ARR vs. MRR: Understanding Recurring Revenue Models

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Monthly Recurring Revenue (MRR) and Annual Recurring Revenue (ARR) are important subscription metrics that reflect predictable revenue across different periods. MRR tracks monthly momentum, taking into consideration current churn and expansion, whereas ARR provides a 12-month, high-level picture of growth for strategy and investor valuation.

ARR and MRR are significant metrics used in the subscription business model to track revenue. For example, ARR gives insight into the health and consistency of a company’s recurring revenue stream. It enables firms to manage their finances, make informed resource allocation decisions, and set realistic growth goals.

Meanwhile, examining changes in MRR allows you to understand which plans or packages are generating the most money and adapt them accordingly. Both are essential for measuring your company’s financial performance.

Here’s everything you need to know about ARR and MRR, from their definitions to the KPIs you should track.

What is Annual Recurring Revenue?

Annual Recurring Revenue (ARR) is a metric used by subscription-based businesses to measure the total revenue expected to be generated from recurring subscriptions, usually over a 12-month period. It provides a forward-looking view of your company’s expected revenue based on the subscriptions at a given time.

Monitoring ARR and its trends over time can provide insights into your business’ growth trajectory and financial performance. It is often used together with other metrics, such as customer acquisition cost (CAC), customer lifetime value (CLTV), and churn rate, to assess the overall health and success of your business.

ARR Formula

ARR is calculated by summing up the total value of all annual subscription contracts in effect without taking into account the start or end date of the subscription. It should also exclude one-time or non-recurring fees.

ARR = Annual recurring revenue from existing customers + Annual recurring revenue from new customers

Compared to MRR, ARR provides a longer-term view of your company’s revenue. You can use it for reporting, forecasting, valuation, and investor communication. It looks at the expected revenue generated over an entire year.

ARR evaluates the growth and scalability of your business. It helps owners understand their subscription business model’s long-term revenue potential and stability.

What is Monthly Recurring Revenue?

Monthly Recurring Revenue (MRR) is used to measure the total revenue generated from recurring monthly subscriptions within a given month. It’s a dynamic metric that can change based on many factors, such as new sign-ups, subscription cancellations, upgrades, and downgrades.

You can use MRR for financial reporting, forecasting, benchmarking, and evaluating the effectiveness of your marketing and sales efforts. It can even be used to optimize pricing and packaging strategies, maximizing profits.

MRR Formula

MRR is calculated by summing up the monthly subscription revenue from all active customers during a particular month. It excludes one-time or non-recurring fees.

MRR = Monthly recurring revenue from existing customers (or those who subscribed in the previous month) + Monthly recurring revenue from new customers

MRR provides insights into the health of your subscription business, as it reflects the recurring revenue that the company can expect to receive. It is a great indicator of your company’s financial performance, growth, and stability.

What are the Key Differences Between ARR and MRR?

There are many differences between ARR and MRR. Below are the important ones:

Timeframe

ARR measures revenue annually, while MRR measures revenue every month. ARR looks at the total revenue a subscription business expects to generate in a year, whereas MRR looks at the total revenue generated in a month.

Calculation

ARR is calculated by taking the sum of all subscription contracts for a year and excluding any one-time or non-recurring fees. Meanwhile, MRR is calculated by taking the sum of all subscription contracts for a month and excluding any one-time or non-recurring fees.

Granularity

ARR provides a higher-level view of your business’ financials, aggregating revenue from all subscriptions over a year. MRR is only calculated monthly, so it provides a more granular view of your company’s revenue.

Flexibility

MRR is more flexible and responsive to changes in the subscription business, as it reflects monthly fluctuations in revenue. Since ARR is calculated annually, it captures revenue changes slower than MRR and may not be as responsive to changes in your business.

Comparability

ARR is commonly used for annual financial reporting, forecasting, and valuation purposes, as it provides a stable and predictable measure of your company’s revenue. MRR, on the other hand, is used for operational and day-to-day management purposes. It provides a more dynamic and real-time measure of your profits.

What are the Various ARR and MRR Metric Types?

ARR and MRR are widely used in software-as-a-service (SaaS) companies to assess subscription revenue and financial health. Below are ARR and MRR SaaS metrics you should be aware of:

Gross ARR/MRR

Gross ARR/MRR refers to the total annual or monthly recurring revenue generated from all active customers without considering any discounts, refunds, or cancellations. It represents the revenue a SaaS business expects to generate from recurring subscriptions before any adjustments.

Net ARR/MRR

Net ARR/MRR accounts for adjustments such as discounts, refunds, or cancellations. It represents the revenue that a SaaS business expects to recognize after accounting for these factors. It also provides a more accurate picture of the actual revenue that your business will realize, accounting for changes in customer subscriptions.

Expansion ARR/MRR

Expansion ARR/MRR measures the additional revenue generated from existing customers due to upsells, cross-sells, and upgrades. It reflects the growth in revenue from existing customers, indicating the success of your business in expanding its customer base and increasing customer value over time.

New ARR/MRR

New ARR/MRR represents the revenue generated from new customers who have recently subscribed to your SaaS product or service. It reflects the acquisition of new customers and the ability of your business to attract and convert new customers into paying subscribers.

Churn ARR/MRR

Churn ARR/MRR measures lost revenue caused by customer cancellations. Here, you will be looking at customer retention and loyalty.

Net Revenue Retention (NRR)

NRR is a comprehensive metric that combines ARR/MRR and churns ARR/MRR to provide a holistic view of revenue growth from existing customers. It measures the net change in recurring revenue from existing customers, accounting for both upsells and churn. NRR is often used as a key indicator of a SaaS business’s overall revenue growth and customer retention.

Tools and Templates for Tracking MRR & ARR

You don’t need a CFO to track MRR and ARR, but you do need structure. Because without it, your revenue numbers will live in scattered Stripe exports, messy spreadsheets, or overly optimistic Notion dashboards that no one checks. Here’s how to actually track MRR and ARR, depending on the stage you’re in:

Step 1: Choose the right method for your stage

For early-stage or solo founders: Start with Google Sheets or Airtable. You’ll get full visibility, full control, and zero cost.

Track:

Customer name
Plan type (monthly/annual)
Amount paid
Start/cancel date
Status (active, churned, paused)

Add columns to track upgrades/downgrades monthly to measure expansion or contraction revenue.

For funded or growing SaaS businesses:

Use a dedicated revenue tracking tool. These integrate directly with Stripe, Braintree, or your billing system to auto-calculate key metrics.

Top tools:

Baremetrics – Great UI, smart segmentation, and churn insights
ChartMogul – Excellent for ARR/MRR, cohort analysis, and long-term forecasting
ProfitWell – Strong free tier, churn analysis, benchmarking
Stripe Analytics – Built-in revenue reporting (limited but helpful)
GoSquared – Lightweight for smaller SaaS products

These tools help you:

Monitor churn, upgrades, downgrades
Predict runway
Build reports for investors or advisors
Set MRR/ARR-based KPIs

Step 2: Review and refine regularly

Schedule a monthly “metrics review” even if it’s just you
Compare MRR vs ARR changes over time
Watch for red flags: flat MRR + rising churn = trouble
Keep one living dashboard, not five scattered reports

Smart founders don’t wait until due diligence to get their numbers right. Start now, track simply, and build habits that help your business speak for itself.

MRR and ARR are mirrors. They show you what’s working, what’s changing, what’s fragile, and what’s worth doubling down on. They force you to see your business not just as an idea but as an engine that runs on patterns, behaviors, and choices.

And the truth most early founders miss: Revenue doesn’t become meaningful just because it grows. It becomes meaningful when you know how to read it. When you know what’s real, what’s recurring, and what’s quietly slipping through the cracks.

So, track your MRR to stay grounded. Use ARR to plan for what’s possible. And build a system that doesn’t just celebrate growth, but knows how to sustain it.

Summary

In summary, ARR and MRR are critical indicators for measuring subscription income. They differ in terms of timeframe, calculation, adaptability, and comparison. ARR provides an annual picture of revenue, whereas MRR provides a monthly view of it. Each has advantages and disadvantages that vary according to the use case or business scenario.

Monitoring and analyzing these indicators can help your SaaS firm make informed decisions and achieve long-term success. To begin, use them to optimize price and packaging tactics!