Estimating Discount Rates

  • Laurence Booth University of Toronto

Abstract

Discount rates are essential to applied finance, especially in setting prices for regulated utilities and valuing the liabilities of insurance companies and defined benefit pension plans. This paper reviews the basic building blocks for estimating discount rates. It also examines market risk premiums, as well as what constitutes a benchmark fair or required rate of return, in the aftermath of the financial crisis and the U.S. Federal Reserve’s bond-buying program. Some of the results are disconcerting. In Canada, utilities and pension regulators responded to the crash in different ways. Utilities regulators haven’t passed on the full impact of low interest rates, so that consumers face higher prices than they should whereas pension regulators have done the opposite, and forced some contributors to pay more. In both cases this is opposite to the desired effect of monetary policy which is to stimulate aggregate demand. A comprehensive survey of global finance professionals carried out last year provides some clues as to where adjustments are needed. In the U.S., the average equity market required return was estimated at 8.0 per cent; Canada’s is 7.40 per cent, due to the lower market risk premium and the lower risk-free rate. This paper adds a wealth of historic and survey data to conclude that the ideal base long-term interest rate used in risk premium models should be 4.0 per cent, producing an overall expected market return of 9-10.0 per cent. The same data indicate that allowed returns to utilities are currently too high, while the use of current bond yields in solvency valuations of pension plans and life insurers is unhelpful unless there is a realistic expectation that the plans will soon be terminated.

References

L. Booth, “Estimating the Equity Risk Premium and Equity Costs: New Ways of Looking at Old Data”, Journal of Applied Corporate Finance, Spring 1999.

L. Booth, “The Dividend Tax Credit and Canadian Ownership Objectives” Canadian Journal of Economics, May 1987.

R. Cohn and J. Pringle, “Imperfections in International Financial Markets: Implications for Risk and the Cost of Capital to Firms,” Journal of Finance, March 1973.

Credit Suisse, Global Investment Returns Yearbook 2014, February 2014.

E. Fama and K. French, “The Cross Section of Expected Stock Returns,” Journal of Finance, 47, 1993.

P. Fernandez, J. Aguirreamalloa and P. Linares, “Market risk premium and Risk free Rate used for 51 countries in 2013: a survey with 6,237 answers” IESE Business School, June 26, 2013.

Financial Services Commission of Ontario (FSCO), 2012 Report on the Funding of Defined Benefit Pension Plans in Ontario, August 2013.

Financial Services Commission of Ontario (FSCO), 2013 Report on the Funding of Defined Benefit Pension Plans in Ontario: Overview and Selected Findings, March 2014.

A.Garcia and J. Yang, “Understanding Corporate Bond Spreads Using Credit Default Swaps,” Bank of Canada Review, Autumn 2009

J. Graham and C. Harvey, 2001, “The Theory and Practice of Corporate Finance: Evidence from the Field,” Journal of Financial Economics 60, 2001.

J. Hull, Options, Futures and other Derivatives, Prentice Hall, (8th edition), 2013

R. Jagannathan “The conditional CAPM and the Cross Section of Expected Returns,” Journal of Finance, March 1996

J. M Keynes, Review of Common Stocks as Long Term Investments, 1925, Edgar Lawrence Smith. J. M. Keynes, The General Theory of Employment Interest and Money, Macmillan London, 1936

M. Levy and R. Roll, “The Market Portfolio May be Mean Variance Efficient After All,” Review of Financial Studies, 2010.

K. A. H. Urquhart and M.C. Buckley, Historical Statistics of Canada, McMillan Canada, 1971.

Published
2015-04-08
Section
Research Papers