IDAPA 35.01.02.123
Additions And Penalties
Sections 63-3046, 63-3075, 63-3076, 63-3077, 63-3624(i), 63-3634, Idaho Code All additions and penalties provided in Idaho Code are incorporated in the Sales Tax Act. (7-1-26) 01. Substantial Underpayment. For purposes of enforcing the substantial underpayment penalty, the term taxable year, is for purposes of the Sales Tax Act, the twelve (12) month calendar period for annual reconciliation. The returns, for purposes of such taxable year, are the returns filed under Section 105. The taxpayer’s entire calendar year or fiscal tax year is any fraction of a twelve (12) month period occurring prior to filing a final report. (7-1-26)