What is ACH Transfer?

An ACH (Automated Clearing House) transfer is an electronic payment that moves funds between bank accounts through a nationwide batch-processing network operated by the Federal Reserve and the private-sector Electronic Payments Network. Governed by Nacha (formerly the National Automated Clearing House Association), the ACH network processes two types of transactions: ACH credits (where the originator pushes funds to the recipient, e.g., payroll direct deposit, tax refunds, government benefits) and ACH debits (where the originator pulls funds from the recipient's account with authorization, e.g., recurring bill payments, mortgage autopay, consumer-to-business payments).

ACH transactions settle on a next-day or same-day schedule. Standard ACH entries submitted before an institution's cutoff time typically settle the next business day. Since 2016, Nacha has expanded same-day ACH capabilities, enabling credits and debits to settle within hours of submission. Same-day ACH is now available in multiple processing windows each business day and supports transaction values up to $1 million per entry (as of 2022).

Under the Electronic Fund Transfer Act (Regulation E), consumers have the right to stop payment on a preauthorized ACH debit and to dispute unauthorized or erroneous ACH entries within 60 days of the statement date. The CFPB's Regulation E also requires that financial institutions investigate and resolve reported errors within specified timeframes, generally 10 business days, with provisional credit for unresolved disputes. ACH transfers have largely replaced paper checks for recurring payments due to their low per-transaction cost and reduced error and fraud rates compared with paper instruments.

For both consumers and business entities, the primary appeal of ACH transfers is their cost efficiency. While wire transfers carry steep fees, standard ACH transactions are typically free for consumers and cost businesses only pennies per transaction. However, because ACH processing relies on manual entry of bank routing numbers and account numbers, clerical input errors can lead to transaction rejection or routing delays. In the modern payments ecosystem, the ACH network coexists with newer instant payment systems, such as the Clearing House's Real-Time Payments (RTP) network and the Federal Reserve's FedNow service. While ACH remains the primary pipeline for high-volume corporate payroll and utility bills, instant payment rails are increasingly adopted for gig-economy payouts and peer-to-peer transfers requiring immediate finality.