IDAPA 35.01.01.355
Application Of Section 63-3027 -- Apportionment (Rule 355)
Section 63-3027, Idaho Code. If a corporation has business activity both within and without Idaho, and is taxable in another state as a result of this business activity, the portion of the net income or net loss derived from sources in Idaho will be determined by apportionment pursuant to Section 63-3027, Idaho Code. (4-6-23) 356. -- 359. (RESERVED) IDAHO ADMINISTRATIVE CODE IDAPA 35.01.01 Idaho State Tax Commission Income Tax Administrative Rules Section 360 Page 60