Check the records before relying on the total
Keep the income statements and other relevant sources for the period together. If a document was corrected, preserve both versions and note which one supports the return entry. A figure on a draft should remain distinct from the version actually filed; a well-organized folder does not by itself establish that every item was reviewed correctly.
Make the review questions visible
Identify missing statements, unfamiliar entries, or differences that need qualified interpretation. Record the source and date for information used in a working calculation. Avoid treating a hoped-for refund as a reason to ignore an unresolved fact. The checklist is preparation for review, not a calculation of credits, eligibility, or a promised payment.
Keep the submission record with the return
Retain the version used and the evidence appropriate to its filing status. If professional preparation is proposed, ask who reviews the entries and how questions or later corrections will be handled. Preserve any later notice with the return file. A traceable record lets a refund discussion begin from actual information rather than from an amount remembered without its supporting pages.