The Two Numbers That Build or Break Every Business
Why LTV and CAC Define Your Strategy, Growth, and Survival
By Lech Kaniuk
"Working with LTV and CAC has been the key foundation to enable us to grow our business to a global leader in online food ordering."
Niklas Östberg — CEO & Co-founder, Delivery Hero
The Problem
Most companies track revenue, users, and growth. Few track the two numbers that actually determine survival.
Customer Lifetime Value (LTV): How much profit a customer generates over time.
Customer Acquisition Cost (CAC): What it costs to win that customer.
Get these wrong, and you'll scale yourself into bankruptcy — while celebrating "growth" the whole way down.
I know because I've made these mistakes.
At OnlinePizza (now part of Delivery Hero), we discovered we were spending €45 to acquire customers worth €3. At SunRoof, no one owned the LTV metric. Both lessons cost time, money, and sleepless nights.
This book exists so you can learn these lessons in a weekend instead of a decade.
What You'll Learn
Part I: Foundation
- How to calculate LTV and CAC correctly (most companies get this wrong)
- The LTV:CAC ratio and why 3:1 isn't always "good"
- Why payback period matters more than most founders realize
- Benchmarks by business model: SaaS, e-commerce, B2B, marketplaces
Part II: The Value Driver Framework
- The decision filter that eliminates low-impact projects
- How to increase LTV: the three revenue levers and the one cost lever that destroys them
- How to decrease CAC: the CAC Triangle of targeting, conversion, and efficiency
Part III: Advanced Analytics & Strategy
- The LTV-CAC Growth Map: diagnose your position in four quadrants
- The Stratification Model: four levels of analytical depth
- Simulation-driven strategy: stress-test before you spend
Part IV: Alignment & Execution
- The LTV-CAC Alignment Protocol: align every team around value creation
- Implementation playbook: how to operationalize across product, marketing, finance, and customer success
- Pitfalls, myths, and how to fix them
Part V: The Future of Value
- The LTV-CAC Operating System: design your company around value drivers from day one
- Building a value culture: beyond metrics to organizational DNA
- Tools, templates, and tech
What's Inside
4 Proprietary Frameworks
- •Value Driver Framework (VDF)
- •LTV-CAC Growth Map
- •LTV/CAC Stratification Model
- •LTV-CAC Alignment Protocol (LCAP)
Ready-to-Use Templates
- •Executive Dashboard
- •Impact Estimation Tables
- •Cohort Retention Tracker
- •Payback Period Calculator
- •Quadrant Shift Planner
Real Case Studies
- •OnlinePizza → Delivery Hero: The €45 for €3 discovery
- •SunRoof: Restructuring around LTV ownership
- •B2B SaaS: From 2.4x to 4.1x ratio in 9 months
- •D2C brand: Catching the "sugar rush" before disaster
Actionable Worksheets
- •Value Driver Sprint
- •Alignment Mapping
- •Sensitivity Drill
- •12-Month Value Roadmap
Who This Book Is For
- Founders and CEOs who want to scale profitably, not just fast
- Marketing leaders who need to prove ROI and optimize spend by channel
- Product managers who want to build features that actually move retention and value
- Finance teams who need real unit economics for planning and fundraising
- Investors who want to evaluate the true health of a company
- Growth operators — anyone who makes decisions that affect customers or costs
"Can't I Just Learn This Online?"
You can learn WHAT LTV and CAC are anywhere.
What you can't get online:
This book isn't theory. It's the operating manual I wish I had when I was burning cash at OnlinePizza.
About the Author
Lech Kaniuk is an entrepreneur, investor, and growth strategist.
He was part of the early team at OnlinePizza (acquired by Delivery Hero), where he learned the hard lessons of unit economics during rapid international expansion.
He founded SunRoof, scaling it across European markets while developing the frameworks in this book.
He founded FaradayX, applying LTV-CAC thinking to 15-25 year energy contracts.
This book distills 15+ years of building, scaling, and occasionally breaking companies into the operating system he uses today.
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What People Are Saying
"The framework completely changed our approach and helped accelerate our business."
Lucas Klab, Founder, AnimalHotels
"The Value Lens framework helped us pivot to a much more profitable customer segment, improving all metrics in our business."
Martyn Szczepankowski, Co-founder, SunRoof
"Working with LTV and CAC has been the key foundation to enable us to grow our business to a global leader in online food ordering."
Niklas Östberg, CEO and Co-founder, Delivery Hero
Get the Book
Start mastering the two numbers that define every successful business.
Table of Contents
Part I: Foundation
- •Chapter 1: Why Two Numbers Rule Everything
- •Chapter 2: Defining the Core Metrics
- •Chapter 3: Benchmarks & Ratios That Matter
Part II: The Value Driver Framework
- •Chapter 4: Introducing the VDF
- •Chapter 5: Understanding and Increasing LTV
- •Chapter 6: Understanding and Reducing CAC
Part III: Advanced Analytics & Strategy
- •Chapter 7: The LTV-CAC Growth Map
- •Chapter 8: Levels of Analysis (Stratification Model)
- •Chapter 9: Simulation-Driven Strategy
Part IV: Alignment & Execution
- •Chapter 10: The LTV-CAC Alignment Protocol
- •Chapter 11: Implementation Playbook
- •Chapter 12: Pitfalls, Myths & How to Fix Them
Part V: The Future of Value
- •Chapter 13: The LTV-CAC Operating System
- •Chapter 14: Building a Value Culture
- •Chapter 15: Tools, Templates & Tech
Appendices
- •Glossary of Key Terms
- •Template Library
- •Worksheets for Strategy Sessions