Committed Annual Recurring Revenue (CARR) is often mistakenly used to describe the Annual Recurring Revenue (ARR) of a SaaS business. And while these are very similar metrics, the former is calculated without reference to expected future new net bookings and focuses exclusively on existing contracts. Put differently, CARR is just a snapshot of revenues at a single point in the life of a SaaS business. Annual Recurring Revenue, on the other hand, is a forward-looking metric, and we will explain it now in a bit more detail, along with its sister metric, Monthly Recurring Revenue (MRR), which is the foundation of ARR calculation.
MRR (Monthly Recurring Revenue) and ARR (Annual Recurring Revenue) are two significant metrics used in the SaaS business model to measure the recurring revenue generated (or to be generated) by a company’s subscription-based services. While they both represent recurring revenue, they differ in terms of the time frame over which they are measured.
Monthly Recurring Revenue (MRR) represents the total revenue generated by a SaaS company from its subscriptions on a monthly basis. It takes into account the regular, recurring payments made by customers for their subscriptions within a single month. MRR provides a snapshot of the revenue generated in a specific month and is typically used for short-term analysis, tracking growth, and monitoring revenue trends on a monthly basis.
Calculating MRR involves summing up the monthly subscription fees from all active customers during a given month. It includes both new customer subscriptions and recurring payments from existing customers.
Annual Recurring Revenue (ARR) represents the total revenue generated (or to be generated) by a SaaS company from its subscriptions on an annual basis. It represents the sum of the recurring revenue from customer subscriptions for a full year. ARR provides a longer-term view of the company’s revenue and is often used for financial forecasting, budgeting, and valuation purposes.
Calculating ARR involves multiplying the MRR by 12 (also called annualization), as it represents the total revenue expected to be generated from the current subscription base over a year. ARR accounts for both the revenue from existing customers and the revenue expected from new customer acquisitions throughout the year. The expected customer acquisitions are not always easy to calculate as they rely on a set of assumptions and sources, such as sales funnel analysis, historical data analysis, market analysis, growth goals and projections, among other things. However, it is possible to model out these assumptions and estimate ARR, with MRR being the starting point of it.
As must be evident by now, the key difference between MRR and ARR lies in the time frame they cover. MRR focuses on the revenue generated within a single month, providing insights into short-term revenue performance and trends. ARR, on the other hand, represents the annualized revenue, giving a broader view of the company’s revenue and facilitating long-term planning and analysis. Lastly, ARR is not the same as CARR as has been explained earlier.
Both MRR and ARR are aboslutely essential metrics for SaaS businesses as they provide insights into the recurring revenue stream, customer retention, growth, and financial performance. They are often used together to assess revenue stability, evaluate growth strategies, and communicate the company’s financial health to stakeholders, investors, and potential acquirers.