NexaCalc

Business SaaS Calculator

SaaS LTV Calculator

Estimate SaaS lifetime value from ARPA, churn, margin, contribution assumptions, NRR, CAC and finite-horizon discounting.

Last reviewed: June 29, 2026Business Phase 4

SaaS metrics calculator

SaaS LTV Calculator

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

Mode

LTV inputs
Finite horizon

Segment comparison rows

Enter your values and choose Calculate to show the result.

Formula and metric conventions

Primary formula

Standard SaaS LTV = ARPA x gross margin x estimated lifetime. Estimated lifetime = 1 / monthly churn when churn is greater than zero. Finite-horizon LTV sums discounted retained contribution.

Included values

ARPA from MRR and paying accounts. Gross margin or contribution margin. Monthly churn or retention assumptions. CAC for net LTV and payback. NRR for cohort-value mode.

Excluded values

Guaranteed future revenue. One-time implementation fees by default. Unmodeled expansion outside NRR assumptions. Accounts with undefined CAC in ratio outputs.

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 SaaS LTV Calculator measures

SaaS LTV Calculator focuses on SaaS lifetime value, LTV:CAC and payback estimates. 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 SaaS LTV 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

Standard SaaS LTV = ARPA x gross margin x estimated lifetime. Estimated lifetime = 1 / monthly churn when churn is greater than zero. Finite-horizon LTV sums discounted retained contribution.

Included values

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

  • ARPA from MRR and paying accounts.
  • Gross margin or contribution margin.
  • Monthly churn or retention assumptions.
  • CAC for net LTV and payback.
  • NRR for cohort-value mode.

Excluded values

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

  • Guaranteed future revenue.
  • One-time implementation fees by default.
  • Unmodeled expansion outside NRR assumptions.
  • Accounts with undefined CAC in ratio outputs.

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.

  • ARPA from MRR and accounts
  • Estimated lifetime
  • Gross-margin LTV
  • Contribution LTV
  • Discounted finite-horizon LTV
  • NRR cohort value
  • Net LTV after CAC
  • LTV:CAC
  • CAC payback months

Worked example

Example: 100 ARPA, 80% gross margin and 5% monthly churn gives a 20-month estimated lifetime and 1,600 gross-margin LTV. With 400 CAC, LTV:CAC is 4.0x.

Common mistakes

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

  • Returning infinite LTV when churn is zero.
  • Using revenue LTV when gross-margin LTV is intended.
  • Ignoring CAC payback.
  • Assuming LTV guarantees realized customer value.

Limitations

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

  • Does not forecast real cohorts.
  • Does not guarantee valuation outcomes.
  • Does not model every upgrade, downgrade or cancellation path.

Related metrics

SaaS LTV 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 SaaS LTV Calculator?

It is a NexaCalc SaaS metrics tool for SaaS lifetime value, LTV:CAC and payback estimates.

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 SaaS LTV 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. SaaS LTV is an estimate based on ARPA, margin, churn, retention or NRR assumptions. Actual customer value may differ materially.