Short answer: ARR (Annual Recurring Revenue) projects your subscription revenue over a year. MRR (Monthly Recurring Revenue) shows your monthly subscription income. Use ARR for long-term planning and investor reports. Use MRR for short-term growth tracking and churn analysis.
Key takeaways
- ARR is MRR multiplied by 12, assuming stable subscriptions.
- MRR is more sensitive to monthly changes like upgrades and downgrades.
- Use MRR for weekly and monthly operational decisions.
- ARR is better for annual budgeting and investor communication.
- Track both to see both momentum and long-term health.
- Never convert MRR to ARR without adjusting for seasonality and churn.
What you will find here
If you run a subscription business, you see ARR and MRR everywhere. These two metrics measure the same thing—recurring revenue—but at different speeds. ARR gives you the long-term view. MRR gives you the monthly pulse. Both matter, but choosing the wrong one at the wrong time can lead to bad decisions.
What Is the Key Difference Between ARR and MRR?
ARR stands for Annual Recurring Revenue. It’s the total recurring revenue you expect from your subscribers over a year. MRR stands for Monthly Recurring Revenue. It’s the same concept but measured monthly. The formula is simple: ARR = MRR × 12.
But the difference goes beyond math. ARR smooths out monthly ups and downs. It’s a big-picture number for investors and long-term planning. MRR catches short-term trends like a sudden spike in churn or a successful upgrade campaign. If you only look at ARR, you might miss a problem that started last month.
When Should You Focus on ARR?
ARR is for the boardroom. It’s the metric you use when you need to show investors your annual growth rate or compare your business to industry benchmarks. ARR is also useful for setting annual targets and budgeting. Because it averages out monthly noise, it gives a stable view of your revenue trajectory.
For example, if your MRR fluctuates between $10,000 and $12,000, your ARR tells investors you’re roughly in the $120,000 to $144,000 range. That’s a more digestible number for fundraising conversations. Most SaaS investors think in annual terms, so ARR is their default metric.
When Should You Focus on MRR?
MRR is for the operations team. If you’re running a growth experiment, rolling out a pricing change, or watching churn rates, MRR should be your go-to. It responds quickly to changes, so you see the impact of your actions within weeks, not months.
MRR also helps you monitor different types of revenue movements. You can break it down into new MRR, expansion MRR, and churned MRR. This decomposition is much harder to do with ARR because the annual view masks when those changes happened. For day-to-day management, MRR is more actionable.
ARR vs MRR: Comparison Table
| Aspect | ARR | MRR |
|---|---|---|
| Time frame | Annual | Monthly |
| Best for | Long-term planning, investor reports | Short-term tracking, team dashboards |
| Sensitivity to change | Low (smoothed over 12 months) | High (catches monthly fluctuations) |
| Common use | Annual budgets, valuation | Growth experiments, churn analysis |
| Risk | Hides monthly churn | Can be noisy |
How to Convert MRR to ARR Without Overstating
The basic conversion is simple: multiply MRR by 12. But that assumes your MRR is stable. If you’re growing fast, multiplying this month’s MRR by 12 overstates your ARR because next month will be higher. If you’re shrinking, it understates it.
To get a more accurate ARR, average your MRR over the last 3 to 6 months. Then multiply by 12. This smooths out growth and contraction. Another approach: use the ARR formula from your accounting method. For annual contracts, ARR is simply the annualized value of those contracts. For monthly contracts, it’s trickier.
For a deeper dive into correct calculations, see my guide on How to Calculate ARR the Right Way. Also check out How to Calculate ARR the Right Way for more examples.
Common Mistakes When Tracking ARR and MRR
Using ARR for Monthly Decisions
Don’t set monthly growth targets based on ARR targets. ARR changes slowly. If you want to see if a new pricing tier is working, watch MRR within the first month.
Ignoring Contractions and Downgrades
Both ARR and MRR should account for downgrades and cancellations. Gross MRR shows only new and expansion revenue. Net MRR includes churn and contraction. Always track net MRR.
Treating MRR as ARR Divided by 12
This works only if your MRR is constant. If you have seasonality or growth, your effective ARR and your MRR×12 won’t match. Use the trailing average method instead.
Which Metric Should You Report to Your Team?
Report both, but with different audiences. The executive team and board should see ARR. The product and marketing teams should see MRR. If you show MRR to the board, also show the monthly growth rate and explain the trend.
One practical tip: in your weekly stand-up, talk about MRR. In your quarterly board meeting, talk about ARR. This keeps everyone aligned without confusing short-term signals with long-term trends.
Bottom Line: You Need Both
ARR and MRR are not either/or. They’re complementary. ARR gives you the forest; MRR gives you the trees. If you only track ARR, you’ll miss the monthly changes that predict your annual outcome. If you only track MRR, you’ll lose sight of whether you’re building a sustainable business. Track both, use each for its intended purpose, and you’ll make better decisions.
Frequently asked questions
Is ARR just MRR multiplied by 12?
Yes, in its simplest form, ARR equals MRR times 12. However, this assumes your MRR is stable. If your revenue is growing or shrinking, using a single month’s MRR can misstate your annual run rate. A better approach is to average MRR over several months before multiplying.
Can I use ARR for a company that only has monthly subscriptions?
Yes, you can. Even if all your customers pay monthly, you can still report ARR by annualizing your current MRR. Just be aware that ARR will be less predictable for monthly subscribers because they can cancel at any time. Many investors expect ARR regardless of billing frequency.
Which metric do investors prefer: ARR or MRR?
Investors typically prefer ARR because it aligns with annual revenue comparisons and valuation multiples. However, they also want to see MRR growth rates to understand momentum. In practice, investors look at both but often frame their questions around ARR for funding rounds and benchmarking.
How often should I recalculate ARR?
You should recalculate ARR at least monthly, especially if you report MRR monthly. Some companies update ARR weekly to capture fast changes. The frequency depends on your growth rate and how often you make decisions based on annual projections. Monthly is standard for most SaaS companies.
Does ARR include one-time fees?
No, ARR should only include recurring subscription revenue. One-time fees like setup costs, professional services, or hardware sales should be excluded. Including them inflates your ARR and misleads investors and management. Always strip out non-recurring revenue before calculating either ARR or MRR.
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