Answer:
Cash in the CD (with no penalty) and lend Roy the funds at 2% interest.will maximize the family’s after-tax wealth
Explanation:
According to the original question, we have the marginal tax bracket as 33%, rather than 32%
Roy was also given to have a 12% marginal tax bracket.
Do confirm if these are right the values or else, substitute your values into the values used in the calculations and you will still get your right answer.
Working:
1) Roy borrows from the bank with Hal’s guarantee provided to the bank
Interest Revenue to Family = 3.5%*150000 = $ 5250
Tax Expenses = 5250*33% = $ 1732.50
After Tax Interest Revenue = $ 3517.50
After Tax Interest Expenses = 150000*4%*(1-15%) = $ 5100
Change in Family’s after-tax wealth = 3517.50 - 5100
Change in Family’s after-tax wealth = - $ 1582.50
Cash in the CD (with no penalty) and lend Roy the funds at 2% interest.
Interest Revenue to Family = 2%*150000 = $ 3000
Tax Expenses = 3000*33% = $ 990
After Tax Interest Revenue = $ 2010
After Tax Interest Expenses = 150000*2%*(1-15%) = $ 2550
Change in Family’s after-tax wealth = 2010-2550
Change in Family’s after-tax wealth = - $ 540