Description: This article Provides a description of an IRS Directive that provides a safe harbor tax reporting position for computing tax reserves for pre-2018 tax years for annuity contracts subject to AG43 and VM-21 and life insurance contracts subject to VM-20 Principal Based Reserves methods. The safe harbor is required to be implemented on the 2017 tax return, with certain spread amounts in some cases to future tax years starting in 2018.