Name the stream behind the receipt
A customer invoice, platform statement, or other source record can explain a receipt more clearly than a bank line alone. Group the available records by source and tax period. If several sources are involved, create an index before producing a combined figure so that the reason for each entry remains available.
Compare the records without forcing agreement
A statement and a deposit may use different dates or describe the amount differently. Preserve the documents and write the specific question created by the difference. Keep transfers, refunds, or other uncertain entries marked for review rather than categorizing them from appearance. The purpose is to establish a readable source trail, not to assume the final tax treatment.
Use the trail for a focused discussion
Identify the source that remains incomplete and what additional record could clarify it. Bring your working register with the return or notice relevant to the period. Ask how the information should be reviewed before it is used in a filing or tax-debt proposal. Keep a copy of the evidence and notes supplied, with a record of the confirmed channel used for any private handoff.