Answer:
Step-by-step explanation:
1)
To determine the net settlement;
For June 30th:
The net cash receipt = receiving floating interest - pay fixed interest


For December 31st:
Net cash receipt = 


2)
Journal Entries for the period of January 1 to December 31, 2021
Date General Journal Debit ($) Credit($)
Jan 1 Cash Account/current (A/C) 300000
 Note Payable Account/current 300000
 To record the debt
June 30 Interest expense A/C
 
 9000
 9000
 To cash A/C 9000
June 30 other huge income (A/C)
 (3100 - 0) 3100 
 Interest rate swap 3100 
 To record the change in 
 derivative fair value
 At June 30, 2021;
 Since the cash settlement is 
 focused on beginning-of-year
 rates (when both fixed and floating
 rates were 6%), there is no cash 
 exchanged for interest rate swap 
 settlement. It does recognize a fall in the 
 the fair value of the interest rate trade in the 
 following half-year because of lower 
 interest rates. Other comprehensive huge
 income is calculated to reflect the decline
 in fair value.
Dec 31 Interest expense A/C
 
 8250
 8250
 To cash A/C 8250
 To record interest
Dec 31 Interest expense A/C
 
 750
 750
 To cash A/C 750
 To record net cash settlement
Dec 31 Interest rate swap A/C 7100
 other huge income 7100
 To record change in derivative
 of the fair value
 $3100(June 30) + $4000(Dec 30)
 (Fair value swap)