SECTION 7. RECORD KEEPING

Section 6001 provides that every person liable for any tax imposed by the Code, or for the collection thereof, must keep such records, render such statements, make such returns, and comply with such rules and regulations as the Secretary may from time to time prescribe. The books or records required by § 6001 must be kept at all times available for inspection by authorized internal revenue officers or employees, and must be retained so long as the contents thereof may become material in the administration of any internal revenue law. § 1.6001–1(e). In order to satisfy the record keeping requirements of § 6001 and the regulations thereunder, a taxpayer that uses the CAV method should maintain records supporting all aspects of its inventory valuation including but not limited to cost of supplier cores.