You are analyzing the after-tax cost of debt for a firm. You know that the firms 12-year maturity, 10.50 percent semiannual coupon bonds are selling at a price of $824.12. These bonds are the only debt outstanding for the firm.

YTM 13.50%

What is the after-tax cost of debt for this firm if it has a marginal tax rate of 34 percent? (Round intermediate calculations to 4 decimal places, e.g. 1.2514 and final answer to 2 decimal places, e.g. 15.25%.)