Ref: United States Tax Reporter Income paragraph 31,114.

For 2017, the Social Security wage base has increased to $127,200 (from $118,500 in 2016). This means that the maximum Social Security paid by an individual on his/her wages in 2017 will be $127,200 * 6.2% = $7,886.40.

Medicare remains unchanged at 1.45% of wages up to $200,000 and 2.35% on wages over $200,000 (without limit).  [The additional 9/10 percent was added as part of the ACA (aka Obamacare) to “wealthy individuals”]..