10 How To Master Cost and Profitability Models

Seventeen cost and profitability models, each taught end to end — with the worked models to run them.

Cost and profitability analysis is how a business understands what it truly costs to make and to serve — and where the money is actually made. This handbook teaches all seventeen models in the Cost and Profitability category — one chapter each — from the cost-behaviour and break-even models that separate fixed from variable, through the costing systems that trace overhead to products and customers, to the scale, scope and pricing models that shape the margin. From the Contribution Margin Model and Activity-Based Costing to Target Costing, Throughput Accounting and the Experience Curve Model.

What you get

The complete PDF handbook plus seventeen worked Excel models — one for every model in the book. Blue input cells you change, formula cells that respond, and a Read-me tab on each, so you can run the numbers on your own assumptions.

How every chapter is built

Read one and you can build any. Each model follows the same thirteen-section rhythm: the question it answers, what it is, who uses it, its anatomy, inputs and outputs, how to build it step by step, a worked example, strengths, limits and pitfalls, industry notes, how it connects to the other models, modern relevance, using AI on it, and a practitioner’s checklist.

The seventeen models

the Fixed and Variable Cost Model, the Operating Leverage Model, the Contribution Margin Model, the Break-even Model, Activity-Based Costing, Standard Costing, Marginal Costing, the Cost-to-Serve Model, the Customer Profitability Model, the Product Profitability Model, Economies of Scale, Economies of Scope, Cost-Plus Pricing, Target Costing, Throughput Accounting, Life-Cycle Costing and the Experience Curve Model.

The learning path

The chapters are ordered as a single connected build, not an alphabetical list — from how costs behave, through the systems that trace them to products and customers, to the scale, scope and pricing choices that protect the margin.

Who it’s for

CFOs, financial controllers, FP&A and commercial finance teams, and operators who must know their true costs and defend the margin on every product, customer and decision.

How to use it

Work straight through to master the category, or jump to a single model when you need it for live work.

Book 10 of the Business Framework Library, part of The Investment Banking Practitioner’s Handbook Series. Master this category on its own, or reach for the Business Framework Compendium when you want the one-page reference to all 467 frameworks.

By John Colley — Cambridge University MA · MBA with Distinction, Bayes Business School · 30+ years in investment banking, M&A and private equity.