MRR vs ARR: What's the Difference?
Understand the difference between Monthly Recurring Revenue and Annual Recurring Revenue, and when to use each metric for your SaaS business.
Key Takeaways
- MRR measures monthly recurring revenue while ARR annualises it for long-term planning.
- ARR is best suited for businesses with annual or multi-year contracts.
- Early-stage African SaaS companies often start tracking MRR before graduating to ARR.
What is MRR?
Monthly Recurring Revenue (MRR) is the predictable revenue a subscription business earns each month. It includes all recurring charges normalised to a monthly figure, excluding one-time fees. MRR is calculated by multiplying the number of paying customers by the average revenue per account. For African SaaS startups like Paystack or Flutterwave in their early days, MRR provided a clear month-over-month growth signal that helped attract investor interest and guide pricing decisions.
What is ARR?
Annual Recurring Revenue (ARR) is MRR multiplied by twelve, representing the yearly value of recurring subscription revenue. ARR is the standard metric for SaaS companies with predominantly annual contracts and is widely used in enterprise software. Investors and analysts prefer ARR when evaluating companies at scale because it smooths out monthly fluctuations. Companies like Andela and mPharma often report ARR once they reach a level of maturity that makes annual figures more meaningful.
Key differences
MRR captures short-term momentum and is ideal for spotting trends in customer acquisition, churn, and expansion revenue on a monthly basis. ARR provides a macro view suited for board reporting and valuation benchmarks. MRR reacts faster to changes, making it better for operational decisions, while ARR is preferred for fundraising and strategic planning. The choice also depends on contract length: month-to-month plans favour MRR, while annual contracts naturally align with ARR.
When to use each
Use MRR when you need granular visibility into monthly performance, especially during early growth stages or when experimenting with pricing. Switch to ARR once your business has a critical mass of annual contracts and you need a metric for investor presentations or long-range forecasting. Many African SaaS companies track both simultaneously, using MRR for internal dashboards and ARR for external reporting to global investors who benchmark against international SaaS standards.