If you earn more, you’ll pay slightly more Social Security tax in 2018.
Employees will continue to pay a 6.2 percent Social Security tax on their earnings, but the amount of earnings subject to that tax is going up.
Employees will be liable for the Social Security tax until their earnings for the year exceed $128,700 in 2018. This is up from $127,200 in 2017.
Earnings above $128,700 will not be subject to Social Security tax.