MRR vs ARR: Which Recurring Revenue Metric to Track

Should you track MRR or ARR?

Track the metric that matches how you sell: monthly recurring revenue if you bill month to month, annual recurring revenue if your customers commit for a year. Most SaaS companies watch both, because they are the same underlying number read on two clocks. The real question is not which one is correct. It is which cadence lets you catch a change while you can still act on it.

MRR and ARR both measure recurring revenue, the predictable subscription income that arrives whether or not you close another deal. Neither should include one-time setup fees or professional services that will not repeat. Where they split is the window. MRR frames one month. ARR frames a year. That single difference decides which number belongs on your operating dashboard and which belongs on your board deck.

What is MRR?

MRR, or monthly recurring revenue, is the predictable subscription revenue your customers pay in a single month. You calculate it by summing every active subscription's monthly fee, converting annual plans to a monthly figure by dividing by twelve. A customer on a $600 annual plan contributes $50 of MRR.

The reason operators love MRR is that it moves in near real time. When a customer upgrades or cancels, you see it in the current month rather than at renewal. Broken into its parts, new MRR, expansion MRR, contraction MRR, and churned MRR, it tells you where this month's growth came from and what it cost you. That granularity is why product and RevOps teams run on it.

What is ARR?

ARR, or annual recurring revenue, is the predictable subscription revenue your customers are committed to across a full year. For a company selling annual contracts, ARR is the cleanest read on the business, because it reflects what customers have actually signed for rather than a single month's snapshot.

ARR speaks the language of the board and the investor. Valuations and growth multiples reference it, and annual plans are written in it. It also smooths the noise that makes MRR twitchy: a customer who prepays a year does not create a spike in one month and a cliff the next. For enterprise SaaS, where deals are large and annual, ARR is the number that reflects reality.

How do MRR and ARR actually differ?

The difference is the time window, and for a pure subscription business ARR is simply MRR multiplied by twelve. They draw from the same recurring base. One reports it monthly, the other annually. Companies with annual contracts often run it the other way, measuring ARR directly from signed contract value and deriving MRR as ARR divided by twelve. Where each metric earns its keep is what changes. One caution the multiplication hides: MRR times twelve only holds when the month you are annualizing is representative. Annualize a month padded by a one-time deal or a seasonal surge and your ARR inherits the distortion. ARR should count committed recurring dollars, not a strong month scaled up.

When should you lead with MRR?

Lead with MRR when your business moves monthly and small changes carry weight. If you bill month to month or sit early enough that a handful of upgrades and cancellations swing the trend, MRR is where those movements show up first. It gives you a monthly pulse on expansion and churn, and it lets you react to a contraction trend in weeks instead of at renewal season.

MRR is also the honest metric for a young company. Annualizing a volatile early-stage month into ARR can dress up a $40,000 business as a half-million-dollar one on the strength of a single strong period. I would rather watch MRR and keep the story grounded in what actually recurs.

When should you lead with ARR?

Lead with ARR when you sell annual contracts and plan on an annual horizon. Enterprise deals are signed for a year or more, so the annual figure maps directly to what customers committed to. Board reporting and long-range planning both run in ARR, and comparing it against churn and expansion over the year tells you whether the base is compounding or eroding.

ARR is the better lens for a mature, contract-driven business precisely because it ignores monthly noise. When one customer prepays and another churns mid-quarter, the annual view holds steady while MRR whipsaws. For long sales cycles, that stability is the point.

How do MRR and ARR connect to your forecast?

Recurring revenue is the most predictable input a forecast has, which makes both metrics the base every projection is built on. New-business bookings are a guess until they close. Your existing recurring base, net of the churn and expansion you can already see moving, is close to known. Start a sales forecast from recurring revenue and layer new business on top, and you separate the part of next quarter you can bank from the part you still have to win. The cadence you pick shapes the forecast. MRR feeds a monthly model that catches a downturn early enough to matter, which is what drives forecast accuracy over a full year. ARR anchors the annual plan the board signs off on. If you are building the model itself, our guide to creating a sales forecast walks through where recurring revenue sits in the stack. At ORM we build the forecast models that turn that recurring base into a forward view, so the movement in MRR and ARR shows up as a projection you can steer, not a report you read after the quarter closed.