An electronic check works by pulling the routing and account numbers off a paper check, or collecting them directly from you online or by phone, and moving the money between bank accounts through the Automated Clearing House network. The transaction is governed by the Electronic Fund Transfer Act, and if someone uses your account without permission, your liability is capped at $50 as long as you notify your bank within two business days of learning about it.
What an Electronic Check Actually Is
It’s the same payment information a paper check carries, moved as data instead of paper. Three pieces have to line up. The nine-digit routing number identifies your bank or credit union.1American Bankers Association. ABA Routing Number The account number identifies your specific account inside that institution. And your name on the account has to match, so the receiving bank can verify the pairing.
The third requirement is authorization. For a recurring transfer, the law requires written authorization, and you’re entitled to a copy.2Office of the Law Revision Counsel. 15 USC 1693e – Preauthorized Transfers For a one-time payment, authorization can be a recorded verbal agreement on a phone call or a click-through on a website.3Nacha. Importance of Compliant ACH Authorizations Without one of those forms of consent, the payment cannot legally go through.
How the Payment Moves and When It Settles
The merchant or biller sends the transaction to its own bank, called the Originating Depository Financial Institution. That bank batches transactions together and sends the batch to an ACH operator. The operator sorts entries by routing number and delivers each one to the Receiving Depository Financial Institution, which posts it to the recipient’s account on settlement day.4National Credit Union Administration. Automated Clearing House – Examiners Guide
Standard ACH entries settle at 8:30 a.m. Eastern Time on the next business day.5Federal Reserve Financial Services. FedACH Processing Schedule Same-day ACH, which handles individual payments up to $1 million, settles three times a day and can complete in hours.6Nacha. Same Day ACH
If something’s wrong, the receiving bank sends back a return code. The usual reasons are insufficient funds, a closed account, or a name that doesn’t match the account number. The merchant will typically come back to you for corrected details or a different payment method.
The Channel You Pay Through Changes the Rules
Nacha, which governs the ACH network, assigns a standard entry class code to every transaction based on how it originated. Each code carries its own authorization and fraud-prevention rules.7Nacha. ACH File Details The four you’re most likely to encounter:
- ARC, or Accounts Receivable Conversion, is a paper check you mailed in that the biller converts into an electronic entry and then destroys.
- POP, or Point-of-Purchase, is a paper check scanned at a cash register. The cashier voids the check and hands it back to you.
- WEB is an internet-initiated payment. For WEB debits, originators are required to validate your account number before the first use as part of a fraud detection system.8Nacha. Supplementing Fraud Detection Standards for WEB Debits
- TEL is a phone-initiated payment authorized during a recorded call.
Scanned Paper Check: Two Different Legal Paths
When a bank photographs your paper check and clears the digital image, that’s Check 21 processing. The image can produce a “substitute check” that carries the same legal status as the original, as long as it reproduces the front and back accurately and includes the required legend.9Office of the Law Revision Counsel. 12 USC 5003 – General Provisions Governing Substitute Checks The payment is still a check and stays under check law.
ACH conversion is a different animal. When a merchant uses your paper check only as a source of account data to create an electronic fund transfer, the transaction leaves the check system entirely and falls under electronic fund transfer rules.10Federal Reserve Board. Frequently Asked Questions about Check 21 Your liability limits and dispute procedures are different on each path. A merchant that plans to convert your check has to tell you.
Your Liability if Someone Uses Your Account Without Permission
The Electronic Fund Transfer Act, and its implementing Regulation E, defines an unauthorized transfer as one made by someone without authority that gave you no benefit.11eCFR. 12 CFR 1005.2 – Definitions How much you can lose depends on how quickly you report it.
- Report within 2 business days of learning about the loss or theft, and your liability is capped at $50, or the amount of unauthorized transfers before you notified the bank, whichever is less.12eCFR. 12 CFR 1005.6 – Liability of Consumer for Unauthorized Transfers
- Report after 2 business days but within 60 days of the statement showing the transfer, and your liability can climb to $500.12eCFR. 12 CFR 1005.6 – Liability of Consumer for Unauthorized Transfers
- Miss the 60-day window entirely, and you can be held responsible for the full amount of any unauthorized transfers that occur after that window closes, with no cap.13Office of the Law Revision Counsel. 15 USC 1693g – Consumer Liability
Extenuating circumstances like hospitalization or extended travel can extend these deadlines to a “reasonable time,” but that’s a soft standard you shouldn’t plan around. Read your statements.
Disputing an Error
Once you tell your bank about an error, it has 10 business days to investigate and report back.14Office of the Law Revision Counsel. 15 USC 1693f – Error Resolution The bank can instead provisionally credit your account for the disputed amount within those 10 days and take up to 45 days to finish the investigation. You have full use of the provisional funds during that time.
One catch worth knowing: if you report the error verbally and your bank asks for written confirmation, you generally have 10 business days to send it. Miss that follow-up and the bank isn’t required to give you a provisional credit.14Office of the Law Revision Counsel. 15 USC 1693f – Error Resolution If you call, put it in writing the same day.
Stopping a Recurring Payment
You can cancel a preauthorized electronic payment by notifying your bank at least three business days before the next scheduled transfer. The notice can be oral or written.2Office of the Law Revision Counsel. 15 USC 1693e – Preauthorized Transfers If you call it in, the bank can require written confirmation within 14 days, and if you don’t send it, the oral stop-payment order expires after 14 days.15eCFR. 12 CFR 1005.10 – Preauthorized Transfers The bank has to tell you about the written-confirmation requirement and where to send it when you make the oral request.
Business Accounts Are Not Covered
Everything above applies to consumer accounts, meaning accounts used mainly for personal, family, or household purposes. Regulation E does not extend to business accounts.11eCFR. 12 CFR 1005.2 – Definitions For business electronic transfers, UCC Article 4A applies instead. It requires the customer to use ordinary care in reviewing account activity and to notify the bank of any unauthorized payment within a reasonable period not exceeding 90 days.16Legal Information Institute. UCC Article 4A – Funds Transfer Missing the 90-day window doesn’t automatically kill the claim, but it forfeits any interest on a refunded amount. Businesses carry more of the risk on their own.