A senior manager at a public accounting firm makes a base salary of $180,000 a year ($15,000 per month). Employers are required to withhold a 6.2% Social Security tax up to a maximum base amount and a 1.45% Medicare tax with no maximum. Assuming the Social Security maximum base amount is $142,800, through what month will Social Security be withheld? Social Security will be withheld through the month of September. Social Security will be withheld through the month of January. Social Security will be withheld through the month of October. Social Security will be withheld through the entire year. 0 0