In response to ellenjerrycook's above "comment", whereby you were using a Mac version: In case helpful: In my case I use the "CD-version of TurboTax Premier (using the Mac OS option). And, I WAS NOT subject to an "underpayment penalty" situation (and, therefore, technically, I was not , under normal circumstances, required to file a Form 2210). As indicate in more detail in my prior "post" (above, under "View More"): I was able to successfully "submit" my Federal ands State Taxes and promptly receive an "Accepted" response from IRS and State. In my case (where I not require an "underpayment penalty"): TurboTax completed the Form 2210, "pre-filled" with Part I, Line 9, indicating "Yes"; and Part II, Box "A" "Checked" with an "X"). And, after two unsuccessful ("Rejected") attempts: I, first, completed (indicating "If applicable, '85% Waiver/Exception' requested due to Tax Reform and/or Other Reasons") the "Explain" Box (locate in the "right-side" margin of the "Box B" (however, "BOX B" WAS NOT "checked")---and, upon resubmitting it for e-file: I encountered my second reject "Reject". However, I then completed (and "checked") the Line "C" (located at the very-top of Form 2210, above "Part II---where it indicates that" IRS can figure your underpayment penalty and send a bill (if necessary)". And, upon adding (and "checking" this additional Box "C" (above Part I) and submitting it for e-file: I (finally) received a green "Accepted" notification, via TurboTax, within approximately 20-minutes. In short, I simply determined that it was probably a "better option" for the IRS to "HAVE" the Form 2210 (and NOT need it), as opposed to IRS "NEEDING" the Form 2210 (and NOT HAVING it).
(NOTE (And just my opinion, as results can vary depending on the TT Version (Free, Basic, Deluxe, Premier, Home & Business, etc.), and TT Platform (On-Line, Download or CD): In my own analysis: I determined, at least in my own case, that it was unwise to attempt to file my Returns via the frequently-discussed "Work-Around" (whereby the 2017 Tax Liability if "changed" and"altered", to "Zero", in order to "Trick" (and, circumvent) the TurboTax program (and the related Form 2210 "Part I, Required Annual Payment" and "85% Exception Smart Worksheet" TurboTax calculations) into, forcefully, arriving at a "No Underpayment Penalty" result. And, part of the reason I thought it was "unwise" to use this "Work-Around" method: Is, in reviewing many of the TurboTax "posts, it appeared, in some cases, that fellow "posters", may be under the assumption that when a "Refund: is due on the 2018 Taxes, that it might automatically imply that an "underpayment penalty" is not due or applicable. And, since the accurate 2017 Tax Liability figure is critical in determining whether an "underpayment penalty" is due: I could provide a false-result in regard to when a potential "underpayment penalty" might be actually due. In addition, the TurboTax program in very-intricately, inter-connected in terms of the various figures---and whereby, what might seem as, simply, an isolated change to one figure--- Could, potentially, cause a migration to other aspects (and related-calculations) within the TurboTax program, and, potentially, affecting the accuracy off other critical Form's data (e.g. tax refunds (and data) pertaining to "Itemized Deductions" on both Federal and State Returns; Amended Returns (if later needed); and, Turbo-Tax's "Transfers" of data from this years, "2018 Return", to next year's 2019 TurboTax calculations and forms.
As additional "feedback" (and which I though encouraging, given all the problems and challenges encountered with "Form 2210"): This morning, I checked on the "status" of my "IRS Refund" on the IRS Refund website: And, this morning, the status on the website indicated that my direct-deposit refund was approved and scheduled for deposit on 02-26-19 (and, which I e-filed my Return via TurboTax on 02-18-2019 (only 8-days before, which I was impressed with the short timeframe).
