Recurring Revenue: ARR & MRR

A one-off sale earns you money once. A subscription earns you money again and again, as long as the customer keeps paying. To describe that steady, repeating income, subscription companies use two closely related numbers: MRR and ARR. If you’ve ever wondered why software firms seem obsessed with monthly figures, this is why — their revenue arrives in a predictable drip, and these two metrics measure the size of that drip.

MRR and ARR, defined

MRR stands for Monthly Recurring Revenue — the total predictable revenue you collect each month from all active subscriptions. ARR stands for Annual Recurring Revenue — the same idea stretched over a year. The link between them is the simplest math in this whole course:

ARR = MRR × 12, and MRR = ARR ÷ 12.

So if a single customer pays $50 per month, that customer is worth $50 × 12 = $600 of ARR. If you have 1,000 customers each paying $50/month, your MRR is $50,000 and your ARR is $50,000 × 12 = $600,000. One word of caution: “recurring” means repeating subscription revenue only. A one-time setup fee or a single consulting project is not recurring, so it doesn’t belong in MRR or ARR even though it’s real money.

Why these numbers are loved

Recurring revenue is prized because it’s predictable. If you start January with $50,000 of MRR and nobody cancels, you can reasonably expect $50,000 again in February without selling a thing. That stability lets a company hire, plan, and invest with confidence — it’s the difference between a salary and a series of unpredictable freelance gigs. It’s also why investors often value a dollar of recurring revenue more highly than a dollar of one-time revenue: the recurring dollar is likely to come back next month. A business that earns the same total revenue from one-time projects has to win all of that work again from scratch every single year, which is a far riskier way to live. Recurring revenue, by contrast, starts each year with a head start.

The catch: renewals

Here’s the part that surprises people. ARR and MRR are not money in the bank — they’re a run rate, an estimate of what you’ll earn if customers keep paying. The moment a customer cancels, their slice of MRR vanishes. This is why renewals matter so much: a renewal is a customer choosing to continue (and pay again) when their subscription period ends. Every renewal defends existing MRR; every non-renewal quietly shrinks it. A company can sign plenty of shiny new deals and still watch its ARR fall if too many existing customers fail to renew. That’s why “renewal rate” sits right next to ARR on most subscription dashboards. Picture a company with $600,000 of ARR that signs $100,000 of new business in a year but loses $120,000 to customers who don’t renew. Despite all the new deals, its ARR actually fell by $20,000. The new logos were real, but the leak was bigger. This is the trap teams fall into when they celebrate signings and ignore the back door.

Rule of thumb: new sales grow recurring revenue; renewals keep it. Lose sight of renewals and your ARR leaks out the back door.

Spot the revenue type

Read each example and decide whether it’s MRR, ARR, or neither recurring — then tap a card to flip it and check your answer.

Sort the money flows

Drag each statement into whether it affects MRR, is a one-time revenue, or relates to renewals — or tap an item, then tap a bucket. Hit Check placement when you’re done.

How to use it

You’ll meet these terms in almost any subscription business, so a few habits help. When you see a big ARR figure, remember it’s annual and roughly twelve times the monthly number — divide by 12 to sanity-check the MRR. When you hear about a “great sales quarter,” it’s fair to ask the quieter question: “How did renewals go?” — because growth that’s offset by cancellations isn’t really growth. And keep the recurring-versus-one-time line straight: a one-off implementation fee is nice, but it won’t show up next year. Useful phrases: “That deal adds $600 of ARR,” “What’s our MRR heading into next quarter?” and “New logos look strong, but did we protect our renewals?” Speaking this way shows you understand that in a subscription business, keeping customers is every bit as valuable as winning them.