The Secretary of Finance, in consultation with the Secretary of State, shall, on or before July 1, 2017, promulgate regulations regarding the method of estimation to create consistency in any examination or voluntary disclosure. These regulations must include permissible base periods, items to be excluded from the estimation calculation, aging criteria for outstanding and voided checks, and the definition of what constitutes complete and researchable records.
12 Del. Admin. Code § 301-1.0