$3878.55
Explanation:
Step 1 :
It is given that Kristy has a biweekly gross earnings of $1950.
Since it is bi-weekly payments there are 26 payments in the year.
Gross earnings per year = 1950 * 26 = $50,700
Step 2 :
It is given that the social security tax is 6.2% up to $128,400. Kristy's earnings of 50,700$ does not exceed the threshold $128,400, hence 6.2% of her entire income is subject to social security withholding.
Social security withholding = 6.2% of 50,700 = 6.2*50700/100 = $3143.40
Step 3 :
It is given that Medicare tax is 1.45% with no wage limit
Medicare withholding = 1.45% of 50,700 = 1.45*50700/100 = $735.15
Total withholding = Social Security withholding + Medicare withholding 3143.40 + 735.15 = $3878.55
