Transitional rule.
Transitional rule. If a decedent dies after April 30, 2019, and on or before June 1, 2023, the fair market value of annuities, interests for life or a term of years, and remainder or reversionary interests based on one or more measuring lives included in the gross estate of the decedent is their present value determined under this section by using the section 7520 interest rate for the month in which the valuation date occurs (see 20.7520-1(b) and 20.7520-2(a)(2)) and factors derived from the selected mortality table, either Table 2010CM in paragraph (d)(7)(ii) of this section or Table 2000CM in 20.2031-7A(g)(4), at the option of the donor or the decedent's executor, as the case may be. If any previously filed estate tax return is supplemented to use the actuarial factors based on Table 2010CM, the supplemental return must state at the top AMENDED PURSUANT TO TD 9974. For the convenience of taxpayers, actuarial factors based on Table 2010CM appear in the current version of Table S, and actuarial factors based on Table 2000CM appear in the previous version of Table S. Both versions of Table S will be available as provided in paragraph (d)(4) of this section. The decedent's executor must consistently use the same mortality basis with respect to each interest (income, remainder, partial, etc.) in the same property, and with respect to all transfers occurring on the same valuation date. For example, gift and income tax charitable deductions with respect to the same transfer must be determined based on factors with the same mortality basis, and all assets includible in the gross estate and/or estate tax deductions claimed must be valued based on factors with the same mortality basis.