Presented below is our summary of significant Internal Revenue Service (IRS) guidance and relevant tax matters for the week of December 3 – 7, 2018:

December 4, 2018: The IRS issued a news release granting taxpayers an extra day, until Thursday, December 6, 2018, to file any return or pay any tax originally due on Wednesday, December 5, 2018, in light of the Executive Order closing all federal agencies on December 5, 2018, as a mark of respect for President George H.W. Bush.

December 4, 2018: The IRS issued Notice 2018-95, providing transition relief from the “once-in-always-in” condition for excluding part-time employees under Treas. Reg. § 1.403(b)-5(b)(4)(iii)(B).

December 6, 2018: The IRS in Revenue Ruling 2018-32 released the interest rates for underpayments and overpayments applicable for the calendar quarter beginning January 1, 2019.

December 7, 2018: The IRS issued Notice 2018-97, providing initial guidance on the application of section 83(i) of the Code, enacted in the Tax Cuts and Jobs Act, which allows qualified employees of privately held corporations to defer paying income tax—for up to five years—on the value of qualified stock options and restricted stock units granted to them by their employers.

December 7, 2018: The IRS released its weekly list of written determinations (e.g., Private Letter Rulings, Technical Advice Memorandums and Chief Counsel Advice).

Special thanks to Le Chen in our DC office for this week’s roundup.