An incoming wire is smaller than the customer's invoice

Start with the bank's detailed receipt, then request the customer's remittance information. Identify the instructed amount and currency, credited amount and currency, payer reference and any stated charges. A short bank description can omit the information needed to explain the difference. Keep the bank reference so a trace request can identify the exact payment.

Bank detail can distinguish original payment amounts, converted amounts, exchange rates and charges. Coutts documents such fields in its transaction-information guidance. Availability varies by bank and payment route, so ask the receiving bank what it can provide instead of inferring the missing components from the net credit.

Compare amounts in the same currency before calculating a shortage. If the invoice and receipt use different currencies, establish the agreed invoice currency and the payment instructions. The conversion rate in the bank record may explain part of the movement, while transaction charges or a customer's partial payment explain another part.

For illustration, a customer instructs $10,000 and the receiving account shows $9,970 with an evidenced $30 bank charge. The accounting review differs from a customer instructing only $9,970 against a $10,000 invoice. In the first case the gross payment and charge need to be considered; in the second, the remittance itself is short. The contractual allocation of fees still determines whether anything further is collectible.

Ask the bank to investigate unexplained deductions. Avoid posting the entire difference to foreign-exchange loss when both the invoice and the received funds are in the same currency. Keep verified components separate from the amount still under investigation.

Review the payment terms and any instructions about fees, currencies and the amount the beneficiary must receive. Discuss an unclear term with the commercial owner or legal adviser. The accounting team should not decide a contractual dispute solely by choosing a convenient ledger account.

If management accepts a small shortfall, record the approved reason and treatment. If the customer remains responsible, leave the supported balance open and provide a clear explanation with the relevant payment details. Avoid repeatedly sending a full-invoice reminder after most of the amount has been received.

For recurring international customers, clarify instructions before the next payment. Confirm the correct account and currency through established channels. A revised invoice note should reflect an agreed commercial term, not quietly introduce a new fee obligation after the sale.

Match the bank credit to the customer payment and record evidenced charges or exchange differences under the accountant's policy. Preserve the original currency amounts and the rate evidence used. If the bank later refunds a fee, link that credit to the original transaction rather than treating it as a new customer receipt.

Keep an exception record for any unexplained remainder with the bank case reference, customer contact and next action. A material unresolved difference should remain visible in the receivables review and cash forecast. Mark the case resolved only after the customer balance and bank activity can both be explained.

Review repeated deductions by customer and payment route. That history can support clearer instructions or a different agreed collection method. It can also reveal a recurring fee being misclassified during every close, which is easier to fix in the payment mapping than through another monthly adjustment.