TY - JOUR AU - Jagannathan,Ravi AU - Meier,Iwan TI - Do We Need CAPM for Capital Budgeting? JF - National Bureau of Economic Research Working Paper Series VL - No. 8719 PY - 2002 Y2 - January 2002 UR - http://www.nber.org/papers/w8719 L1 - http://www.nber.org/papers/w8719.pdf N1 - Author contact info: Ravi Jagannathan Kellogg Graduate School of Management Northwestern University 2001 Sheridan Road Leverone/Anderson Complex Evanston, IL 60208-2001 Tel: 847/491-8338 Fax: 847/491-5719 E-Mail: rjaganna@northwestern.edu Iwan Meier HEC Montreal 3000, chemin de la Cote-Sainte-Catherine Montreal (Quebec) H3T 2A7 Canada E-Mail: iwan.meier@hec.ca AB - A key input to the capital budgeting process is the cost of capital. Financial managers most often use the CAPM for estimating the cost of capital for which they need to know the market risk premium. Textbooks advocate using the historical value for the U.S. equity premium as the market risk premium. The CAPM as a model has been seriously challenged in the academic literature. In addition recent research indicates that the true market risk premium might have been as low as half the historical U.S. equity premium during the last two decades. If business finance courses have been teaching the use of the wrong model along with wrong inputs for twenty years, why has no one complained? We provide an answer to this puzzle. ER -