Sec. 1.5. (a) For purposes of determining the fair market value of each property interest transferred by a decedent, the appraisal date for the property interest is the date used to value the property interest for federal estate tax purposes. However, if no federal estate tax return is filed for the decedent's estate, the appraisal date for each property interest transferred by the decedent is the date of the decedent's death.
(b) The finally determined federal estate tax value of a property interest is presumed to be the fair market value of the property interest for Indiana inheritance tax purposes, unless the federal estate tax value is determined under Section 2032A of the Internal Revenue Code. However, the presumption is rebuttable. A property interest that is valued for federal estate tax purposes under Section 2032A of the Internal Revenue Code shall be valued for Indiana inheritance tax purposes at its fair market value on the appraisal date prescribed by subsection (a).