ARM 42.23.609. SHORT PERIOD RETURNS

(1) Payments of estimated tax with respect to short taxable years are to be made at the times and in the amounts required for regular tax years as listed in 15-31-502 , MCA, except that any installment that is not paid before the 15th day of the last month of the short taxable year must be paid on that date. For example: (a) Corporation X, a calendar year corporation, changes to a fiscal year starting September 1. Corporation X was required to make estimated payments for the short tax year covering the periods from January 1 through August 31. Corporation X was required to make two 25% installments of estimated tax, the first on or before April 15, and the second on or before June 15, and had to pay 50% of the estimated tax on or before August 15 (the 15th day of the last month of the short tax year) , as the last installment. (2) If the tax period was three months or less, there would be no quarterly estimated payment requirement.