Corporate Finance

Divisional Hurdle Rates and the Company-wide Number That Misprices Half the Portfolio

See exactly how one company-wide discount rate overfunds your riskiest division and starves your safest, and build divisional rates that survive scrutiny without a research department.

  • Advanced
  • 13 min total
  • 14 chapters

What decision this helps you make: Whether your business should appraise every project against one rate or several, how to construct a divisional rate from public comparables, and how to stop the rate becoming the thing people negotiate.

What this topic is

A divisional hurdle rate is a required return set for a specific business unit according to the risk of that unit's assets, rather than the risk of the company as a whole. Most companies do the opposite: they compute one weighted average cost of capital at the group level and apply it to every project in every division, regardless of how different those businesses are.

Why it matters

The single rate is not merely imprecise. It is wrong in a predictable direction, and it is wrong twice at once. Projects riskier than the company average clear a bar that is too low and get funded; projects safer than average fail a bar that is too high and get refused. Over a few years that mechanically shifts the company toward its most volatile activities, and nobody ever decided to do it.

Who should learn it

Finance leaders who own the appraisal framework, chief executives of multi-business groups, division heads whose cases keep failing on a rate they did not choose, and anyone appraising an acquisition in an industry unlike their own.

What you will understand

  • Why the correct discount rate depends on the risk of the project, not on who is funding it
  • The measurable consequence of one rate: overinvestment in high-risk units and underinvestment in low-risk ones
  • How to build a divisional rate from public comparables in an afternoon
  • When a single company-wide rate is genuinely the right answer

Prerequisites

Common misconception

"Our cost of capital is 9%, so 9% is the bar for everything we do." The company's cost of capital is the return required on the company's existing bundle of assets: a weighted average of the businesses inside it. It is the right rate for a project of exactly average risk and the wrong rate for everything else. The logic runs back to Modigliani and Miller: the required return attaches to the risk of the assets being funded, not to the identity of the funder. A stable utility-like division inside a volatile group does not become risky because of its parent, and the group's rate does not make a speculative project safe.