When this guide is useful
An owner-managed corporation pays a policy that also covers family members.
The distinction that matters
The applicable ownership, entity and payroll reporting rules matter. A health-insurance expense account alone does not establish the owner's individual deduction.
A worked situation to investigate
A dental practice reimburses its owner for a family policy but the payroll provider has not received year-end instructions.
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.