue and multiply by twelve. If your MRR is 50,000 dollars, your ARR is 600,000 dollars. You can also add up the annual value of every active subscription directly.
One thing to handle carefully is changes during the year. New customers add to ARR, cancellations subtract from it, and upgrades or downgrades move it up or down. The cleanest way to read ARR is as a snapshot of the recurring revenue you have under contract right now, annualized.
Why ARR is the number everyone watches
ARR turns a subscription business into one clear, comparable figure. It tells investors how big the company really is in dependable terms, and it lets a team track growth cleanly from quarter to quarter. Most funding conversations and valuations lean heavily on it.
It is also a planning tool. Because ARR is predictable, leaders can use it to forecast, set budgets, and measure whether growth efforts are working. When ARR is rising steadily and churn is low, the business is on solid ground.
ARR vs MRR vs total revenue
| ARR | MRR | Total revenue | |
|---|---|---|---|
| Time frame | A year | A month | Any period |
| What it includes | Recurring subscriptions only | Recurring subscriptions only | Everything, including one-time fees |
| Best for | Big-picture size and valuation | Tracking month-to-month change | Reporting all money earned |
| Relationship | MRR multiplied by twelve | ARR divided by twelve | Recurring plus one-time revenue |
Where ARR gets misleading
The most common mistake is counting money that will not recur. Adding setup fees, services, or one-off sales into ARR makes a company look bigger and steadier than it is, and that catches up with everyone eventually.
The other trap is reporting ARR without churn. A company can grow ARR while quietly losing customers, if it adds new ones faster than it loses old ones. ARR on its own looks healthy there, which is why it should always be read alongside churn and retention.
How to use ARR honestly
• Count only revenue that truly recurs, and keep one-time fees out.
• Always report ARR next to churn and retention, never alone.
• Track new, lost, and expansion ARR separately so you see what is driving change.
• Be consistent about what counts, so the number is comparable over time.
How adoption turns into ARR
For the developer-tool companies Infrasity works with, ARR is the result at the end of a chain that starts with developers discovering, adopting, and relying on a product. Content and clear onboarding sit near the front of that chain.
When developers find genuinely useful content, try a tool, and succeed with it, some of them turn into paying, recurring customers. That is how technical content quietly feeds ARR, and it is the connection Infrasity is built around.
Frequently asked questions
What is the difference between ARR and MRR?
They measure the same recurring revenue over different time frames. MRR is monthly, ARR is yearly, and ARR is usually just MRR multiplied by twelve. Teams watch MRR for month-to-month changes and ARR for the big-picture size.
Does ARR include one-time fees?
No. ARR counts only revenue that recurs, like subscriptions. One-time setup fees, services, and overages are left out, because including them would overstate the dependable base the number is meant to show.
Can ARR grow while the business is unhealthy?
Yes. A company can grow ARR while losing customers, as long as it adds new revenue faster than it loses old. That is why ARR should always be read alongside churn and retention, not on its own.
Related terms
Monthly Recurring Revenue (MRR), Churn Rate, Retention Rate, Product Adoption Metrics