Updated income-tax withholding tables for 2017 have been released by the IRS. In 2017 the amount for one withholding allowance on an annual basis is $4,050 (same as 2016). Employers will start using the revised withholding tables and correct the amount of Social Security tax withheld as soon as possible in 2017, but not later than February 16, 2017.
Employers and payroll companies handle the withholding changes, so workers typically won’t need to take any additional action, such as filling out a new W-4 withholding form. Individuals and couples with multiple jobs, people who are having children, getting married, getting divorced or buying a home, and those who typically wind up with a balance due or large refund at the end of the year may want to consider submitting revised W-4 forms.
In addition, employers will continue withholding Social Security tax at the rate of 6.2 percent of wages paid. The Social Security wage base limit increases to $127,200 ($118,500 in 2016). The Medicare tax rate remains at 1.45 percent each for the employee and employer.
The additional Medicare tax of 0.9 percent for employees (not employers) remains in effect and should be withheld from employee wages that exceed $200,000 in a calendar year, at the beginning in the pay period in which the employee’s wages exceed $200,000.