A TIPS bond is issued in the principal amount of $1,000, paying 3.5%. Over the security's 5-year term, the inflation rate is 4%. What is the amount of the final semiannual interest check?
A) $17.50.
B) $35.00.
C) $42.66.
D) $21.33.
Answer: The semiannual interest of a TIPS bond is computed on the basis of the inflation-adjusted principal. Because the principal increases with the inflation rate, at the end of the 5-year term, it has grown to $1,219 ($1,000 × 102% ten times). Therefore, the final interest check is for $1,219 × 1.75% (remember it is a semiannual check).