(A) If the personal representative files an amended federal estate tax return, he shall immediately file with the department an amended return covering the tax imposed by this chapter, accompanying the same with a copy of the amended federal estate tax return. If the personal representative is required to pay an additional tax under this chapter pursuant to the amended return, he shall pay the tax, together with interest as provided in Section 12-54-25, at the time of filing the amended return.
(B) If, upon final determination of the federal estate tax due, a deficiency is assessed, the personal representative shall, within sixty days after this determination, give written notice of the deficiency to the department. If any additional tax is due under this chapter by reason of this determination, the personal representative shall pay the additional tax, together with interest as provided in Section 12-54-25, at the same time he files the notice.
(C) The limitations on assessment of taxes provided in this chapter do not expire any earlier than ninety days after the personal representative provides the department with the notice required in subsection (B).