Final answer:
The net interest expense for Whispering Company as of December 31, 2020, after entering into an interest rate swap, is $30,900, which is the difference between the fixed 7% interest rate paid ($721,000) and the LIBOR-based interest rate received ($690,100).
Step-by-step explanation:
The net interest expense to be reported by Whispering Company for the note and related swap transactions on December 31, 2020, can be calculated by first determining the interest expense for the year at the original LIBOR rate and then adjusting for the interest received and paid under the swap agreement.
For the original note, Whispering would have incurred an interest expense of 6.70% on $10,300,000, which is $690,100. However, with the swap, Whispering would receive that same amount (since LIBOR applies to the swap contract too, for the first year), but it would then pay 7% on the $10,300,000 as per the fixed rate decided in the swap, amounting to $721,000. The net interest expense for Whispering Company as of December 31, 2020, would therefore be the difference between the interest paid and the interest received, which is $721,000 (paid) - $690,100 (received), or $30,900.