On Jan. 11, 2018, the IRS released new tax tables for withholding of federal tax. It is required that employers implement the new tax tables in their payroll systems by Feb. 15. This means that any impact to your take-home pay due to these changes will show on your paycheck issued on March 2 at the latest.

There is no requirement for you to submit a new W-4 form for 2018 unless you would like to change your withholding elections. The W-4 form for 2018 has not yet been released by the IRS. You may continue to use the 2017 form for now.

You may want to contact your tax preparer to determine how changes due to the tax reform legislation may affect you.