Final answer:
The postretirement benefit expense for 2020 can be calculated using the formula: Service cost + Interest cost - Expected return on plan assets + Amortization of prior service cost + Net actuarial gain or loss. Plugging in the given values, the postretirement benefit expense for 2020 is $99,052.
Step-by-step explanation:
The postretirement benefit expense for 2020 can be calculated by considering several components. The expense is composed of the service cost, prior service cost amortization, interest cost, expected return on plan assets, and the net actuarial gain or loss. To calculate the expense, we can use the following formula:
Postretirement benefit expense = Service cost + Interest cost - Expected return on plan assets + Amortization of prior service cost + Net actuarial gain or loss
Plugging in the given values:
- Service cost = $98,200
- Prior service cost amortization = $3,300
- Interest cost = ($764,200 - $107,900) * 9% = $60,352
- Expected return on plan assets = $62,800
- Amortization of prior service cost = $0 (assuming no changes in future years)
- Net actuarial gain or loss = $0 (assuming no changes in future years)
Substituting these values, the postretirement benefit expense for 2020 is:
Postretirement benefit expense = $98,200 + $60,352 - $62,800 + $3,300 + $0
Postretirement benefit expense = $99,052