FIN.5:4.3 - Match business exposure to the project

A corporate average is usable for a project only insofar as the valued activity and financing assumptions are comparable. Investigate the economic sources of exposure: what moves demand and prices, which costs can adjust, which payments are fixed, what customers or suppliers concentrate risk, and how contracts or regulation alter the response. A familiar industry label alone does not establish the same exposure.

For a corporation with several activities, use the relevant business contribution rather than the average exposure of unrelated divisions. The bottom-up construction below allows a project without traded equity to use evidence from comparable activities. A new project serving different customers or operating with a materially different cost structure may need its own comparison. Explain the difference before deciding that finer estimation is worthwhile; numerical precision cannot rescue an economically poor peer.

Distinguish the uncertainty of the estimate from the underlying investment risk. An imprecisely estimated beta is a reason to inspect the sample, compare an alternative estimate or carry a range. Raising the central rate merely because the analyst is unsure does not identify the price of the actual risk. A larger peer set can reduce some estimation noise while introducing less comparable activities, and common source errors do not vanish through averaging.

Account for changes in business mix, contract protection and operating conditions over the valued horizon. A past regression can describe exposure that the proposed operation no longer has. In a cross-border activity, currency matching does not by itself settle the risk of customer demand, enforceability, restrictions or transfer of proceeds. Model the relevant operating and payment consequences and obtain an evidenced risk treatment; place of incorporation alone does not determine a universal surcharge.

Retain the economic reason for the chosen estimate so that a changed project can be reassessed. A rate copied without that reason gives the next analyst no way to tell whether a larger plant, a long-term offtake agreement or a different customer group changes the basis.