MRR vs ARR

Updated 2026-08-04

Arithmetically, this is a non-question: ARR = MRR × 12. If your MRR is $6,180, your ARR is $74,160. There is no clever adjustment.

So why do both exist? Because they're used in different conversations.

MRR is the operating metric

Your costs are monthly. Your runway is measured in months. Churn happens monthly. When you're deciding whether you can afford a contractor or whether last week's pricing change worked, MRR is the number that moves visibly enough to tell you something.

At $6,180 MRR, adding a $49 customer moves the figure by 0.8% — noticeable. In ARR terms it moves $74,160 to $74,748, which reads as noise.

ARR is the reporting metric

Investors talk in ARR. Benchmarks are quoted in ARR. Annual-contract businesses genuinely bill that way, so ARR maps to how money actually arrives.

It's also, honestly, a vanity framing. "$74k ARR" sounds more substantial than "$6.2k MRR" while describing the same business. That's not dishonest — it's just worth knowing why people reach for it.

Where they genuinely diverge

For enterprise SaaS, ARR is sometimes calculated from committed annual contract value rather than from current MRR. If a customer signs a $120,000 one-year contract in March, ARR treats it as $120,000 committed, while MRR shows $10,000/month.

For anyone reading this page, that distinction almost certainly doesn't apply. If you're billing self-serve subscriptions, ARR is MRR × 12.

Which to use

Situation	Use
Deciding whether you can afford something	MRR
Watching whether a change worked	MRR
Tracking churn	MRR
Talking to investors	ARR
Comparing against public benchmarks	ARR
Announcing a milestone	ARR, if you like

One trap

Don't quote ARR to yourself as a motivational device. A founder who thinks in ARR tends to under-react to monthly churn, because a $200 MRR loss reads as "$2,400 ARR" — an annual-sounding number for a monthly-sized problem. Feel the monthly figure.

Calculating either

Both start from the same place: correctly normalised MRR. Get that right and ARR is a multiplication. Get it wrong — usually by counting annual plans at full value — and both are wrong.

How to calculate MRR properly · MRR calculator

Frequently asked

What is the difference between MRR and ARR?

Arithmetically none — ARR is MRR multiplied by twelve. The difference is contextual: MRR is the operating metric for month-to-month decisions, ARR is the reporting metric used with investors and for annual-contract businesses.

Should a solo founder track MRR or ARR?

MRR. Your decisions are monthly, your costs are monthly, and MRR moves visibly enough to tell you something. ARR mostly makes small numbers sound larger.

Is ARR just MRR times 12?

In the common definition, yes. Some enterprise businesses calculate ARR from committed annual contract value instead, which is a genuinely different number.