An EFT remittance advice is the notice a payer sends a payee explaining what a specific electronic funds transfer actually covers. The deposit lands in the bank account; the remittance advice tells you which invoices it paid, what adjustments were taken, and how the numbers add up to the amount that cleared. Without it, you see money arrive with no reliable way to match it to your open receivables.
The document can be a PDF emailed after the payment runs, a structured data file that flows straight into accounting software, or a set of addenda records riding along with the payment itself. The format depends on how the two parties are set up to exchange data, but the purpose is always the same: link the deposit to the underlying business documents.
What’s on a Remittance Advice
A remittance advice identifies both parties by legal name and usually carries the payer’s address and contact information. It shows the date the transfer was initiated and the total amount deposited. Reference numbers tie the payment to specific business documents, such as purchase order numbers, invoice numbers, or contract identifiers, so the recipient can match the deposit without guessing.
Below the header, line items break the total into categories. Each line typically shows a service date, a description of the goods or work involved, and the amount applied to that invoice. Adjustments appear here as well: early-payment discounts, sales tax, credits for returned goods, or late-payment interest. These are what explain why the deposit doesn’t match the original invoice total. If the payer withheld a contractual penalty or applied a credit memo from a previous overpayment, the remittance advice is where the math is laid out.
How the Remittance Data Travels With the Payment
The delivery method depends on the payment channel, the volume of transactions, and what both parties’ systems can handle. Most domestic business payments in the United States move through the Automated Clearing House network, and remittance data can ride along in addenda records attached to the payment entry itself.
ACH Addenda Records
For straightforward payments between businesses, the CCD+ (Corporate Credit or Debit with addenda) format allows a single addenda record carrying up to 80 characters of remittance information, which is enough for a brief invoice reference but not much else. When a payment covers multiple invoices or needs detailed data, the CTX (Corporate Trade Exchange) format supports up to 9,999 addenda records and can carry a full ANSI X12 data set with line-item detail for every invoice in the batch.1Nacha. ACH File Details The 80-character limit on CCD+ is why many payers send the detailed advice through a separate channel while the ACH payment carries only a short reference code.
EDI and ISO 20022
Larger organizations with established trading-partner relationships often use Electronic Data Interchange to transmit remittance data. The ANSI X12 820 transaction set is the standard EDI format for payment orders and remittance advice, packaging payer and payee identification, reference numbers, dates, and line-item detail into a structured file the recipient’s software can process automatically. EDI has been the backbone of business-to-business payment data for decades, though it’s expensive to implement and maintain.
ISO 20022 is a newer, XML-based messaging framework that can carry richer remittance information within the payment message itself. The messages use a common global structure that works across payment types and borders. Remittance data can be embedded directly in an ISO 20022 payment message or sent as a standalone remittance message that replaces older EDI formats.2FedPayments Improvement. Understanding ISO 20022: A Resource Guide for Financial Institutions
Email and Web Portals
For businesses without EDI capability, the most common delivery method is an automated email with a PDF attached or a link to a secure download site. These emails typically arrive within minutes of the bank releasing the funds. Many large payers also maintain web portals where suppliers log in, view payment history, and download remittance documents on demand. Portals centralize records but require the payee to check for new postings rather than receive a push notification.
International Wires
Cross-border wire transfers have historically used the SWIFT MT103 message format, which includes an optional Field 70 for remittance information such as an invoice number and payment purpose. Because Field 70 is optional, many international payments arrive with sparse or no remittance detail, leaving the recipient to work out which invoices are covered through other channels.
As of November 2025, SWIFT required financial institutions to migrate interbank payments from the MT103 format to the ISO 20022 pacs.008 format.3Kyriba. ISO 20022 Migration FAQs: Key Deadlines and Benefits Explained The new format supports substantially more remittance data. Some banks are still completing the transition, so you may see either format depending on your correspondent banking chain.
Healthcare Electronic Remittance Advice
Healthcare billing uses its own regulated version. The Electronic Remittance Advice (ERA) is an EDI transaction sent from a health plan to a provider explaining how claims were adjudicated: what was paid, what was adjusted, and why. HIPAA requires these transactions to use a specific format, the ASC X12N 835 Health Care Claim Payment/Advice standard.4eCFR. 45 CFR 162.1602 – Standards for Health Care Electronic Funds Transfers and Remittance Advice
The 835 transaction carries three standardized code sets that explain every adjustment at the claim or service-line level. Claim Adjustment Group Codes assign financial responsibility, indicating whether the adjustment is a contractual obligation, a patient responsibility, or something else. Claim Adjustment Reason Codes explain what happened, such as denial for lack of authorization or reduction to the allowed amount. Remittance Advice Remark Codes provide supplemental detail when the reason code alone isn’t enough.5Centers for Medicare & Medicaid Services. Remittance Advice Resources and FAQs
Medicare providers who want to receive ERAs enroll through their Medicare Administrative Contractor. Providers submitting paper claims or those without their own electronic submitter number complete a Separate Remittance Agreement form. You can also authorize a billing service or clearinghouse to receive ERA files on your behalf. Once a provider has been receiving ERAs for 31 days (institutional) or 45 days (professional), the MAC stops sending paper remittances.5Centers for Medicare & Medicaid Services. Remittance Advice Resources and FAQs If your practice management software supports it, the MAC can automatically post ERA data to your accounts receivable system, eliminating manual entry for payment amounts and adjustments.
Matching a Remittance Advice to the Deposit
When the remittance advice arrives, the accounting team compares it against the actual deposit on the bank statement to confirm the funds cleared. Each invoice on the advice is matched to the corresponding entry in accounts receivable and marked paid, reducing the outstanding balance for that customer.
When the numbers don’t line up, the usual causes are a discount taken without authorization, a short payment with no explanation, a transposed digit, or timing differences where the advice arrived before the deposit cleared. Contact the payer if a deduction was taken without supporting documentation. Letting discrepancies sit is how receivables balances quietly drift out of accuracy, and cleaning them up later costs far more time than resolving them fresh.
One boundary worth knowing: the formal error resolution process under Regulation E, with its 60-day notice window, applies to consumer electronic fund transfers, not to commercial or business-purpose transfers.6Consumer Financial Protection Bureau. 12 CFR 1005.11 – Procedures for Resolving Errors B2B disputes are governed by the payment agreement between the parties and UCC Article 4A.
How Long to Keep Remittance Records
Every deposit into a business bank account is potentially taxable income, and the remittance advice is your documentation of what that income represents. If the IRS questions whether you reported all your income, remittance records showing which invoices were paid and when are the kind of supporting documentation you need. Failing to keep adequate books and records is itself an indicator of negligence.7Internal Revenue Service. Accuracy-Related Penalty
The IRS requires you to keep records for as long as they’re needed to prove the income or deductions on your return. For employment tax records, which would include remittance documentation for payroll-related transfers, the minimum is four years.8Internal Revenue Service. Recordkeeping For general business income and expense records, the standard holding period is three years from the date you filed the return (or two years from when you paid the tax, whichever is later), though certain situations extend that period. Because digital storage is cheap, most accountants recommend keeping remittance records for at least seven years.
Protecting the Data
Remittance advice documents routinely contain bank account numbers, routing numbers, legal entity names, and sometimes tax identification numbers. When these travel by email, they should be encrypted or sent through a secure portal rather than attached to an unprotected message. The same applies to stored records: remittance files sitting in an unencrypted shared drive or cloud folder are a liability.
A risk-based approach works. Account and routing numbers paired with entity names are high-risk data that should be encrypted at rest (in databases, backups, and file storage) and in transit (moving between systems or over networks). If your organization uses a portal for delivery, access controls and session timeouts matter as much as encryption itself, so anyone handling remittance data can access only what they need.