What is remittance advice?

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Remittance advice is a document sent by a payer to a payee — typically a business to one of its suppliers — to notify them that a payment has been made and to specify which invoices the payment covers. It is the communication layer that connects a payment to the underlying liabilities it is settling.

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Without remittance advice, a supplier receiving a bank transfer has no automated way of knowing which of their open invoices that amount relates to.

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Why it matters for cash application

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Remittance advice is the input to cash application on the supplier's side — the same way that a customer's remittance advice enables a seller to apply incoming cash to the correct AR invoice. When remittance advice is missing, late, or inconsistently formatted, cash application becomes a manual investigation process: matching payments to invoices by amount, date, and context rather than by explicit reference.

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For suppliers processing high volumes of payments from multiple customers, incomplete or missing remittance advice is one of the biggest drivers of unmatched cash and open items in the AR ledger.

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Automation and remittance

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Modern AP platforms generate remittance advice automatically as part of the payment run, send it to suppliers via email or portal, and format it consistently. On the AR side, AI-powered cash application tools can parse remittance advice in multiple formats — structured data files, PDFs, email text — and apply cash automatically, even when remittance is structured differently by different customers.

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Related: Cash Application · Payment Run · Accounts Payable (AP) · Accounts Receivable (AR)