Engineered Tax Services is proud to offer a comprehensive and detailed Asset Disposition Calculator. This calculator has been developed under a stringent and detailed interpretation of the Tangible Property Regulations (TPR) T.D. 9689 Guidance Regarding Dispositions of Tangible Depreciable Property issued by the IRS in 2014. These regulations provide guidance on using the Producer Product Index (PPI) to calculate a disposition deduction for fixed assets removed, demolished, retired or no longer in service. However, the most detailed and precise method for determining disposition is via a detailed engineering study, or a detailed cost segregation study, which is also provided by ETS.