Rule 42.15.314 - CHANGES IN FEDERAL TAXABLE INCOME(1) When a taxpayer's federal taxable income is changed or corrected by the IRS, or other authority, the taxpayer must file an amended return within 180 days after the final determination date.(2) When a taxpayer changes his or her own federal taxable income by amending his or her federal income tax return, the taxpayer must file an amended return reporting these changes within 180 days after filing the federal amended tax return.(3) Interest and penalty are assessed on any unpaid tax under the original return from the prescribed due date of the original return until the department receives payment.Mont. Admin. r. 42.15.314
Eff. 12/31/72; AMD, Eff. 10/5/74; AMD, Eff. 11/3/75; AMD, 1982 MAR p. 10, Eff. 1/15/82; AMD, 1992 MAR p. 2555, Eff. 11/26/92; AMD, 1996 MAR p. 2605, Eff. 10/4/96; AMD, 2004, MAR p. 3147, Eff. 12/17/04; AMD, 2006 MAR p. 85, Eff. 1/13/06; AMD, 2008 MAR p. 178, Eff. 2/1/08; AMD, 2022 MAR p. 1763, Eff. 9/10/2022AUTH: 15-30-2620, 15-30-3404, MCA; IMP: 15-1-216, 15-30-2605, 15-30-2606, 15-30-2619, 15-30-3403, MCA