When this guide is useful
A study is delivered but the owner does not know how it affected the tax return.
The distinction that matters
Document the preparer's accepted cost, classification and reporting treatment. Report delivery, asset software entry and filed return implementation are separate milestones.
A worked situation to investigate
An owner receives a final PDF, while the preparer asks about prior elections and a possible accounting-method procedure.
The example is illustrative. Begin with the underlying event and its source documents, then separate missing facts from disagreements about their treatment. Work through the checks below in the order that matches your file, rather than treating a completed checklist as a tax conclusion.
Build a traceable handoff
Identify the affected person, entity or property and the relevant period. Keep original evidence, corrections and the reviewer's written conclusion connected. If the facts change after review, preserve the earlier version and ask whether the change affects implementation.