Acquiring Bank vs Issuing Bank: What’s the Difference?

When a customer pays, two financial institutions sit on opposite sides of the transaction. One supports the business receiving the payment, while the other supports the customer making it.

The acquiring bank, or acquirer, works on the merchant’s side. It receives the card transaction and helps arrange payment to the merchant. The issuing bank, or issuer, provides the customer’s card and usually decides whether the transaction should be approved.

This is the simple answer but the distinction becomes more useful when you need to understand declined payments, settlement, interchange fees or chargebacks. This guide explains the difference between an acquiring bank and an issuing bank, what each one does, how they connect, and where the acquirer sits in the process.

Acquiring Bank vs Issuing Bank

An acquiring bank accepts card transactions on behalf of a merchant. An issuing bank provides cards to customers and maintains the accounts connected to those cards.

Here is the difference between an acquiring bank and an issuing bank:

Aspect	Acquiring Bank	Issuing Bank
Who it serves	The merchant accepting the card	The customer using the card
Main responsibility	Accepts and routes card transactions for the merchant	Issues the card and manages the cardholder’s account
Role in authorisation	Sends the authorisation request towards the issuer	Usually approves or declines the request
Role in settlement	Receives settlement funds and arranges payment to the merchant	Provides the transaction funds through the card system
Primary risk	Merchant, fraud, operational and chargeback exposure	Cardholder credit, account and fraud risk
How it earns money	Acquiring and merchant-service charges	Interest, account charges and interchange, depending on the product
Also called	Acquirer or merchant acquirer	Issuer or card issuer

What Is An Acquiring Bank?

An acquiring bank, or acquirer, is the regulated financial institution that works for the merchant. It accepts card payments on the business’s behalf, holds the merchant relationship, and settles the funds into the business’s account. When you take a card payment, When you take a card payment, your acquirer is the one that receives the approved money and pays it out to you.

An acquirer usually performs or oversees the following work:

• Onboarding the merchant and assessing its business, ownership and risk
• Providing or supporting the merchant account used for settlement
• Submitting authorisation requests through the relevant card scheme
• Receiving transaction information for clearing and settlement
• Arranging payment of the merchant’s proceeds after agreed charges or adjustments
• Managing merchant-related fraud, disputes and chargeback exposure
• Monitoring compliance with its contract and the card-scheme rules

A business does not always contract with its acquirer directly. It may instead use a payment service provider that combines acquiring, processing, gateway and merchant-account services under one agreement.

For example, suppose a customer enters their card details on a retailer’s website. The retailer’s gateway securely captures the payment information, and its processor passes the request to the acquirer. The acquirer then submits that request to the relevant card scheme so that it can reach the issuer.

An acquirer is therefore more than the merchant’s ordinary business bank. A company can receive card settlements into a current account held at one bank while its acquiring service is provided by another organisation.

What is An Issuing Bank?

An issuing bank is the institution that provides a debit, credit or prepaid card to the customer. approves or declines each payment based on available funds and risk. When a payment is approved, the issuing bank releases the money to the acquirer through the card scheme.

The issuer maintains the cardholder relationship and usually:

• Issues the physical or virtual card
• Connects the card to a current, credit or prepaid account
• Checks the account and card when an authorisation request arrives
• Approves or declines transactions
• Places holds or records completed payments against the account
• Sends statements and collects credit-card repayments
• Provides fraud controls and cardholder support
• Handles disputes raised by the cardholder

For example, if a customer uses a debit card to make a £100 purchase, the issuer checks whether the card is valid, whether sufficient funds are available and whether its fraud controls allow the transaction. It then returns an approval or decline response through the card network.

How this connects to card fees

The acquiring and issuing banks also sit on opposite sides of the interchange fee. The acquirer pays interchange to the issuer when a card transaction is processed.

The merchant does not usually pay the issuer directly. Instead, interchange forms part of the total card-processing charge paid to the merchant’s provider. That charge may include:

• Interchange paid to the issuing bank
• Scheme fees paid for using the card network
• Acquiring and processing charges
• Gateway or other service fees

Card schemes do not receive the interchange fee. They charge separate scheme fees for the use of their networks and services. The full breakdown is in interchange fees explained, and the engine that moves the payment between the two is covered in what is a payment processor.

Where Atoa Fits

A merchant does not choose the issuing bank; that relationship belongs to the customer. What the merchant chooses is the payment provider that connects its checkout or point of sale to the acquiring side of the card system.

Atoa manages this merchant-facing part of the payment journey. Businesses can use the platform to accept card payments without dealing separately with each organisation involved in authorisation and settlement. The customer’s bank still acts as the issuer, while Atoa’s card-payment partner, Rapyd Payments Limited(FRN 900688), provides the underlying card services.

Businesses can also accept Pay by Bank through Atoa. These payments use account-to-account infrastructure rather than the card scheme connecting an acquirer and issuer, so card interchange and scheme fees do not apply.

Frequently Asked Questions

What is the difference between an acquiring bank and an issuing bank?

The acquiring bank works for the merchant, accepting card payments and settling the funds to the business. The issuing bank works for the cardholder, issuing the card and paying the acquirer for approved payments. They are the two banks on either side of a card transaction.

Which bank charges interchange?

The acquiring bank pays interchange to the issuing bank on each card transaction, so the issuer earns it. The card schemes set the rate, and it usually forms the largest part of a merchant’s card fee. No provider can discount interchange itself.

Why was my card payment declined?

The decline usually comes from the issuing bank, after it checks the card, available funds and its fraud controls. A payment can also fail earlier at the merchant, gateway, processor or acquirer, so check your provider’s response codes before assuming the issuer stopped it.

Does Pay by Bank use an acquiring and issuing bank?

No. Pay by Bank is account-to-account through open banking, so there is no card acquirer or issuer split. The money moves directly between the customer’s bank and yours, settling in 3 to 6 seconds with no card-style chargebacks.

See how Atoa’s merchant services handle card and Pay by Bank on one platform, or book a demo.

Sources

Atoa Payments Limited is authorised by the Financial Conduct Authority as an Authorised Payment Institution to provide account information services and payment initiation services (FRN 1007647); card services are provided by Rapyd Payments Limited (FRN 900688).

• Payment Systems Regulator: interchange and the roles of acquirer and issuer
• Atoa: Pay by Bank
• Help Centre: Rapyd’s role in card payments