MRR Calculator for SaaS Teams

Quickly estimate your Monthly Recurring Revenue (MRR) and Annual Recurring Revenue (ARR) using SaaS-native formulas. Perfect for subscription founders, RevOps, and finance teams.

Formula overview: MRR = Average Revenue per Account × Number of Active Customers. ARR = MRR × 12.

Calculate your MRR & ARR

Use simple SaaS inputs to estimate your recurring revenue. This works best when you have a relatively consistent subscription price or a clear average across plans.

Count only active, paying customers for the current period.
Use a blended average if you have multiple plans.
Number of paying customers at the beginning of the period (for churn calculations).
Count only churned, paying customers who fully cancelled in the period.
Total MRR at the beginning of the period (used for revenue churn and NRR).
MRR lost from churn and downgrades in the period.
MRR gained from upgrades and cross-sells. Leave empty to treat as 0.
MRR lost from downgrades (not full churn). Leave empty to treat as 0.
Monthly Recurring Revenue (MRR)
$0
Annual Recurring Revenue (ARR)
$0
Customer Churn Rate
0%
Revenue Churn Rate
0%
Net Revenue Retention (NRR)
0%
Enter inputs and click Calculate to see results. Percentages are shown as % of starting values where applicable.
How this calculator works
MRR = ARPA × Total active customers.
ARR = MRR × 12.
Customer Churn Rate = (Customers lost during period / Customers at start of period) × 100%.
Revenue Churn Rate = (MRR lost during period / Starting MRR) × 100%.
Net Revenue Retention (NRR) = ((Starting MRR − MRR lost + Expansion MRR − Contraction MRR) / Starting MRR) × 100%.
Example: ARPA = $50, Total customers = 300 → MRR = $15,000; ARR = $180,000.
Churn and NRR example: Starting MRR = $15,000, MRR lost = $500, Expansion MRR = $1,200, Contraction MRR = $200 → Revenue Churn = (500/15000)*100 = 3.33%; NRR = ((15000 − 500 + 1200 − 200)/15000)*100 = 101.67%.
FAQ
Q: What if starting MRR or customers at start is zero?
A: Percentage-based metrics (revenue churn, customer churn, NRR) cannot be computed as rates against zero; the calculator will show "N/A" for those percentages when the denominator is zero.
Q: Should expansion/contraction be included?
A: Yes — include expansion and contraction MRR to calculate NRR. If left empty, they are treated as 0.
Q: Does this include refunds, discounts, or one-time fees?
A: No — this is a simplified view focused on recurring revenue only.

Tip: For tiered pricing, you can also run the calculation by segment (e.g., SMB vs. enterprise) and then sum the resulting MRR values.

MRR & ARR FAQs

These questions focus on how SaaS and subscription businesses typically use MRR and ARR for forecasting, reporting, and decision-making.

What is Monthly Recurring Revenue (MRR) in a SaaS business?

Monthly Recurring Revenue (MRR) is the predictable subscription revenue you expect to earn every month from active customers. It excludes one-time setup fees, implementation projects, and usage-based overages. For most SaaS products with subscriptions, MRR is calculated as Average Revenue per Account (ARPA) multiplied by the number of active paying customers.

How is ARR different from MRR?

ARR (Annual Recurring Revenue) is simply your recurring revenue normalized to a yearly view. A common shortcut is ARR = MRR × 12. This works well for monthly subscriptions. If you sell annual contracts that are billed upfront, you still represent them as 1/12th of the contract value each month in MRR to keep metrics consistent.

Does this calculator handle upgrades, downgrades, and churn?

This calculator is intentionally simplified. It takes a snapshot in time using your current ARPA and active customer count, and then estimates MRR and ARR from that. To understand net new MRR, expansion MRR, churned MRR, and net revenue retention (NRR), you would need a time-based view and cohort analysis, which is beyond the scope of this basic calculator.

How should I choose the right ARPA value?

If you have multiple plans, calculate a blended ARPA: divide your total recurring subscription revenue for the month by the number of active paying customers. This automatically bakes in the mix of plans, seat counts, and discounts. You can also run the calculator separately for each segment (e.g., self-serve vs. sales-led) for more granular insights.

Can I use this for non-SaaS subscriptions?

Yes, as long as your revenue is recurring and subscription-based (for example memberships, subscription boxes, or media subscriptions), the same logic applies. Just make sure your revenue inputs only include recurring components and that you exclude one-off purchases, transaction fees, or ad-hoc services.