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Profitability

Profitability Visibility

PROFITABILITY VISIBILITYSee profit where it actually lives.Net profitability - revenue minus all costs - at the level of individual customers, products, services and channels.DIMENSION 02 / 07PROFITABILITY HEALTH CHECKPEAK · 280%100%CLIENTS, RANKED BY PROFIT →Fig. 02 - Whale curveCUMULATIVEDefinitionWhat is Profitability Visibility?Profitability visibility is the ability to see net profitability - revenue minus all costs […]

PROFITABILITY VISIBILITY

See profit where it actually lives.

Net profitability - revenue minus all costs - at the level of individual customers, products, services and channels.

DIMENSION 02 / 07PROFITABILITY HEALTH CHECK
Cumulative profit climbs to a peak of 280 percent, then falls back to 100 percent as loss-making clients are added.PEAK · 280%100%CLIENTS, RANKED BY PROFIT →
Fig. 02 - Whale curveCUMULATIVE
Definition

What is Profitability Visibility?

Profitability visibility is the ability to see net profitability - revenue minus all costs - at the level of individual customers, products, services, or channels. The famous Whale Curve analysis typically shows that 20-30% of customers generate 150%+ of total profit, while the tail destroys value.

Why it matters

Blind growth erodes margin.

Without granular profitability data, businesses grow revenue while unknowingly eroding margin. Sales teams win unprofitable deals. Pricing is intuitive rather than cost-informed. And strategic decisions are made on aggregate numbers that mask underlying reality.

Maturity Levels

Where does your organisation stand?

Level 1
01
Blind

P&L available only at company level. No product or customer profitability view.

Level 2
02
Partial

Gross margin by product or business unit. No full cost-to-serve visibility.

Level 3
03
Structured

Net margin by product and key customer segments. Some overhead allocation.

Level 4
04
Full Visibility

Whale Curve analysis. Full net profitability by customer, product and channel.

How to improve

Three moves toward true visibility.

01
Segment Your Portfolio

Define the dimensions you want to measure: customers, products, channels, geographies. Start with what drives most revenue.

02
Allocate All Costs

Apply full cost allocation - including overhead, support, and indirect costs - to each segment using activity-based logic.

03
Build the Whale Curve

Rank customers or products by cumulative profit contribution. Identify your profit makers, break-even accounts, and value destroyers.

Comparing approaches

Revenue, margin, or true profit?

ApproachOverhead IncludedCustomer-Level ViewActionable Insight
Revenue-Only View
Gross Margin Only
Full Net Profitability
Strong~PartialWeak
FAQ

How to build a profitability dashboard

Most profitability dashboards fail the same way: they show revenue beautifully and profit barely at all. Revenue is easy to chart and comforting to look at, but it is the wrong centre of gravity. A dashboard earns its place when the first thing it answers is "who and what actually makes money?" - and that means true profit per customer, product and segment, built on full cost-to-serve, sitting front and centre.

1 · Overview

whale curve

2 · Ranked list

best → worst

3 · One account

small orders · returns · rush · support

FIG 53.1 · Each view is a drill-down of the last: book → account → cause.

Three linked views are usually enough:

  • The overview - the whale curve and the headline split of value creators, break-even and destroyers.
  • The ranked list - every customer or product sorted by true profit, so the tail is impossible to ignore.
  • The single account - drill into one and see the drivers (small orders, returns, rush) that decide its margin.

Everything else is optional. The test for any tile is simple: does it change a decision? If not, it is decoration.

Management accounts vs statutory accounts

The two sets of accounts are often confused because they share a starting point - the same ledger, the same transactions - but they exist to answer opposite questions. Statutory accounts answer "what is the legally correct picture of the whole company?" Management accounts answer "where, inside the company, are we making and losing money, and what should we do about it?" Forcing one to do the other's job is where reporting goes wrong.

One ledger · same source data
Statutory
  • legal standards
  • whole entity
  • backward-looking
  • for tax / audit
Management
  • by customer
  • by product
  • near real-time
  • for decisions
FIG 56.1 · Same data, two jobs - statutory for the rules, management for the running of the business.

The practical consequences matter. Statutory accounts are constrained: they must follow standards, value inventory a prescribed way, and present the entity as a whole - which is exactly why they cannot tell you that customer B is unprofitable. Management accounts are free of those constraints and can re-cut the same euros by customer, product, segment or activity, refreshed monthly. Profitability analysis is management accounting at its most useful: the same money, organised around the decision rather than the regulation.

Frequently asked questions.

What is the Whale Curve?
The Whale Curve is a visualisation of cumulative profitability when customers are ranked from most to least profitable. The curve typically peaks well above 100% of total profit, then descends as loss-making customers erode the total.
How many customers are typically unprofitable?
Research consistently shows that 40-60% of customers are unprofitable when full costs are allocated. Yet most businesses have no visibility into which ones - and continue serving them at the same cost.
Can I get profitability visibility without a full TDABC model?
You can get partial visibility with simpler methods, but the accuracy is limited. A TDABC model gives you reliable profitability data that you can act on with confidence.
What should I do with unprofitable customers?
Not all unprofitable customers are equal. Some have strategic value or growth potential. The goal is to understand root causes - is it pricing, complexity, or volume? - and then decide: reprice, simplify, or exit.
What is cost-to-serve and how do I measure it?
Cost-to-serve is the total cost of everything beyond the product itself: order handling, delivery, returns, support, financing and account management. You measure it with time-driven activity-based costing, which assigns each activity to customers by the minutes they actually consume rather than by a flat percentage. In complex service businesses cost-to-serve commonly runs 25-40% of revenue. Our cost-to-serve analysis article walks through how to measure and reduce it.
How do I segment customers by profitability?
You segment customers by plotting each one's true profit and cost-to-serve, then grouping them into bands: value creators, break-even, and value destroyers. A practical model uses the whale curve - roughly the top 20% that create 150-300% of profit, the middle 60% near break-even, and the bottom 20-30% that destroy value. Each band gets a different play: protect and grow the top, convert the middle, reprice or restructure the bottom.
Profitability analysis vs cost accounting?
Cost accounting records and reports what things cost for compliance and stock valuation; profitability analysis uses cost information to decide where a business actually makes and loses money. One looks backward and must follow accounting rules; the other looks forward and serves decisions about customers, products and pricing. They are complementary - profitability analysis builds on cost data but reorganises it by customer and product rather than by ledger account. Our profitability visibility page explains how the management view differs from the statutory one.
How do I build a profitability dashboard?
You build a profitability dashboard by putting true profit per customer, product and segment at the centre, not revenue, and letting users drill from the whole book down to a single account. Start from a cost model that assigns full cost-to-serve, then show the whale curve, the value creators and destroyers, and the few drivers behind each. The discipline is ruthless focus: a dashboard that shows everything decides nothing. Three or four views that drive action beat a wall of charts that drive none.
What KPIs show true customer profitability?
The KPIs that show true customer profitability go beyond revenue and gross margin to net profit per customer after full cost-to-serve, cost-to-serve as a percentage of revenue, and each customer's position on the whale curve. Useful supporting metrics are average order size, order frequency, returns rate and the share of profit held by the top and bottom deciles. The single most revealing one is net profit per customer, because it nets every driver into one comparable figure. We detail the full KPI set on our profitability visibility page.
How often should profitability be reported to management?
Profitability should reach management monthly for the headline customer and product view, with a deeper quarterly review for structural decisions and trends. Monthly keeps the numbers live and lets margin drift get caught early, while quarterly gives space to act on segments, pricing and mix without reacting to noise. The cadence works only if the underlying model refreshes automatically from ERP and ERP data; if each report is a manual rebuild, it slips and goes stale. The aim is a standing rhythm, not an annual fire drill.
Management accounts vs statutory accounts - what's the difference?
Statutory accounts are prepared to legal standards for tax, audit and external stakeholders; management accounts are prepared for internal decisions and can be cut any way that helps run the business. Statutory reporting must follow accounting rules and looks backward at the whole entity; management reporting is free to show profit by customer, product, segment or activity, in close to real time. Both draw on the same underlying data but answer different questions. Profitability analysis lives firmly in the management view, where decisions are actually made.
How do I get product and customer profitability in one view?
You get product and customer profitability in one view by building both on the same activity model, so a single cost engine can slice profit either way and even cross the two - this product, with this customer. Reporting them separately, from different spreadsheets, is what creates numbers that do not reconcile. With a TDABC model the cost of every activity is assigned once and can be aggregated by product, by customer, or by the intersection. The combined view is where the real insight sits: a good product sold mostly to bad customers is still a problem.
What is segment / business-unit profitability analysis?
Segment or business-unit profitability analysis measures true profit for a defined slice of the business - a region, channel, division or product family - after fairly allocating the shared costs that serve it. The hard part is the shared costs: a segment can look profitable on direct margin yet lose money once its real use of central functions, logistics and support is charged in. Activity-based allocation makes that charge defensible rather than arbitrary. Done well, it shows which segments truly fund the business and which are carried by the others.
Public evidence

What companies published this quarter

Evidence reviewed 6 August 2026. Each item below is quoted from the company’s own published statement and links to it. None of these companies is a client of Cost and Profitability Consulting, and nothing here is a comment on how any of them is run.

  • Stora Enso (Finland, 23 July 2026): reported a Q2 adjusted EBIT margin of 6.6 per cent against a medium-term target of above 10 per cent, with the IFRS operating result down to EUR 16 million from EUR 64 million. Source
  • Volkswagen Group (Germany, 24 July 2026): reported a first-half operating return on sales of 3.8 per cent against its own full-year target range of 4.0 to 5.5 per cent, and cut its revenue forecast. Source
  • Sligro Food Group (Netherlands, 23 July 2026): published half-year figures showing EBITDA of EUR 48 million, or 3.8 per cent of revenue, against a stated group target of a 7.5 per cent EBITDA margin. Source
  • Talgo (Spain, 22 July 2026): reported first-half losses of EUR 27 million on revenue of EUR 376 million with an 8.4 per cent EBITDA margin, against a 2026 operating margin target of 7.5 to 8.5 per cent. Source

Four companies, four different industries, one shape: a published target, a published shortfall, and no published account of which products or customers sit on either side of the gap. The target is a group number. The gap is not: it is made of specific accounts and specific lines, and closing it starts by being able to name them.

References

Sources

Canonical works behind this method. Each opens in a new tab.

  1. Paper
    Measuring and Managing Customer ProfitabilityKaplan, R. S. & Narayanan, V. G. (2001). Journal of Cost Management 15(5).
    Canonical source of the whale curve and cumulative customer-profitability analysis.
  2. Paper
    Measure Costs Right: Make the Right DecisionsCooper, R. & Kaplan, R. S. (1988). Harvard Business Review 66(5).
    Seminal argument that averaged overhead distorts true product and customer cost.
  3. Paper
    Time-Driven Activity-Based CostingKaplan, R. S. & Anderson, S. R. (2004). Harvard Business Review 82(11).
    The founding article defining TDABC and its two-parameter model.
  4. Book
    Cost & Effect: Using Integrated Cost Systems to Drive Profitability and PerformanceKaplan, R. S. & Cooper, R. (1998). Harvard Business School Press.
    Comprehensive framework linking ABC to product and customer profitability.
Start here

Find out where your hidden margin lives.

The Profit Check takes 12 to 15 minutes. No data upload. You get a personalised profitability diagnostic.

Proof

A distributor in New Zealand. €1.335M of cost-to-serve made visible, then halved, and 830 loss-making customers brought down to 295.

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Who you would be talking to

Miguel Guimarães, Founding Partner

Cost and profitability practitioner for 25+ years. Lectured alongside Professor Robert S. Kaplan at the CFO conference in Amsterdam (2009).

Call +351 910 313 731

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Miguel Guimarães

Reviewed by

Miguel Guimarães

Founding Partner, Cost and Profitability Consulting

More than 150 Time-Driven ABC engagements across 11 sectors since 2010, working within the Kaplan and Anderson framework.

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Most read
  1. 1Time Driven Activity Based Costing
  2. 2Cost-to-Serve Analysis
  3. 3The Whale Curve
  4. 4TDABC vs ABC
  5. 5Make-or-Buy and Relevant Costs
  6. 6Cost-Volume-Profit (CVP) and Break-Even Analysis
  7. 7Customer Profitability Analysis
  8. 8Methods & Frameworks: how we cost, defensibly
  9. 9TDABC for Financial Services
  10. 10How to calculate cost to serve, step by step