Description: This article is a companion to “They Go Bump in the Night: Life Insurance Policies and the Law of Material Change,” an article written by John T. Adney and Craig R. Springfield (May 2012 Taxing Times Supplement) that describes the various material change rules found in the Code, highlighting the complexities insurers face in navigating through these rules when a life insurance contract is materially changed. The Adney and Springfield article also addresses the difficulties in interpreting the tax law requirements under the various effective date rules contained in the Code sections affecting life insurance contracts.