On January 1, 20X1, Fred purchased a corporate bond with a face value of $36,000 from the secondary market at a premium. The bond has a coupon rate of 8 percent and matures in five years. The market rate of the bond is a 6 percent annual before-tax return compounded semiannually. If Fred is trying to minimize interest income, what is the least amount of interest income Fred may report on his 20X1 tax return?