We test the Credit Ratings-Capital Structure Hypothesis (CR-CS) that credit ratings afect capital structure decisions of firms, using 695 firms listed on the Korea Stock Exchange. We also examine whether CR-CS is efective in the empirical models of the tradeof capital structure theory. Korea underwent structural changes since the currency crisis of 197. Our sample period is divided into the pre-crisis term of 1995 to 19 97 and the post-crisis term of 1998 to 2005. Our empiric al results are as follows.First, the CR-CS is not supported in the former term but suppor ted in the latter term. Second, while the variable turns out to be not significant, the variable has a significantly negative efect on the debt ratio, reflecti ng an upward bias in the Korean ratings. Third, variables of credit ratings are also significan tly negative in the tradeoff models.
credit ratings,capital structure,Credit Ratings-Capital Structure Hypothesis (CR-CS),tradeoff theory