Examining a sample of South Korean firms, of which 201 revalued assets and 899 did not during the period 2008–2009, we find that the average debt cost, equity cost, and weighted average cost of capital (WACC) are higher among the firms that revalued. Firms with higher equity costs and leverage are more likely to revalue and the propensity has a negative relationship with profitability, cash flow, and Tobin’s q. Firms that engage in revaluation experience reductions in all capital costs from year −1 to +1, comparable to those among firms that did not revalue. Our results support both the information hypothesis and the debt-cost hypothesis.