Firm A has a 21 percent marginal tax rate, and Firm Z has a 28 percent marginal tax rate. Firm A owns a controlling interest in Firm Z. The owners of Firm A decide to incur a $9,500 deductible expense that will benefit both firms. Required:
Compute the after-tax cost of the expense assuming that:
a. Firm A incurs the expense
b. Firm Z incurs the expense

a. $7,505

b.$6,840

Explanation:

a. Computation for the after-tax cost of the expense assuming that Firm A incurs the expense

Using this formula

After-tax cost = Deductible Expense - (Firm A Marginal tax rate* Deductible Expense)

Let plug in the formula

After-tax cost = ($9,500 - ($21%*9500)

After-tax cost = ($9,500 - $1,995)

After-tax cost=$7,505

Therefore the after-tax cost of the expense assuming that Firm A incurs the expense is $7,505

B. Computation for the after-tax cost of the expense assuming that Firm Z incurs the expense

Using this formula

After-tax cost = Deductible Expense - (Firm Z Marginal tax rate*Deductible Expense)

Let plug in the formula

After-tax cost =$9,500 -(28%*$9500)

After-tax cost =($9,500 - $2,660 )

After-tax cost=$6,840

Therefore the after-tax cost of the expense assuming that Firm Z incurs the expense is $6,840

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