an employee earned $46,800 during the year working for an employer when the maximum limit for social security was $137,700. the federal insurance contributions act (fica) tax rate for social security is 6.2% and the federal insurance contributions act (fica) tax rate for medicare is 1.45%. the employee's annual federal insurance contributions act (fica) taxes amount is: multiple choice $7,160.40. $670.70. $6,489.70. $2,789.20. $3,580.20.