At 4,039 feet above sea level, Mount Sunflower is the highest point in Kansas. Located in Wallace County, just east of the Kansas/Colorado border, Mount Sunflower is more than 3,300 feet above the state's topographic low point in Montgomery County in southeastern Kansas.
Employee Social Security /OASDI and Medicare. The year 2017 Social Security/OASDI tax rate for employees is 6.2 percent. The Medicare tax rate remains at 1.45 percent. The Social Security/OASDI maximum wage base increases to $127,200 for 2017. There continues to be no cap on the Medicare wage base.
The maximum OASDI (Social Security) tax payable by an employee in 2018 would be $7979.40 ($128,700 x 6.2%). There is no maximum Social Security tax payable by an employer. Social Security Tax vs. FICA Tax The term Social Security tax or OASDI is often confused with FICA taxes, which include both Social Security and Medicare taxes.