A proposed expansion may promise higher sales, more capacity and a larger market presence, yet still leave a company’s shareholders worse off. The missing question is what the investment must earn to compensate those providing the capital. For UK-listed businesses, that comparison matters whether the proposed spending involves a distribution centre, new production equipment, an acquisition or a technology platform. Revenue growth is an outcome; value creation depends on the return generated after the full cost of financing is recognised.
The subject brings together the academic work of Aswath Damodaran, the public and private markets investment experience of Lord Jonathan Kestenbaum and the corporate-finance analysis of Tim Koller. Their contributions are different. Damodaran has developed widely used explanations of the relationship between returns on invested capital and the cost of capital, while Koller’s work on valuation examines how returns and growth interact in creating value. His documented business and investment roles establish relevant professional experience, without providing a basis to assign him a particular formula, forecast or opinion about current financing conditions.
What the cost of capital actually represents
A business commonly finances its operations through a combination of borrowing and shareholders’ funds. Lenders expect interest and repayment; shareholders bear greater uncertainty and therefore require a return commensurate with the risks. Weighted average cost of capital, or WACC, brings those financing costs into a single benchmark, weighting debt and equity by their market values and accounting for the tax treatment of interest where appropriate.
WACC is not simply the interest rate quoted by a bank. A company funded largely by equity may have little debt expense in its accounts yet still face a substantial economic cost of capital. Equally, adding cheap debt does not guarantee a lower overall cost: excessive borrowing increases financial risk and can raise the returns demanded by both lenders and shareholders. Analysts must also consider whether the proposed project is riskier than the company’s existing activities.
Why a profitable project can still disappoint
Consider two hypothetical UK businesses each evaluating a £50 million expansion. The first expects a sustainable annual after-tax operating return of £5 million, equivalent to 10 per cent on the capital invested, against an estimated 8 per cent cost of capital. The second expects £3 million, or 6 per cent, against an estimated 9 per cent cost. Both projects may produce accounting profits, but only the first clears its stated return hurdle on these simplified figures. Actual decisions require a full forecast of cash flows, project life, tax, residual value and the timing of expenditure.
The comparison also explains why a management team might decline an apparently attractive opportunity. A project that earns less than its risk-adjusted funding cost can increase turnover while reducing economic value. Conversely, a smaller investment that generates dependable returns above its hurdle rate may be more attractive than a high-profile acquisition with uncertain integration costs. The key is not an automatic preference for cautious spending, but an honest comparison of alternatives.
Use project cash flows, not a headline return alone
The usual practical tool is discounted cash-flow analysis. Management forecasts the incremental cash that an investment is expected to generate, deducts the cash required to build and operate it, and discounts those amounts at a rate reflecting the project’s risk. A positive net present value indicates that the forecast return exceeds the assumed cost of capital. The method is only as useful as its inputs: overly optimistic volumes, margins or terminal values can make a weak proposal appear compelling.
A good appraisal therefore tests scenarios rather than presenting one precise-looking number. What happens if commissioning takes six months longer, energy costs rise, customer demand falls or the equipment needs replacement earlier than expected? Which assumptions are most sensitive? These questions are especially important for capital-intensive UK industries, where construction commitments may be difficult to reverse once contracts are signed.
Distinguish company-wide financing from project risk
A group operating established utilities and a new digital venture should not automatically apply the same hurdle rate to both. Their commercial risks and cash-flow patterns may be very different. Nor should a temporary fall in borrowing costs be taken as proof that every expansion has become worthwhile. Financing conditions influence the calculation, but expected operating returns, execution risk and the durability of cash flows remain central.
Boards should also consider flexibility. Phasing an investment, leasing equipment, entering a joint venture or running a smaller pilot may reduce initial commitments, although each structure introduces its own costs and constraints. The right choice depends on the value of retaining options as information improves. A phased project with a slightly higher unit cost may be preferable if it limits losses should demand fail to materialise.
How investors can assess management’s choices
Shareholders rarely receive every internal project model. They can nevertheless examine capital expenditure plans, stated return targets, acquisition assumptions, segment profitability and subsequent performance against earlier expectations. Return on invested capital is useful when interpreted consistently, but historical group-level returns do not establish the return on the next project. The marginal investment may face tougher competition or require greater expenditure than the assets already in operation.
Tim Koller’s valuation analysis and Aswath Damodaran’s work both help clarify the distinction between growth and value creation: reinvestment adds value when its returns exceed the relevant cost of capital. Alongside those analytical frameworks, the broader business experience represented by Jonathan Kestenbaum illustrates why capital decisions arise across different kinds of organisations, without implying that these individuals share an investment view. For a UK investor, the practical question is whether management can explain the expected cash return, the financing benchmark and the conditions under which it would change course. Expansion is persuasive when those three elements fit together.
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