A remittance advice email is a message a buyer sends to a supplier confirming that a payment has been initiated and identifying exactly which invoices it covers. It closes the gap between the moment funds leave your account and the moment your vendor’s accounts receivable team can apply the money to the right open items. Without one, payments can sit unmatched for days or weeks, delaying credit to your account and sometimes triggering late-fee clauses on invoices you have already paid.
What to Include
The email is only useful if it gives the recipient enough detail to match your payment to specific open invoices. “Payment sent” creates more work than it solves. A workable remittance advice covers:
- Payer and payee legal names, exactly as they appear on the contract or purchase order.
- Invoice numbers, listed individually. If one transfer covers three invoices, list all three with their original amounts.
- The total payment amount, matching what your general ledger shows.
- The payment date and method (ACH, wire, check, or other). For ACH and wire, include the transaction reference number so the recipient can trace it on their bank statement.
- Any adjustments or deductions, such as a return allowance or an early-payment discount. If you sent less than the invoice total, explain why here.
Early-payment discounts are common in commercial contracts. A term like “2/10 net 30” means the buyer takes a 2% discount if payment arrives within 10 days; otherwise the full amount is due in 30. When you take that discount, state the original invoice amount, the discount percentage, and the net figure you actually sent. Vendors processing hundreds of incoming payments a day will apply yours faster when the math is already done for them.
A consistent template reduces manual-entry errors on both sides. Most companies pull these details from their ERP or accounts payable software, which can auto-populate templates from approved payment batches. Smaller operations drafting emails manually should keep a saved template with placeholder fields so nothing gets dropped.
How Payment Method Affects Timing
The payment method you reference tells the vendor when to expect the funds. ACH transfers can settle the same business day or within one to two business days, depending on whether you use same-day ACH or standard processing.1Nacha. The ABCs of ACH Domestic wire transfers typically arrive the same day. Checks add mail time plus bank processing.
A remittance advice email is not proof of payment. It signals that payment was initiated, not that funds have arrived. The vendor’s bank statement is what confirms receipt. Some payers attach a PDF of their bank’s transaction confirmation for extra verification, which helps but still is not the same as funds clearing on the recipient’s side. If a vendor asks for proof of payment after receiving your remittance advice, that is a separate and reasonable request.
Sending the Email Securely
The mechanical side is straightforward: draft the message, attach any supporting documentation, and send it to the vendor’s accounts receivable contact. The security side deserves real attention, because payment-related email threads are a primary target for business email compromise fraud.
Why Remittance Threads Attract Fraud
Business email compromise scams caused more than $3 billion in reported losses in a single year, according to the FBI’s Internet Crime Complaint Center.2FBI IC3. 2025 IC3 Annual Report The scheme typically works this way: an attacker gains access to a company’s email account through phishing, monitors ongoing conversations to identify pending payments, and injects fraudulent payment instructions into an existing thread. The fraud often takes the form of a request to update banking details, wrapped in urgent language and excuses like a claimed bank audit or the usual contact being unavailable.3United States Secret Service. Understanding Business Email Compromise
What makes these scams effective is that they ride on top of real transactions. A legitimate remittance thread about a real invoice is perfect cover for a fraudulent redirect. Attackers may also configure inbox rules inside a compromised account to auto-forward messages, letting them intercept communications without the account holder ever noticing.3United States Secret Service. Understanding Business Email Compromise
Controls on Your Side
Technically, your company’s email domain should have SPF, DKIM, and DMARC records configured. These are authentication protocols stored in your domain’s DNS settings that help receiving mail servers verify a message actually came from your organization and was not spoofed. If your IT team has not set these up, your outbound remittance emails are easier to impersonate. TLS encryption during transmission adds another layer by preventing interception of message content in transit.
On the process side, the most important control is a strict verification procedure for any request to change a vendor’s bank details. Never update payment routing based on an email request alone, even one from a known contact. Call the vendor at a phone number you already have on file to confirm the change before releasing any payment. This single step stops the majority of BEC redirects. Separating the responsibilities of entering vendor data, validating changes, and approving payments across different staff members adds further protection.
OFAC Screening Before You Release Payment
U.S. businesses face a separate compliance risk before any payment goes out. The Office of Foreign Assets Control maintains sanctions lists of individuals, entities, and countries that American companies are prohibited from transacting with. OFAC violations carry strict liability, meaning your company can face civil penalties even if you had no idea the recipient was on a sanctions list.4Office of Foreign Assets Control. OFAC FAQ 65 Best practice is to screen vendors against OFAC lists at onboarding and again before processing payments, since the lists change regularly. Many ERP and accounts payable platforms include automated screening features that flag potential matches before a batch goes out.
Keep a Copy of Every Email You Send
Saving each outbound remittance advice creates a record proving what invoices you intended to pay and when you communicated that to the vendor. It is valuable when a vendor later claims a payment was never received, was applied to the wrong invoice, or does not match their records. Delivery receipts or automated logs from your email system document that the notification was actually transmitted.
How Long to Keep Remittance Records
The IRS generally requires you to keep records supporting your tax return for three years from the date you filed. That period extends to six years if you underreport income by more than 25% of the gross income shown on your return, and to seven years if you claim a deduction for bad debt or worthless securities.5Internal Revenue Service. How Long Should I Keep Records Employment tax records, if you have employees, must be kept at least four years after the tax is due or paid, whichever is later.6Internal Revenue Service. Topic No. 305, Recordkeeping
Many businesses default to a seven-year retention policy for all financial records, remittance advice included, because it covers the longest IRS scenario and is easier to administer than sorting documents into different buckets. Remittance emails are small digital files, and the cost of storing them longer than required is negligible compared to the cost of not having them when a dispute or audit surfaces years later.