What is an ACH transfer? How US bank payments move

By SendPay Business · · 2 min read

What is an ACH transfer? How US bank payments move

An ACH transfer is a payment between US bank accounts sent over the Automated Clearing House network. It is how most US wages, benefits, bills and account-to-account transfers are paid.

Who runs itHow an ACH payment worksACH vs wire vs FedNow

Who runs it

The ACH network is governed by Nacha, and payments are processed by the Federal Reserve and The Clearing House. Banks send payments in batches, which is why ACH is cheap but not always instant.

How an ACH payment works

  1. The payer or payee's bank creates the payment with the other account's routing and account numbers.
  2. The bank sends it to an ACH operator in a batch.
  3. The operator sorts the batch and passes each payment to the receiving bank.
  4. The receiving bank credits the account, often the same day or the next business day.

ACH vs wire vs FedNow

ACH is low cost and good for regular payments such as payroll. Wire transfers are faster and final but usually cost more. FedNow and other instant payment services settle within seconds, at any time of day.

Where SendPay fits

In the US, SendPay platforms cover card payments only. Outside the US, SendPay platforms offer GBP, EUR and USD accounts, transfers, cards and payment links, powered by licensed partners.

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Questions people ask

Is a routing number typed correctly?

Check its nine digits and check digit.

Routing number checker →
How do I compare transfer costs?

Add the fee and any exchange rate mark-up in the free calculator.

Money transfer cost calculator →
What is a wire transfer?

How wire payments differ from ACH.

Wire transfers →
What is FedNow?

The US Federal Reserve's instant payment service.

FedNow →
Can I launch my own payments app?

Yes, with a branded platform powered by licensed partners.

See platforms →

Read next

This guide is general information, not legal or financial advice. SendPay Business is a technology company, not a bank, and does not take deposits; regulated services on the platforms are provided by licensed partners. PayPal, Patreon and Substack are named as reference points only and are not affiliated with SendPay Business.