ACH Transfer

An ACH transfer is an electronic movement of funds between U.S. bank accounts through the Automated Clearing House network, governed by Nacha and processed in scheduled batches. It supports both ACH credits (funds pushed by the sender) and ACH debits (funds pulled from the payer), covering payroll direct deposit, bill pay, and B2B vendor payments.

How ACH Transfers Work

The originator submits a payment file to its bank, the Originating Depository Financial Institution (ODFI). That bank batches the transactions and routes them through one of two ACH network operators: FedACH, run by the Federal Reserve, or EPN, the Electronic Payments Network operated by The Clearing House. The receiving bank, the RDFI, posts the funds to the recipient's account.

Standard settlement takes 1 to 3 business days. Same-Day ACH runs through three Nacha-mandated processing windows per business day and is increasingly common for time-sensitive vendor payments.

The Same-Day ACH per-transaction cap is currently $1 million. Nacha membership approved an increase to $10 million, effective September 17, 2027.

ACH Transfer vs. Wire Transfer

Processing: ACH groups transactions into batches on a schedule. Wires move funds individually, in real time.

Speed: standard ACH settles in 1 to 3 business days, and Same-Day ACH within the same business day. Domestic wires typically clear same day or next day.

Cost: ACH carries low or no fees for the sender. Wires typically cost $15 to $50 per transaction.

Reversibility: ACH transactions can be returned under Nacha rules, generally within 2 business days, and unauthorized consumer debits carry a 60-day return window. Wires are nearly irrevocable once sent.

Benefits of ACH Transfers

Lower transaction cost: ACH is cheaper to send than both paper checks and wires.

Predictable settlement: payments clear on a known schedule rather than whenever a mailed check gets processed, which makes cash-flow planning easier.

Less manual work: scheduling a batch file replaces cutting, signing, and mailing individual checks.

A digital audit trail: every transaction generates a record finance teams can pull at month-end or during a review.

One caveat for AR: with ACH, the funds and the remittance advice often arrive through separate channels, so cash application still needs the detail matched back to open invoices.

ACH Transfers and Your ERP

AP teams on Microsoft Dynamics GP, Business Central, D365 Finance and Operations, or Acumatica can initiate and reconcile ACH payment runs from inside their ERP environment.

MetaViewer brings those capabilities together for businesses running Microsoft Dynamics or Acumatica, keeping payment records and invoice documentation linked in one place. AP staff are not reconciling across separate systems or re-entering information by hand.