Answer:
$7,900
Step-by-step explanation:
Calculation for the annual after-tax cost
Additional salary = $ 10,000
Marginal tax rate=21%
First step is to find the income tax benefit
Income tax benefit = $ 10,000 x 21%
Income tax benefit= $ 2,100
Second step is to find the Annual after tax cost of additional salary
Annual after tax cost of additional salary = $ 10,000 - $2,100
Annual after tax cost of additional salary = $7,900
Therefore the annual after-tax cost will be $7,900