What Is Remittance Advice?
Remittance advice is a notice a buyer sends to a supplier explaining which invoices a payment covers. It is not the payment itself. It is the accompanying detail that tells the supplier how to apply the money, which matters most when one payment settles many invoices at once.
What Remittance Advice Includes
- Payment total and date: the gross amount sent and when it was issued.
- Invoice numbers: every invoice the payment is intended to settle.
- Amount per invoice: how the total splits across those invoices.
- Deductions applied: credit memos, early payment discounts, or short-pays taken.
- Payment reference: the ACH trace or check number the supplier will see on their bank feed.
EXAMPLE
A buyer sends $47,850 covering six invoices. The remittance shows five invoices paid in full totalling $48,600, less a $750 credit memo for a short shipment applied to invoice #4412. Without that line, the supplier sees a $750 shortfall and opens a dispute.
How Remittance Advice Is Sent
- Emailed PDF or spreadsheet: the most common method for mid-market buyers.
- EDI 820: a structured electronic format that posts directly into the supplier's system.
- Supplier portal: the buyer uploads detail to a portal the supplier logs into.
- Attached to the payment: ACH addenda records carry limited detail alongside the funds.
The format matters less than the linkage. A structured file posts automatically to the supplier's receivables; an emailed PDF still requires someone to read it and key the application manually.
Why Missing Remittance Detail Creates Work on Both Sides
When a supplier receives a lump sum with no explanation, someone on their side has to reverse-engineer which invoices it settles before those invoices can be closed. Any invoice they cannot match stays open on their ledger, which is what triggers the collections call to a buyer who has in fact already paid.
That call lands on the buyer's AP team, which then has to reconstruct the payment detail after the fact. The work is duplicated because the information existed at payment time and simply was not transmitted.
EXAMPLE
A supplier receives a $22,000 ACH with no remittance. They apply it oldest-invoice-first, which happens to leave a disputed $1,900 invoice showing as paid and a current invoice showing as open. Two months later both parties are reconciling statements to untangle it.
Frequently Asked Questions About Remittance Advice
1. What is remittance advice?
Remittance advice is a notice a buyer sends to a supplier explaining which invoices a payment covers. It is not the payment itself but the supporting detail that tells the supplier how to apply the funds received.
2. Is remittance advice a legal requirement?
In most cases it is a business courtesy rather than a legal obligation, though many suppliers request it as a condition of smooth account management and some supply contracts specify that it accompany payment.
3. What information should remittance advice contain?
The total payment amount and date, the specific invoice numbers being paid, the amount applied to each invoice, any credits or discounts taken, and a payment reference such as an ACH trace or check number.
4. What is the difference between remittance advice and an invoice?
An invoice is issued by the supplier before payment, requesting money. Remittance advice is issued by the buyer at or after payment, confirming which invoices the money settles. They move in opposite directions.
5. What happens when remittance advice is missing?
The supplier has to guess which invoices a lump-sum payment covers. Misapplied payments leave invoices showing as open, which triggers collections contact on balances that were already paid and forces both teams to reconcile the payment after the fact.
