Account-to-account (A2A) payments: How they work and when to use them
October 5, 2026
Account-to-account (A2A) payments move money directly from one bank account to another, with no card network in between. In the US, they commonly run over ACH or instant rails such as Real-Time Payments (RTP) and FedNow. The method affects the costs, timing, and options for resolving a disputed payment.
Finix is a direct payment processor that supports card payments, bank payments, and payouts on one platform. For card transactions, it shows interchange fees and its markup as separate line items.
An account-to-account payment transfers money straight from your customer's bank account into yours. In the US, these payments use the same rails that already carry payroll, rent, and vendor invoices.
Bank payments skip the card interchange, though their total cost depends on the provider and payment method. However, unlike card payments, a standard ACH payment settles in batches over a day or more, and it can come back for insufficient funds after you've already shipped.
So, the right choice depends on the transaction. On a large invoice, the fee savings may justify the wait. On a smaller order, speed and payment certainty may matter more. In this guide, you'll learn how A2A payments work, how bank payments compare with card payments on fees and dispute rights, and what you need to start accepting them.
What is an account-to-account (A2A) payment?
An account-to-account payment is a transfer of funds from a payer's bank account directly into a payee's bank account. The payer's bank sends the money, the payee's bank receives it, and the funds clear over a rail such as ACH, RTP, or FedNow.
These transfers move in one of two directions known as push and pull payments.
In a push payment, the person paying starts the transaction and sends money out of their own account. For example, an employer paying a contractor from their business banking app. In a pull payment, the business collecting starts the transaction and draws the funds under an authorization the customer has given. This is what typically happens when a gym charges a member for their monthly membership.
A2A has a long history. People have used it for years to move money between their own accounts, pay bills, and pay each other through apps built on bank rails.
Pay by bank at physical points of sale is a different use case. Kansas City Fed research notes it has yet to become available at US points of sale yet, where credit and debit cards accounted for 75% of transactions in 2025.
Is pay by bank the same as an A2A payment?
Pay by bank is a type of A2A payment. Pay by bank is the customer-facing name for an A2A payment at checkout. When your customer sees "Pay by bank" next to the card fields, they're being given the option to transfer funds straight from their bank account into yours. A2A also covers transfers outside checkout, including payouts.
A2A is the term used in the payments industry when speaking about how the money moves and which rail carries it. Retailers and banks say pay by bank when they're addressing the person paying, because it tells them what to do. When discussing retail paments, Federal Reserve uses “pay by bank,” “A2A,” and “bank-based payment” interchangeably.
At checkout, "account-to-account payment" reads as jargon to a shopper. US businesses offering this option should label it pay by bank, or name the customer's own bank once they select it.
How do A2A payments work?
Every account-to-account payment does the same job. It moves money from one bank account to another and settles between the two banks. The payment rail affects settlement speed and return risk; open banking describes how a customer connects an account and authorizes a payment.
ACH-based A2A payments
Automated Clearing House (ACH) is the workhorse rail behind most bank payments in the US. It's the one your business already uses for payroll and vendor invoices. Payments queue up and process in scheduled batches through the business day, meaning a Friday afternoon transaction may not start moving until Monday.
Standard ACH timing runs one to a few business days. Same-day ACH settles within the same business day when the payment clears its bank's cutoff window. Nacha recently reported 1.4 billion same-day ACH payments in 2025.
Real-time A2A payments (RTP and FedNow)
RTP and FedNow payments settle in seconds, around the clock, every day of the year. RTP has run since 2017 under The Clearing House, which is owned by a group of large banks. FedNow launched in July 2023 and is operated by the Federal Reserve.
Both options confirm when a payment has completed, so you aren’t waiting days to learn that it failed. However, they’re limited by coverage. FedNow reached 1,725 participating institutions in the first quarter of 2026, which is less than a fifth of US banks and credit unions.
Open banking-enabled A2A payments
Open banking can let a customer connect their bank account and authorize a payment through a third-party service. The payment itself still runs over a rail such as ACH or an instant rail. Depending on the service, the customer may sign in with their bank to approve the payment.
These payment flows are established in the UK and parts of Europe. In the US, they’re still developing. The Consumer Financial Protection Bureau (CFPB) finalized a rule on access to consumer financial data in October 2024, but a federal court paused its implementation while the agency reconsiders the rule, and the replacement is still in progress.
How is an A2A payment different from a card payment?
An A2A payment differs from a card payment in how the money travels. The route determines what you pay and what recourse each side has. A card payment runs through a network that authorizes the transaction, moves it between the issuing and acquiring banks, and charges an interchange fee along the way. An A2A payment goes bank to bank, with no card interchange or card network chargeback process.
| A2A payment | Card payment |
|---|---|---|
Settlement rail | ACH, RTP, or FedNow | Visa, Mastercard, Amex, or Discover |
Typical cost | Typically a fixed per-transaction fee, although pricing varies by provider and payment method | Percentage of the sale plus a fixed fee, driven by interchange |
Dispute and chargeback rights | No card network chargeback process;, ACH return rights and consumer protections may apply depending on the payment | Formal chargeback rights set by network rules, with defined windows and evidence requirements |
Typical speed | Seconds on RTP and FedNow. One to a few business days on standard ACH | Authorization in seconds. Funds in your account in one to two business days |
What are A2A payments used for?
A2A payments are used where card fees are large enough to notice or where the payment repeats on a schedule. In the US today, that includes:
Recurring bill payments: Utilities, rent, insurance, and healthcare bills run as pull payments on ACH debits. The customer provides authorization for the recurring payment, and the biller avoids relying on a card that may expire or be replaced.
High-ticket ecommerce: Furniture, appliances, equipment, and travel carry totals where a percentage-based card fee may cost more than a bank payment fee.
B2B invoice payments: Suppliers and vendors have settled invoices by ACH for decades, and it remains a common option. Card acceptance on a five-figure invoice can be expensive for the seller.
Marketplace and platform payouts: Sellers, contractors, and drivers can be paid through ACH credit pushes. Amounts vary and volume can be high.
One way US businesses can encourage adoption is by sharing some of the savings with customers. A merchant may offer a discount or loyalty points for paying by bank instead of by card, giving the customer a reason to choose the less familiar option.
What are the advantages and trade-offs of A2A payments?
A2A payments can cost less than card payments, but the trade-offs vary depending on the payment rail. Estimates put the savings against credit cards between 40% and 85%, though the Federal Reserve cautions that figures like these deserve care, since setup, processing, and receiving-bank fees still apply.
Where A2A payments may have the advantage:
Lower acceptance cost: A2A payments don’t incur card interchange, although the total cost depends on the provider, payment method, and pricing model.
No card details exchanged: Removing card data from the transaction reduces exposure to card-number theft, although businesses must still protect any bank account information they collect.
Immediate confirmation on instant rails: RTP and FedNow provide final settlement and payment confirmation within seconds.
More detailed payment data: Some A2A rails can carry reference information that supports reconciliation, although the practical benefit depends on the provider and integration.
What you may give up compared with cards:
Late returns: A standard ACH payment can be returned after you’ve fulfilled an order, including because of insufficient funds. Unoauthorized consumer debits may be returned over a longer period.
No card network chargeback process: ACH returns and consumer protections may still apply, depending on the payment and reasons for the dispute.
Separate refund flow: Refunding an A2A payment may require an outbound payment that you originate and track separately.
Lower customer familiarity: Shoppers know how to use a card, whereas a bank payment option may ask them to follow a less familiar checkout process.
What should a business check before accepting A2A payments?
Before accepting A2A payments, confirm with the processor how authorization, account verification, returns, settlement, reconciliation, and refunds work. Put these questions to any provider before you turn the option on:
Return handling: Ask how you find out a payment has been returned, how quickly that notification reaches you, and how the returned funds are recovered.
Authorization requirements: Ask what the customer must agree to before you can debit their account, and where that authorization is stored if you need to produce it later.
Settlement timing: Ask which rails the provider supports, what the standard funding window looks like, and when a payment is considered final.
Reconciliation: Ask how bank payments appear in your reporting alongside card transactions and whether both land in one settlement view or arrive separately.
Refund mechanics: Ask how a refund is initiated, how long it takes to reach the customer, and what it costs.
Set a policy outlining which transactions you’ll offer bank payment before you launch, rather than deciding case by case. A common starting point is to offer A2A on invoices and higher-value orders where the potential fee savings are greatest, while keeping cards as the default elsewhere. Recurring billing is another natural fit, because one authorization can cover a series of scheduled payments.
How Finix helps with A2A and card payments
Finix is a direct payment processor that supports bank payments and card payments on one platform. On the card side, Finix connects directly to Visa, Mastercard, Amex, and Discover, and every transaction shows the interchange cost and the Finix markup as separate line items. On the bank side, you can accept ACH debits from customers and send ACH payouts at a flat $0.25 per payout instead of a percentage of the amount.
Running both through Finix gives you one integration, a united platform for payments and payouts, and one support team to call when something goes wrong. Finix validates bank accounts before an ACH payment goes through, lets you set how long funds are held before payout so returns land inside your window, and puts bank and card activity in the same reporting dashboard.
Cost structure and rail coverage both depend on your volume, ticket size, and how your customers prefer to pay. Talk to a Finix payments expert today about which payments mix is best for your business.