Fortnightly Magazine - August 2005

Measuring Return on Equity Correctly

Why current estimation models set allowed ROE too low.

A material capital structure mismatch, which occurs frequently, can lead to material misestimates of the appropriate allowed return on equity, perhaps on the order of 2 percentage points. That is, a 9 percent estimate of the cost of equity can imply an allowed rate of return on equity of 11 percent.