NexaCalc

Business SaaS Calculator

MRR Calculator

Calculate monthly recurring revenue from subscription plan rows or direct MRR inputs, then reconcile New, Expansion, Reactivation, Contraction and Churn MRR.

Last reviewed: June 29, 2026Business Phase 4

SaaS metrics calculator

MRR Calculator

Changing currency changes display only. It does not convert values or connect to billing platforms.

Mode

MRR context
MRR movement
MRR conventions

Subscription plan rows

Enter your values and choose Calculate to show the result.

Formula and metric conventions

Primary formula

Plan MRR = active paid subscriptions x discounted recurring cycle value / billing cycle months. Net New MRR = New + Expansion + Reactivation - Contraction - Churn.

Included values

Recurring subscription charges. Recurring seat or quantity charges. Recurring add-ons. Committed recurring usage. Recurring discounts as reductions.

Excluded values

Setup and onboarding fees. Taxes and pass-through charges. Refundable deposits. One-time purchases. Uncommitted usage by default. Free and trial subscriptions by default.

SaaS metric flow

Normalize

Convert billing cycles to monthly or annual recurring value.

Classify

Apply visible eligibility conventions for discounts, usage and statuses.

Reconcile

Check movements, churn, retention, CAC and LTV relationships.

Report

Show result cards, tables, visual bars, warnings and CSV export.

What MRR Calculator measures

MRR Calculator focuses on normalized monthly recurring subscription value. It uses monthly normalization and visible convention controls so the result does not silently mix cash, recognition and recurring run-rate values.

How to use the MRR Calculator

Enter plan, movement, cohort or value assumptions using the same measurement period. Choose the mode that matches your question, then calculate.

Use the convention toggles only when your internal reporting policy intentionally treats trials, paused subscriptions, discounts or usage differently.

Formula

Plan MRR = active paid subscriptions x discounted recurring cycle value / billing cycle months. Net New MRR = New + Expansion + Reactivation - Contraction - Churn.

Included values

These values are included by default when they represent recurring paid subscription value.

  • Recurring subscription charges.
  • Recurring seat or quantity charges.
  • Recurring add-ons.
  • Committed recurring usage.
  • Recurring discounts as reductions.

Excluded values

These values are excluded by default so recurring metrics remain distinct from one-time cash and accounting revenue.

  • Setup and onboarding fees.
  • Taxes and pass-through charges.
  • Refundable deposits.
  • One-time purchases.
  • Uncommitted usage by default.
  • Free and trial subscriptions by default.

Period assumptions

MRR normalizes every included recurring value to one month. ARR annualizes that normalized value. Churn and retention annualization use survival math rather than simple multiplication.

Calculation conventions

Active paid and scheduled-to-cancel subscriptions count by default. Trial, free, paused and cancelled subscriptions are excluded unless a visible convention toggle changes that treatment.

Step-by-step calculation

The engine validates nonnegative values, converts billing cycles to months, applies recurring discounts, excludes one-time revenue by default, reconciles movements and then rounds only for display or CSV export.

Result interpretation

The headline result answers the main SaaS metric question. Supporting cards show reconciliation, retention, ARPA, CAC or target context depending on the page.

Reverse calculations

Where useful, the calculator solves related planning questions from the same inputs.

  • ARR run rate from MRR
  • Net New MRR
  • Ending MRR
  • MRR growth
  • Target MRR gap
  • Required accounts from target MRR and ARPA

Worked example

Example: 20 annual subscriptions at 1,200 per year normalize to 2,000 MRR. If starting MRR is 10,000 and Net New MRR is 1,250, ending MRR is 11,250.

Common mistakes

SaaS metric mistakes usually come from mixing billing cash, recognized revenue, one-time revenue and recurring run-rate conventions.

  • Counting setup fees as MRR.
  • Including annual cash without monthly normalization.
  • Including New MRR in NRR.
  • Ignoring recurring discounts.

Limitations

This calculator does not connect to Stripe, Chargebee, Paddle, ChartMogul or accounting systems.

  • Does not decide your billing platform's MRR policy.
  • Does not reconcile invoices.
  • Does not calculate recognized revenue.

Related metrics

MRR Calculator is part of the final Business SaaS cluster with MRR, ARR, SaaS Churn and SaaS LTV. Use the related calculators when the question changes from this page's metric.

Data hygiene checklist

Use one reporting cut-off, one currency display, one customer definition and one recurring revenue convention before comparing results across periods.

When to review the metric

Review this result after price changes, packaging changes, billing-cycle migrations, large churn events, major discount campaigns or changes in customer-status policy.

How teams can use the output

The result works best as a planning and reconciliation worksheet for operators, founders, finance teams and marketers who need a transparent SaaS metric estimate.

Frequently asked questions

What is the MRR Calculator?

It is a NexaCalc SaaS metrics tool for normalized monthly recurring subscription value.

Does this connect to billing platforms?

No. Inputs are entered manually and calculated locally in the browser session.

Does the currency selector convert amounts?

No. Currency changes display formatting only and does not fetch exchange rates.

Are trials and free plans included?

No by default. Trial and free plans are excluded unless a visible convention toggle intentionally includes trial value.

Are setup fees included?

No. Setup, onboarding, taxes and one-time revenue are excluded from recurring metrics by default.

Can platform reports differ from this result?

Yes. Billing and analytics platforms can classify discounts, trials, reactivations, pauses, cancellations and usage differently.

Is this accounting or valuation advice?

No. It is a deterministic worksheet for general SaaS metric planning.

How are undefined values handled?

The calculator labels undefined values instead of returning NaN or Infinity.

Can I export results?

Yes. Plan and segment rows support CSV export, and each result supports copy, print and share controls.

Which calculator should I use next?

Use related calculators when your question moves beyond MRR Calculator.

References

  • Stripe Docs, Billing analytics glossary and recurring revenue metric definitions. Source.
  • Stripe Docs, Monthly Recurring Revenue and active subscriber analytics concepts. Source.
  • Paddle Resources, SaaS metrics guide covering MRR, ARR, churn, ARPU, LTV, CAC and payback. Source.
  • ChartMogul Help Center, MRR and MRR movements metric conventions. Source.
  • ChartMogul Help Center, customer churn and recurring revenue churn conventions. Source.
  • Chargebee Docs and resources, subscription analytics and SaaS metric conventions. Source.

Business Phase 4 SaaS references and formula conventions reviewed on June 29, 2026.

SaaS metrics disclaimer

This calculator provides mathematical estimates from the subscription definitions and assumptions you enter. It is not accounting, investment, valuation or business advice. MRR and ARR conventions can vary between billing and analytics platforms. Results may differ depending on discount, trial, usage, cancellation and subscription-status treatment.