What is MRR?
Monthly Recurring Revenue. ARR's little sibling — the monthly version. Easier to spot short-term trends.
MRR stands for Monthly Recurring Revenue. It is how much money your business brings in each month from subscriptions — revenue that arrives regularly rather than from one-off purchases. You can think of MRR as ARR's little sibling: the same idea, but measured per month instead of per year.
Think of MRR as the pulse of your subscription business. Because you measure every month, you quickly see if something is changing — are you gaining customers, losing some, raising or lowering prices? The annual figure (ARR) is good for describing size, but MRR is better for catching short-term trends before they become big problems or big opportunities.
Like ARR, MRR counts only what recurs. A one-off purchase is not included. It is the regular, predictable revenue that is the whole point.
Why is MRR important for your business?
MRR gives you an early warning light and an early accelerator. Because you track it month by month, you notice straight away if growth stalls or if something starts to take off. That lets you act while the change is still small.
It is also a figure that makes it easy to set concrete, short-term goals: "we want to increase our MRR by this much this month". That makes it simpler to motivate the team and see whether efforts actually deliver results.
MRR in practice
Say you have a digital service with 30 customers paying £80 a month. Your MRR is then £2,400. Next month you win five new customers but lose two — you see immediately how MRR moves and can link it to what you did.
For a small business, this is invaluable. Instead of waiting for the annual accounts to understand how things are going, you get a fresh temperature reading every month. If MRR falls two months in a row, you know it is time to look at why customers are leaving — long before it shows in the big annual figure.
Common questions about MRR
What does MRR mean?
MRR means Monthly Recurring Revenue. It is how much money your business brings in each month from subscriptions — revenue that recurs regularly.
What is the difference between MRR and ARR?
MRR is measured per month and ARR per year. They describe the same thing — recurring revenue — but MRR is better for spotting short-term trends while ARR describes total annual size.
How do you calculate MRR?
You add up all your recurring monthly revenue. If you have 30 customers paying £80 a month, your MRR is £2,400. One-off revenue does not count.
Related terms
ARR
Annual Recurring Revenue. How much recurring money your SaaS brings in per year. Investors love this number.
CAC
Customer Acquisition Cost — what you spend to win one new customer. LTV should be at least 3× CAC. Otherwise you are buying growth at a loss.
Churn
The rate at which customers leave. High churn means holes in the bucket — plug the leaks before pouring in more customers.
CRM
Customer Relationship Management — a system for tracking customers without drowning in spreadsheets. Your business memory, but better organised.
Freemium
Free basic tier plus paid premium. Works when the free version is valuable enough to use — but not enough to stop people upgrading.
LTV
Lifetime Value. How much an average customer is worth over time. Compare with CAC — otherwise you are losing money.