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Stripe Payments & SaaS Billing Systems · Lesson

Cohort Analysis and Customer Lifetime Value (LTV)

Measure long-term revenue health by grouping customers into cohorts and computing Customer Lifetime Value from Stripe subscription data.

Cohort Analysis and Customer Lifetime Value (LTV) is a free Stripe Payments & SaaS Billing Systems lesson on CoddyKit — lesson 4 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Stripe Payments & SaaS Billing Systems learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.

What Is a Cohort?

A cohort is a group of customers that share a start point, usually the month they first subscribed.

Tracking cohorts over time reveals whether newer customers behave better or worse than older ones.

Why Cohorts Beat Averages

A single churn average hides trends. Cohort tables show retention curves per signup month, exposing whether product changes improved stickiness.

Building a Cohort Key

Bucket each customer by the year-month of their first successful charge.

function cohortKey(firstChargeISO) {
  return firstChargeISO.slice(0, 7); // YYYY-MM
}
console.log(cohortKey('2026-03-14T10:00:00Z'));

Retention Matrix

For each cohort, count how many customers are still active in month 0, 1, 2, and so on. The result is a triangular matrix.

  • Rows = cohorts
  • Columns = months since signup

Computing Retention Percentage

Divide active customers in month N by the cohort's original size.

function retention(active, cohortSize) {
  return cohortSize === 0 ? 0 : Math.round(active / cohortSize * 100);
}
console.log(retention(72, 100) + '%');

Defining Lifetime Value

LTV estimates total revenue a customer brings before churning. A simple model is:

LTV = ARPU / churn rate

Where ARPU is average revenue per user per period.

Calculating ARPU

Average Revenue Per User divides total recurring revenue by active customers.

function arpu(monthlyRevenueCents, activeCustomers) {
  return activeCustomers ? monthlyRevenueCents / activeCustomers / 100 : 0;
}
console.log(arpu(4800000, 1200)); // dollars

Estimating LTV

Combine ARPU and churn to project lifetime value.

function ltv(arpu, monthlyChurnRate) {
  return monthlyChurnRate > 0 ? arpu / monthlyChurnRate : Infinity;
}
console.log(ltv(40, 0.05)); // 800

Pulling the Data from Stripe

Use the Subscriptions and Invoices APIs (or a synced data warehouse) to source signup dates, paid amounts, and cancellation dates that feed these calculations.

Acting on the Numbers

High LTV with weak early retention suggests onboarding fixes. Low LTV with strong retention suggests pricing or upsell opportunities.

  • Compare LTV to CAC (acquisition cost)
  • A healthy SaaS targets LTV/CAC above 3

Refining the Model

Advanced LTV uses discounting, segment-specific churn, and predicted expansion revenue. Start simple, then layer in nuance as data grows.

Quick Check

Check your grasp of cohorts and LTV.

Recap

You learned to group customers into cohorts, build a retention matrix, and estimate LTV from ARPU and churn. These metrics turn raw Stripe data into strategic decisions.

Frequently asked questions

Is the “Cohort Analysis and Customer Lifetime Value (LTV)” lesson free?

Yes — the full text of “Cohort Analysis and Customer Lifetime Value (LTV)” is free to read here on the web, and the Stripe Payments & SaaS Billing Systems course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Stripe Payments & SaaS Billing Systems course, upgrade to CoddyKit PRO.

What will I learn in “Cohort Analysis and Customer Lifetime Value (LTV)”?

Measure long-term revenue health by grouping customers into cohorts and computing Customer Lifetime Value from Stripe subscription data. You practise Stripe Payments & SaaS Billing Systems with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.

Do I need any experience to start Stripe Payments & SaaS Billing Systems?

No prior experience is required. Stripe Payments & SaaS Billing Systems on CoddyKit is structured for beginners through advanced learners; this is — lesson 4 of 4, so you can start here or from the beginning and move at your own pace.

How long does the “Cohort Analysis and Customer Lifetime Value (LTV)” lesson take?

Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.

Can I write and run code in this Stripe Payments & SaaS Billing Systems lesson?

Yes. Every Stripe Payments & SaaS Billing Systems lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.

All lessons in this course

  1. Advanced Financial Reporting with Stripe Data
  2. Building Custom Analytics Dashboards
  3. Churn Prediction and Revenue Optimization
  4. Cohort Analysis and Customer Lifetime Value (LTV)
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