A “Reverse ACH WEB Single” line on your bank statement is your bank’s way of telling you that a one-time electronic payment was pulled out of your account through the ACH network, based on an authorization you gave on a website or in a mobile app. Nothing recurring, nothing card-based: you entered your routing and account number somewhere online, approved a single charge, and this is that charge posting.
Each word in the label describes a different piece of the transaction. Once you can read them, the entry stops looking cryptic.
What Each Word in the Label Means
Reverse is the bank’s flag that money left your account rather than arriving in it. Some banks also use “Reverse” when a prior ACH credit is being clawed back by the sender to fix an error, so if the dollar amount matches a recent deposit, the entry may be a correction of that earlier credit rather than a brand-new charge.
ACH identifies the network. The Automated Clearing House is the electronic system that moves money between U.S. bank accounts in batches, handling direct deposits, online bill payments, and similar transfers.
WEB is a Standard Entry Class code assigned by whoever originated the payment. It means the authorization was collected through a website or mobile app, as opposed to over the phone (which would be coded TEL) or on paper. If the statement shows WEB but you remember authorizing the payment verbally over the phone, that mismatch is worth raising with your bank, because the code affects how the transaction is handled and disputed.
Single tells you the authorization was for a one-off payment rather than a recurring draft. Recurring WEB payments carry a different payment type code in the underlying file, so “Single” confirms the merchant processed your approval as a standalone event. If you thought you were setting up automatic monthly payments and the entry reads “Single,” the recurring arrangement likely was not actually established, and you’ll want to set it up separately.
Common Reasons This Entry Shows Up
The usual trigger is a one-time payment made through a company’s own website or app using your bank account rather than a card. A few of the most common situations:
- Paying a gas, electric, water, or other utility bill through the provider’s online portal using the “pay by bank” or “e-check” option.
- Making a one-time extra payment toward a student loan, auto loan, or credit card through the lender’s dashboard.
- Choosing a direct bank transfer at online checkout instead of paying by card, sometimes labeled “pay with your bank account.”
- Funding a brokerage or retirement account with a one-time transfer from your bank.
- Sending money through a peer-to-peer app that pulls funds directly from your bank account.
- Making a one-time federal or state tax payment through an authorized e-pay portal.
In every one of these, the “Single” tag means you approved that payment and that payment only. A new one requires a new authorization.
Figuring Out Who Charged You
The Reverse ACH WEB Single wording is just the label. The useful identifiers sit next to it. Most banks display a shortened version of the originator’s legal or brand name, and often a ten-digit Company Identification number assigned to that originator by its own bank.
ACH files can also carry an optional 80-character addenda field where the originator tucks in extra details like an invoice number, account reference, or short description. Whether you see that depends on your bank and on how you’re looking at the account, so the paper statement, the mobile app, and the online banking view can each show different levels of detail.
If the on-screen name still doesn’t jog your memory, two moves usually work: search your email for payment confirmations matching the dollar amount and date, or call the company shown in the descriptor and ask what the charge is for.
Why the Timing May Not Match When You Paid
ACH payments don’t move instantly the way a wire does. The network processes transactions in batches throughout the business day and settles at scheduled intervals, and nothing settles on weekends or federal holidays. That means a payment you approved on Friday evening may not actually post to your account until Monday or Tuesday.
Most standard ACH debits settle the next business day after the file is submitted. Same-day settlement is available for transactions up to $1,000,000 if the originator submits the file before the final same-day deadline of 4:45 p.m. Eastern Time, and WEB Single entries are eligible for same-day processing on the same terms. So the date next to the entry is the posting date, not necessarily the date you clicked “pay.”
A Note on “Reverse ACH” Versus an ACH Reversal
These sound alike and aren’t the same thing. “Reverse ACH” on your statement is your bank’s label for an outgoing debit. An “ACH reversal,” by contrast, is a specific correction process under the Nacha Operating Rules that an originator uses to undo a duplicate payment, a wrong amount, a wrong account, or a mistimed entry. If the company description field on an entry says “REVERSAL,” that’s usually a company fixing a prior error, and a matching credit should appear on your statement. If there’s no matching credit, call your bank.
If You Didn’t Authorize the Charge
If a Reverse ACH WEB Single entry shows up and you don’t recognize it, federal law gives you dispute rights under the Electronic Fund Transfer Act and Regulation E. How much you’re on the hook for depends on how quickly you report it.
- Report within two business days of learning about the unauthorized transfer, and your liability is capped at $50.
- Miss the two-day window but report within 60 days of the statement date, and liability can rise to $500.
- Wait longer than 60 days, and you face unlimited liability for any unauthorized transfers that occur between the end of that 60-day window and the date you finally notify the bank. The bank has no obligation to reimburse those later charges.
Once you report, the bank has 10 business days to decide whether an error occurred. It can take up to 45 days instead, but only if it provisionally credits your account for the disputed amount within those first 10 business days so you have access to the money while the investigation continues.
During the investigation, the bank contacts the originating company to check whether a valid authorization exists for the WEB Single entry. When a consumer disputes a WEB debit as unauthorized, the return runs under reason code R10. Be straight with your bank: the Written Statement of Unauthorized Debit form carries a warning that intentionally misrepresenting whether a transaction was authorized can draw fines up to $1,000,000, imprisonment up to 30 years, or both under federal bank fraud law.
To file, contact your bank as soon as you spot the charge, by phone, in person, or through secure messaging. Give the transaction date, dollar amount, and any identifying details from the descriptor. Keep a copy of everything, and complete the Written Statement of Unauthorized Debit if the bank asks for one.
Stopping Future Debits From the Same Company
Because the entry is a “Single,” there isn’t a recurring authorization to cancel. But if you’re worried the same originator will try again, you have two tools.
Under Regulation E, you can place a stop payment order on a preauthorized electronic transfer by notifying your bank at least three business days before the scheduled payment date. You can give notice by phone, in person, or in writing. If you call it in, the bank can require written confirmation within 14 days, and the oral order expires after 14 days if that written follow-up never arrives. Banks commonly charge a fee for stop payment orders, and the amount varies, so check your account agreement.
Separately, ask your bank about placing a block on the specific originator. The Company Identification number from the original transaction descriptor is the identifier the bank will use to screen out future attempts from that company.