Answer:
1. Determine the price of the bonds at January 1, 2018.
PV of face value = $900,000 / (1 + 5%)⁸ = $612,525
PV of coupon payments = $40,500 x 6.4632 (PV annuity factor, 5%, 8 periods) = $261,760
market price of bonds = $874,285
2. Prepare the journal entry to record their issuance by National on January 1, 2018.
January 1, 2018, bonds issued at a discount
Dr Cash 874,285
Dr Discount on bonds payable 25,715
Cr Bonds payable 900,000
3. Prepare the journal entry to record interest on June 30, 2018.
Dr Interest expense 43,714
Cr Cash 40,500
Cr Discount on bonds payable 3,214
4. Prepare the appropriate journal entries at maturity on December 31, 2021.
Dr Bonds payable 900,000
Dr Interest expense 43,714
Cr Cash 940,500
Cr Discount on bonds payable 3,214