The Economic Cost of the Social Security Payroll Tax
The payroll tax that funds Social Security, Medicare and Disability Insurance, called FICA, is already the largest tax most American families pay. In the future, it will claim an even greater share of Americans' incomes. From its current level of 15.3 percent (combining the employer and employee shares), the payroll tax will need to rise above 25 percent of workers' incomes by the middle of the century in order to pay benefits to today's teenagers when they retire.