On January 29, the IRS released Publication 15, (Circular E), Employer's Tax Guide. The IRS will release a 2018 Form W-4 in the near future. Employers may continue to use the 2017 form until 30 days after the 2018 Form W-4 is released. Employees who submit new Forms W-4 for 2018 using the 2017 form will not need to submit a 2018 form. Employees claiming exempt from federal income tax withholding must submit a new Form W-4 by February 28 (extended from February 15).
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