On March 12, 2018, Idaho’s governor signed into law H.B. 463 (the Bill), which provides a series of changes to Idaho’s income tax law in response to H.R. 1, popularly referred to as the Federal Tax Cuts and Jobs Act (the Act). The main changes to Idaho tax law include: (i) conformity, for tax years beginning after January 1, 2018, to the IRC as of January 1, 2018; and (ii) the add-back to federal taxable income of all amounts previously deducted on the corporation’s federal tax return under: (a) IRC § 245A (the 100% DRD for certain foreign-source dividend) and (b) IRC § 250 (containing the deductions for GILTI, IRC § 78 gross-up amounts related to GILTI, and FDII). The Bill also preserves the pick-up of the Act’s one time transition tax or repatriation tax under IRC § 965 for tax years beginning in 2017 and the add-back to federal taxable income the corresponding deduction in IRC § 965, which were enacted by H.B. 355 on February 9, 2018.

However, Idaho H.B. 659, currently pending, proposes to limit the add-back of amounts deducted under IRC § 250 to the deduction for GILTI and related IRC § 78 gross-up amounts, and H.B. 684, also pending, proposes to remove the add-back of amounts deducted under IRC § 965.