TY - JOUR AU - Ang,Andrew AU - Liu,Jun TI - How to Discount Cashflows with Time-Varying Expected Returns JF - National Bureau of Economic Research Working Paper Series VL - No. 10042 PY - 2003 Y2 - October 2003 UR - http://www.nber.org/papers/w10042 L1 - http://www.nber.org/papers/w10042.pdf N1 - Author contact info: Andrew Ang Columbia Business School 3022 Broadway 413 Uris New York, NY 10027 Tel: 212/854-9154 Fax: 212/662-8474 E-Mail: aa610@columbia.edu Jun Liu Rady School of Management UCSD Pepper Canyon Hall Room 320 9500 Gilman Dr MC 0093 La Jolla CA 92093 Tel: 310/825-4083 E-Mail: junliu@ucsd.edu AB - While many studies document that the market risk premium is predictable and that betas are not constant, the dividend discount model ignores time-varying risk premiums and betas. We develop a model to consistently value cashflows with changing risk-free rates, predictable risk premiums and conditional betas in the context of a conditional CAPM. Practical valuation is accomplished with an analytic term structure of discount rates, with different discount rates applied to expected cashflows at different horizons. Using constant discount rates can produce large mis-valuations, which, in portfolio data, are mostly driven at short horizons by market risk premiums and at long horizons by time-variation in risk-free rates and factor loadings. ER -