On 6/1/22, the IRS made available an update to the "Cost Segregation Audit Techniques Guide" (Publication 5653).  Originally issued in 2004, the purpose of the Audit Techniques Guide (ATG) was to offer guidance to IRS auditors auditing cost segregation studies.  Because the ATG is an interpretation of the law, as opposed to the law itself, it cannot be cited as precedent.  It does however provide an inside look at how the IRS views this subject. The IRS maintains a library of Audit Techniques Guides (ATGs) intended to help IRS examiners during audits by providing insight into issues and accounting methods unique to specific industries. While ATGs are designed to provide guidance for IRS employees, they’re also useful to small business owners and tax professionals who prepare...