IRS proposes increase in cost of estate tax closing letter by cldnt | Jun 2, 2026 | Tax Tips | 0 comments Proposed regulations issued Monday would raise the cost of the letter to $76, from the $56 set in 2025. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.