To be eligible for the waiver, qualifying taxpayers must attach Form 2210-F, available on IRS.gov, to their 2018 income tax return. This form can be submitted either electronically or on paper. The taxpayer’s name and identifying number, usually a Social Security number, must be entered at the top of the form. The waiver box—Part I, Box A—should be checked. The rest of the form should be left blank.
Further details can be found in Notice 2019-17, posted today on IRS.gov.