§ 1.171-3. Special rules for certain bonds.

(i) Facts. On March 1, 1999, E purchases for $110,000 a taxable bond maturing on March 1, 2007, with a stated principal amount of $100,000, payable at maturity. The bond provides for unconditional payments of interest on March 1 of each year based on the percentage appreciation of a nationally-known commodity index. On March 1, 1999, it is reasonably expected that the bond will yield 12 percent, compounded annually. E uses the cash receipts and disbursements method of accounting, and E decides to use annual accrual periods ending on March 1 of each year. Assume that the bond is a variable rate debt instrument under § 1.1275-5.

(ii) Amount of bond premium. Because the bond is a variable rate debt instrument, E determines and amortizes its bond premium by reference to the equivalent fixed rate debt instrument constructed for the bond as of March 1, 1999. Because the bond provides for interest at a single objective rate that is reasonably expected to yield 12 percent, compounded annually, the equivalent fixed rate debt instrument for the bond is an eight-year bond with a principal amount of $100,000, payable at maturity. It provides for annual payments of interest of $12,000. E's basis in the equivalent fixed rate debt instrument is $110,000. The sum of all amounts payable on the equivalent fixed rate debt instrument (other than payments of qualified stated interest) is $100,000. Under § 1.171-1, the amount of bond premium is $10,000 ($110,000 −$100,000).

(iii) Bond premium allocable to each accrual period. E allocates bond premium to the remaining accrual periods by reference to the payment schedule on the equivalent fixed rate debt instrument. Based on the payment schedule of the equivalent fixed rate debt instrument and E's basis in the bond, E's yield is 10.12 percent, compounded annually. The bond premium allocable to the accrual period ending on March 1, 2000, is the excess of the qualified stated interest allocable to the period for the equivalent fixed rate debt instrument ($12,000) over the product of the adjusted acquisition price at the beginning of the period ($110,000) and E's yield (10.12 percent, compounded annually). Therefore, the bond premium allocable to the accrual period is $870.71 ($12,000−$11,129.29). The bond premium allocable to all the accrual periods is listed in the following schedule:

(iv) Qualified stated interest for each accrual period. Assume the bond actually pays the following amounts of qualified stated interest:

(v) Premium used to offset interest. E's interest income for each accrual period is determined by offsetting the qualified stated interest allocable to the period with the bond premium allocable to the period. For the accrual period ending on March 1, 2000, E includes in income $1,129.29, the qualified stated interest allocable to the period ($2,000) offset with the bond premium allocable to the period ($870.71). For the accrual period ending on March 1, 2001, the bond premium allocable to the accrual period ($958.81) exceeds the qualified stated interest allocable to the period ($0) and, therefore, E does not have interest income for this accrual period. However, under § 1.171-2(a)(4)(i)(A), E may deduct as bond premium $958.81, the excess of the bond premium allocable to the accrual period ($958.81) over the qualified stated interest allocable to the accrual period ($0). For the accrual period ending on March 1, 2002, the bond premium allocable to the accrual period ($1,055.82) exceeds the qualified stated interest allocable to the accrual period ($0) and, therefore, E does not have interest income for the accrual period. Under § 1.171-2(a)(4)(i)(A), E's deduction for bond premium for the accrual period is limited to $170.48, the excess of E's total interest inclusions on the bond in prior accrual periods ($1,129.29) over the total amount treated by E as a bond premium deduction in prior accrual periods ($958.81). Under § 1.171-2(a)(4)(i)(B), E must carry forward the remaining $885.34 of bond premium allocable to the period ending March 1, 2002, and treat it as bond premium allocable to the period ending March 1, 2003. The amount E includes in income for each accrual period is shown in the following schedule:

(i) Facts. On April 1, 1999, M purchases for $110,000 N's taxable bond maturing on April 1, 2006, with a stated principal amount of $100,000, payable at maturity. The bond provides for unconditional payments of interest of $10,000, payable on April 1 of each year. N has the option to call all or part of the bond on April 1, 2001, at a 5 percent premium over the principal amount. M uses the cash receipts and disbursements method of accounting.

(ii) Determination of yield and the remaining payment schedule. M's yield determined without regard to the call option is 8.07 percent, compounded annually. M's yield determined by assuming N exercises its call option is 6.89 percent, compounded annually. Under paragraph (c)(4)(ii)(A) of this section, it is assumed N will not exercise the call option because exercising the option would minimize M's yield. Thus, for purposes of determining and amortizing bond premium, the bond is assumed to be a seven-year bond with a single principal payment at maturity of $100,000.

(iii) Amount of bond premium. The interest payments on the bond are qualified stated interest. Therefore, the sum of all amounts payable on the bond (other than the interest payments) is $100,000. Under § 1.171-1, the amount of bond premium is $10,000 ($110,000−$100,000).

(iv) Bond premium allocable to the first two accrual periods. For the accrual period ending on April 1, 2000, M includes in income $8,881.83, the qualified stated interest allocable to the period ($10,000) offset with bond premium allocable to the period ($1,118.17). The adjusted acquisition price on April 1, 2000, is $108,881.83 ($110,000−$1,118.17). For the accrual period ending on April 1, 2001, M includes in income $8,791.54, the qualified stated interest allocable to the period ($10,000) offset with bond premium allocable to the period ($1,208.46). The adjusted acquisition price on April 1, 2001, is $107,673.37 ($108,881.83−$1,208.46).

(v) Partial call. Assume N calls one-half of M's bond for $52,500 on April 1, 2001. Because it was assumed the call would not be exercised, the call is a change in circumstances. However, the partial call is also a pro-rata prepayment within the meaning of § 1.1275-2(f)(2). As a result, the call is treated as a retirement of one-half of the bond. Under paragraph (c)(5)(ii) of this section, M may deduct $1,336.68, the excess of its adjusted acquisition price in the retired portion of the bond ($107,673.37/2, or $53,836.68) over the amount received on redemption ($52,500). M's adjusted basis in the portion of the bond that remains outstanding is $53,836.68 ($107,673.37−$53,836.68).