N.Y. Comp. Codes R. & Regs. tit. 20, § 3-9.4
(b) A stockholder of a tax exempt DISC must do the following:
(c) The consolidated report must be filed for the accounting period of the stockholder. If the accounting period of the DISC does not coincide with that of the stockholder, activities of the DISC for its entire accounting period ending during the stockholder's accounting period must be included in the consolidated report.
Example:
Assume a stockholder reports on a calendar year basis and its tax exempt DISC on the basis of a June 30th fiscal year. The stockholder must include in its report for the calendar year 1973 its attributable share of the receipts, expenses, assets and liabilities shown on the DISC's report for the period ending June 30, 1973.
Tax Law, §§ 208(9)(i) and 210(3)(a)