IRS releases new Form W-4
As a result of the new tax reform law, the IRS released a new Form W-4 for 2018 along with a new withholding calculator on February 28, 2018.
Employers are not required to obtain new forms from their employees for 2018. But, because of the new tax law, you may want to encourage your employees to review their withholdings to be sure they are appropriate. As a reminder, the IRS recommends employees review their withholdings and submit a new W-4 at the beginning of each year or when personal circumstances change.