Tax Court 
Can a Taxpayer Prove Timely Filing of a Tax Court Petition If There Is No Postmark on the Envelope?
Michael J. Seely and Nancy P. Seely, Petitioners v. Commissioner of Internal Revenue, Respondent T.C. memo, 2020-6 | Filed January 13, 2020 If a taxpayer receives a statutory notice of deficiency (90-day letter) and wishes to petition the Tax Court, the taxpayer has 90 da... Steven R. Diamond, CPA