992 - Addition to tax in the case of valuation understatement.

§ 992. Addition to tax in the case of valuation understatement. In the  case  of  any  underpayment  of  a  tax imposed by this article which is  attributable to a valuation understatement, there shall be added to  the  tax  an amount equal to the applicable percentage of the underpayment so  attributed.    (a) For purposes of this section, the applicable percentage  shall  be  determined under the following table:     If the valuation claimed is    the following percent of the               The applicable    correct valuation:                         percentage is:         fifty percent or more but         not more than sixty-six         and two-thirds percent ....................  ten         forty percent or more but         less than fifty percent ...................  twenty         less than forty percent ...................  thirty    (b)  For purposes of this section, there is a valuation understatement  if the claimed value of any property is sixty-six and two-thirds percent  or less of the amount determined  to  be  the  correct  amount  of  such  valuation.    (c)  This section shall not apply if the underpayment is less than one  thousand dollars with respect to the estate of the decedent.    (d) The commissioner may waive all or any part of the addition to  tax  provided  by  this  section  on showing by the executor that there was a  reasonable basis for the claimed valuation and that such claim was  made  in good faith.