ACH Transfer

An ACH transfer is an electronic payment that moves between accounts at American financial institutions over the Automated Clearing House network, in batches, on a scheduled settlement cycle rather than one at a time. Payroll, Social Security and other benefit payments, tax refunds, mortgage and utility auto-pay, subscription billing, and most transfers between a person's own accounts at different institutions all run on it.

The name is worth a sentence, because the phrase people search is not the phrase the network uses. Nacha, the association that governs the ACH Network, describes the two consumer-facing forms as Direct Deposits and Direct Payments, and lists "direct debit, EFT, electronic bank transfer and eCheck" as the other names in circulation. "ACH transfer" is a serviceable consumer coinage for the whole category, and no issuing body defines it, which is why descriptions of it vary so much.

The structural fact underneath everything else is direction. A credit entry is pushed by the payer, which is what a paycheck or a benefit payment is. A debit entry is pulled by the payee under an authorization you gave them earlier, which is what an auto-pay is. The same network, the same settlement cycle, and two completely different sets of consequences when something goes wrong, because the person who can start a transfer is rarely the person who wants to stop it.

The ACH rulebook is private, and this is not a technicality. Nacha is a membership association, not an agency, and the Nacha Operating Rules bind the financial institutions and payment processors that participate in the network rather than binding you. Two ACH Operators move the entries between institutions. What that means practically is that a great deal of what people describe as "the ACH rules" is contractual: return timeframes, warranties between institutions, and the codes used to reject an entry are rulebook matters. Federal consumer law sits above all of it, and where the two speak to the same question, the federal rule is the one you can enforce.

The debit direction is where the consumer has a real remedy. Because a debit entry is initiated by someone else against your account, Regulation E gives you a route that does not depend on their cooperation: 12 CFR 1005.10(c)(1) lets you stop payment of a preauthorized electronic fund transfer by notifying your own financial institution, orally or in writing, at least three business days before the scheduled date. That is the answer to a subscription that has become difficult to cancel. It comes with a catch that defeats people who use it: under 1005.10(c)(2) the institution may require written confirmation within 14 days, and an oral order "ceases to be binding after 14 days if the consumer fails to provide the required written confirmation." Stopping the payment also does nothing to the underlying contract or the debt behind it.

A related right nobody uses. Where a preauthorized debit will vary in amount from the last one under the same authorization, 12 CFR 1005.10(d)(1) requires the payee or the institution to send written notice of the amount and date at least 10 days before the transfer. The consumer may be given the option of receiving notice only when the amount falls outside a specified range. That is why a variable utility auto-pay generally arrives with a notice attached, and why the absence of one on a bill that jumped is worth a question.

Speed, and where the money actually is. Same Day ACH went live in 2016 and now carries a substantial share of the network's volume; Nacha states its per-payment limit as $1 million. Nacha also describes the Network as open "23¼ hours every business day", settling payments four times a day, with settlement tied to the Federal Reserve's settlement service, which is closed on weekends, federal holidays, and overnight. That is the reason a payment initiated Friday evening is a Monday event, and it is a property of the settlement calendar rather than of any one institution.

Why pay sometimes appears "early", and why it is not a right. Nacha's own explanation is that because payroll deposits are routine, "some banks and credit unions may advance their own funds to the employee before settlement actually occurs, resulting in early availability." The institution is lending against an entry it expects to settle. It is a product feature that can be changed or withdrawn, which matters if a bill is scheduled on the assumption that the money lands two days early.

What ACH is not. It is not a wire. A wire moves individually and in real time through a different system, costs meaningfully more, and is governed by state commercial law adopted from the Uniform Commercial Code rather than by Regulation E's subpart A consumer procedures. It is also not instant in the way a card authorization is: an ACH entry can be returned by the receiving institution days after it appears to have gone through, for insufficient funds, a closed account, or a claim that it was not authorized, which is why a merchant treating an ACH credit as final on the day it lands is taking a risk that a card network would not ask them to take.

Someone originates an entry through their bank, which submits it to an ACH Operator in a batch. The Operator sorts entries by receiving institution and delivers them, and the two institutions settle through the Federal Reserve on one of the day's settlement cycles. Your bank then credits or debits your account. Nothing about the process is visible to you except the result, which is why the timing feels arbitrary until you know that settlement runs on business days.

A hypothetical example of the stop-payment right and the trap inside it. Marisol's gym collects $58 on the first of each month by preauthorized debit. She cancels her membership in March, and the debits keep coming.

On March 24 she calls her bank and orders it to stop the transfer scheduled for April 1. That is more than three business days before the scheduled date, so 12 CFR 1005.10(c)(1) requires the bank to stop it, and the April payment does not leave her account. She has saved $58 without the gym agreeing to anything.

The bank tells her it requires written confirmation of the order. She does not send it. Under 12 CFR 1005.10(c)(2) the oral order ceases to be binding 14 days later, on April 7, so when the gym presents the next entry on May 1 the bank pays it. She has stopped $58 and paid $58, and the only difference between the two months was a letter.

Two things that arithmetic does not show. Stopping the payment did not cancel the membership contract, so the gym may still claim the money and may report a delinquency. And the right runs against her own bank rather than the gym, which is exactly what makes it useful and exactly why the written confirmation is worth sending.

Pros

• Cheap or free for consumers at most institutions, and far cheaper than a wire for a payment of any size.
• An electronic fund transfer under Regulation E, so the federal error-resolution procedure and the liability limits for unauthorized transfers apply to it.
• A recurring debit can be stopped through your own bank, with no need for the payee to cooperate.
• Notice is required in advance when a recurring debit will vary in amount, which turns a variable auto-pay into something you can check.
• Same Day ACH exists for time-sensitive payments, at a per-payment limit Nacha states as $1 million.

Cons

• Settlement runs on business days, so a Friday evening instruction is a Monday event, and holidays extend that further.
• An entry can be returned days after it appears to have arrived, so money showing in an account is not the same as money that has settled.
• An oral stop-payment order lapses after 14 days without the written confirmation the bank can require, and the next debit then goes through.
• Stopping a payment does not cancel the contract or the debt behind it.
• Authorizing a debit hands a company a standing instruction against your account, and revoking it with that company is a separate step from stopping it at the bank.