use both the wage-bracket method and the percentage method to calculate federal income tax withholding for an employee who has submitted a pre-2020 Form W-4. Refer to Publication 15-T. NOTE: For simplicity, all calculations throughout this exercise, both intermediate and final, should be rounded to two decimal places at each calculation. 1:Thomas Fortuna (married; 4 federal withholding allowances) earned weekly gross pay of $745. For each period, he makes a 401(k) retirement plan contribution of 10% of gross pay. Using wage-bracket method: Federal income tax withholding = $ 11.00 Using percentage method: Federal income tax withholding = $ 10.35 2:Barbara Houlihan (single; 1 federal withholding allowance) earned daily gross pay of $320. For each period, she makes a 401(k) contribution of 12% of gross pay. Using wage-bracket method: Federal income tax withholding = $ 38.80 Using percentage method: Federal income tax withholding = $ 38.51 3:Marcus Xavier (married; 5 federal withholding allowances) earned monthly gross pay of $3,650. He participates in a flexible spending account, to which he contributes $200 during the period. Using wage-bracket method: Federal income tax withholding = $ 64.00 Using percentage method: Federal income tax withholding = $ 64.30