The U.S. Social Security Administration has published a fact sheet for the 2016 Social Security rates and cap. The Social Security portion (OASDI) remains 6.20%, and the Medicare portion (HI) remains 1.45%. Also unchanged is the taxable earnings cap for OASDI, which remains USD 118,500. No cap applies for HI. Click the following link for the 2016 Social Security fact sheet.