A tax-exempt municipal bond issued by McLean County is purchased by an investor with a 30% marginal tax rate. The bond has a yield of 6%. For a corporate bond issuer with similar risks, what would the yield have to be for the investor to be equally happy with the corporate bond.

In other words, what is the equivalent taxable yield?

Report your answer as a percentage and to the nearest 0.01%; e.g., enter 3.95% as 3.95.