When money arrives from an unknown payer, verify the bank credit and preserve its full reference, narration, amount and date. Ask the bank for available remitter detail and compare the evidence with customer balances, advances, refunds and other expected receipts. Do not assume the credit is sales or refund it to a different account merely because someone requests it.
The bank movement and its accounting purpose are separate questions. Reflect the confirmed movement appropriately in the books, using a controlled temporary receipt account where needed while classification remains unresolved. Give the item an owner and a review date so it does not become a permanent unexplained balance.
Confirm what the bank actually shows
Consider an illustrative Chennai industrial-parts supplier receiving ₹36,000 with a shortened individual name in the narration. Accounts downloads the transaction detail rather than relying only on an SMS. It confirms the receiving account and the posted credit.
Retain the full bank reference and any available remitter information. RBI's NEFT guidance states that remitter information and transaction references can help trace incoming funds. Ask through official bank channels where the statement is insufficient.
Do not circulate the entire bank statement to a wide customer group asking who paid. Share only the minimum necessary transaction detail with the people investigating the receipt, and use established customer contacts to confirm possible matches.
Compare plausible sources without deciding by amount alone
Search open invoices, promised payments, customer advances, supplier refunds, owner funding and transfers between the business's own accounts. Two customers may each owe ₹36,000, so a matching invoice amount is only a candidate.
Ask sales or collections staff whether a customer planned a payment, but obtain remittance or other supporting evidence before final allocation. A familiar payer surname can belong to a director, employee or unrelated person.
ICAI's bank-reconciliation material recognises direct receipts missing from the books, while the appropriate counterpart depends on the underlying transaction. A bank credit alone does not establish that new revenue arose on that date.
Keep a visible investigation record
Record the amount, date, full reference, source account information available from the bank, candidate parties, inquiries made and supporting responses. Note whether the bank movement has already been posted and to which temporary or customer account.
This last point prevents duplicate cash. One colleague may record the statement credit while another later posts the customer's remittance. The investigation should show whether the next step is a new bank entry or only a reallocation of the existing counterpart.
Keep unresolved candidates separate. Do not attach the credit to the first customer contacted and then rely on a later reversal if the guess proves wrong. That can affect reminders, credit limits and future invoice allocations in the meantime.
Work through a supported identification
The supplier initially records the confirmed ₹36,000 bank credit against an unidentified-receipt account under its controlled process. Further evidence establishes that an individual paid on behalf of Customer K. The customer confirms the full bank reference and identifies two invoices.
| Illustrative allocation | Amount |
|---|---|
| Confirmed bank credit | ₹36,000 |
| Invoice K-61 | ₹20,000 |
| Invoice K-67 | ₹16,000 |
| Total invoice allocation | ₹36,000 |
| Unallocated remainder | Nil |
Because the bank amount was already recorded, identification requires reclassifying the temporary counterpart to the supported customer receivable and invoice allocation. It does not require another ₹36,000 bank receipt.
Retain the evidence that the payment was intended to settle Customer K's invoices. A different remitter name does not automatically make it an owner loan or another type of receipt. The actual purpose and party documentation determine the classification.
Handle a possible mistaken transfer through the bank
If the sender or bank reports that money reached the account by mistake, contact the bank through a verified channel and preserve the case reference. Establish the appropriate correction or return process before transferring funds.
Do not send money to a different account, QR code or payment address supplied in an unsolicited message merely because it matches the received amount. The original credit may still be disputed or subject to correction, creating a risk of paying twice.
Keep any return linked to the original credit and bank instructions. Record actual bank debits when they occur and resolve the temporary receipt appropriately. Do not treat a return of mistaken funds as an ordinary purchase expense.
Resolve unusual classifications with evidence
A supplier refund should connect to its original payment or credit arrangement. An advance should identify the customer and intended future transaction. Owner-related funding or borrowing needs the appropriate documentation and treatment for the business.
If the source cannot yet be established, retain the item as an unresolved exception under a suitable accounting process rather than recognising income solely because it has aged. The appropriate reporting treatment depends on the facts and applicable framework.
Avoid netting the unknown receipt against unrelated expenses or unexplained debits. Offsetting amounts can make the balance disappear while leaving both underlying events unresolved.
Keep ownership after the first inquiry
A request sent to the bank is not closure. Record the response deadline and the next person responsible for following it up until the source and treatment are supported.
Close the item across all affected records
Confirm the bank credit is matched once, the temporary account is cleared by the supported allocation and the customer invoices show the correct remaining amounts. Keep the inquiry history and final evidence together.
An unknown receipt is resolved when the business knows who paid, why and how the amount affects the books. A disciplined investigation preserves cash accuracy, avoids mistaken refunds and prevents an easy bank match from creating an unsupported revenue or customer-balance entry.