What Is an Acquirer in Payments (and How It Differs From Issuer)

An acquirer is a financial institution that enables businesses to accept card payments. 

If your business accepts card payments – whether in-store, through a POS device, or via a website – you are already working with an acquirer. 

But what does this term refer to in detail, and how does it differ from an issuer?

In the following sections, we dive deep into what an acquirer is, explaining everything you need to know.

What Is An Acquirer In Payments  

An acquirer, also referred to as an acquiring bank or merchant acquirer, is a licensed financial institution that enables businesses to accept card payments from customers. It does this by providing the merchant with a merchant account – a specialised account into which funds from card transactions are collected and settled.

Acquirers operate on behalf of merchants within the wider payment processing ecosystem. When a customer pays by card, the acquirer initiates the process of requesting and receiving those funds from the customer’s bank on the merchant’s behalf.

What Does An Acquirer Do For Businesses  

The acquirer’s role in payment processing is more than just holding a merchant account. 

Here is what an acquirer actively does for businesses:

• Processes card transactions – Every time a customer pays by card, the acquirer receives the transaction data from the merchant’s POS terminal or payment gateway and begins verifying and routing the transaction via a card network.
  
• Connects merchants to card schemes – Acquirers maintain direct relationships with the major card networks like Visa and Mastercard, allowing a merchant to accept payments from customers regardless of which card or issuing bank they use.
  
• Settles funds into merchant accounts – After a transaction is authorised and completed, the acquirer is responsible for the transaction settlement or transferring the funds from the card scheme into the merchant’s account. This typically happens after deducting applicable fees. 

One of the most important roles of acquirers is that they also carry out risk management, monitoring transactions for fraud, suspicious patterns, and chargebacks. 

Acquirer vs Issuer

Both acquirers and issuers are involved in every card payment. However, they are fundamentally different from one another. 

Here are the main differences between the two. 

The acquirer works on behalf of the merchant

The acquirer works on behalf of the business accepting the payment. 

It holds the merchant account, processes the card transaction through a payment network, and makes sure the funds are settled into the merchant’s account after a successful transaction.

The issuer is the customer’s bank

The issuer is the financial institution that provides the customer with their card. 

When a card is used, the issuer is responsible for checking whether the funds are available and approving or declining the transaction.

No direct communication between an acquirer and an issuer

Instead of directly communicating with one another, card schemes like Visa or Mastercard act as the intermediary. 

The acquirer sends the transaction request through the card scheme, which routes it to the correct issuer. The issuer responds with an approval or a decline, and that response travels back through the same chain.

How The Payment Process Works  

The merchant payment process usually follows a process that looks like this:

1. The customer presents their credit card, debit card, or digital wallet at the merchant’s POS device, and the communication process begins.
   
2. The cardholder’s details will be submitted via the merchant’s gateway to the acquiring bank, which will then request the payment from the card scheme, such as Visa or Mastercard.
   
3. The acquirer forwards the transaction request to the card scheme, such as Visa and Mastercard.
   
4. The card scheme will then contact the customer’s issuing bank to determine whether the funds are available in the customer’s account.
   
5. The transaction is then approved or declined, and this information is conveyed back to the card scheme, which communicates with the acquiring bank and notifies the merchant about the status.
   
6. The confirmation is sent back to the merchant, traveling back through the card scheme to the acquirer, which sends it to the merchant’s terminal or payment gateway.
   
7. The funds are settled to the merchant account.

Note that payment authorisation and settlement are two separate events. While the authorisation verifies that the card is valid and funds are available at that moment, the settlement phase is when the money actually moves. 

Key Players In A Card Payment  

Every card transaction involves several participants:

• Cardholder – The customer making the purchase using a credit card, debit card, or digital wallet.
  
• Merchant – The business accepting the payment, equipped with a POS terminal, card reader, or online payment gateway.
  
• Acquirer – The merchant’s financial institution. The acquirer processes the transaction, connects to the card network, and settles funds into the merchant account.
  
• Issuer – The cardholder’s bank or card provider. The issuer approves or declines the transaction based on available funds and fraud checks.
  
• Card schemes – The payment networks (Visa, Mastercard, and others) that set the rules for card acceptance, facilitate communication between acquirers and issuers, and oversee the integrity of the payment network as a whole.

These participants work together every time a card is used, forming the backbone of modern card acceptance infrastructure.

Types Of Acquirers And Payment Setups  

Not all acquirers operate in the same way. UK businesses have several options depending on their size, transaction volume, and specific needs.

Traditional acquiring banks

These are established banks and financial institutions that offer merchant accounts and acquiring services directly. 

They typically work best for larger businesses with high transaction volumes and the ability to negotiate bespoke pricing. The application process can be more involved, with stricter requirements and lengthier onboarding timelines.

Payment service providers (PSPs)

Payment service providers offer merchant services to businesses without requiring a merchant account in the traditional sense. Instead, multiple merchants share a pooled account managed by the PSP. 

This model is faster to set up and more accessible for smaller businesses and sole traders, though it can come with less pricing flexibility and higher per-transaction costs at scale.

Integrated payment platforms

Integrated payment platforms combine acquiring services with the broader technology stack a business needs, including POS terminals, payment gateways, business accounts, and reporting tools. 

They are popular with UK SMEs because they streamline credit card processing and transaction processing across both in-store and online channels. This reduces the complexity of working with multiple providers at the same time.

What To Look For When Choosing An Acquirer 

If you’re on the market, ready to accept payments, you’ll definitely want to sign up with a merchant acquirer. 

However, there are certain considerations you need to keep in mind before you sign on the dotted line.

Here are a few of these:

• Is the merchant acquirer PCI compliant?
  
• Do they offer a free, multi-currency merchant account?
  
• How will you pay for your payment acceptance needs? Will you pay a transaction rate for each transaction, or will there be a monthly fixed cost added in as well?
  
• How many currencies will you be able to accept at your business?
  
• Will you get an instant settlement and access to your received funds?
  
• Will you get access to 24/7 customer support?

All these are important considerations to keep in mind when you sign up with a merchant acquirer. 

Fees And Costs Of Using An Acquirer  

Using an acquirer is not free of charge.

Take into account the following costs that can impact your budget:

• Transaction fees – Typically a percentage of each transaction value, sometimes combined with a small fxied fee per transaction. Rates vary based on card type, card network, domestic or international payments, and whether the transaction is card-present.
  
• Monthly fees – Some acquirers charge a monthly account or service fee in addition to per-transaction costs for access to the payment gateway, reporting, or others.
  
• Chargeback fees – When a customer disputes a transaction, and a chargeback is raised, the acquirer usually charges an administration fee, which often spans between £10 and £25 per chargeback.
  
• Currency conversion costs – If you accept payments in other currencies, a currency conversion fee will typically apply in the form of a percentage above the interbank exchange rate.

It’s highly recommended to check the applicable acquirer rates before choosing a partner.

How Settlements and Payouts Work

Settlement is one of the most important aspects of the acquiring relationship, yet it is frequently misunderstood. 

As noted above, settlement is the actual movement of money. It’s how funds flow from the issuer, through the card scheme, to the acquirer, and into the merchant account. 

Settlement timelines can vary between acquirers, but traditional banks may take three to five business days. Some modern payment platforms now offer next-day or even same-day settlement, which is especially valuable for businesses with tight cash flow cycles.

Needless to say, for small businesses and sole traders, settlement time has a direct impact on working capital. For example, a company that processes hundreds of pounds in card transactions every day but takes five days to access the funds can experience a cash flow squeeze. 

Common Mistakes When Choosing An Acquirer  

When choosing an acquirer, we highly recommend avoiding the following common mistakes: 

• Prioritising cost – A provider with a marginally lower transaction rate but slower settlement, higher chargeback fees, or limited integration options may cost more in the long run than a slightly pricier alternative with better overall terms.
  
• Ignoring settlement speed – Businesses that do not check the settlement speed upfront can be surprised to find that their funds are locked up for several days, affecting their ability to pay suppliers, staff, or operating costs.
  
• Not checking integration compatibility – Before signing an agreement, confirm that the acquirer’s systems integrate properly with your POS hardware, ecommerce platform, accounting software, or any other payment gateway you rely on.
  
• Overlooking support and reliability – An acquirer that is difficult to reach when something goes wrong can cause serious disruption to your business.
  
• Underestimating the importance of risk management – Failing to disclose relevant information regarding the risk profile or each onboarded merchant can result in accounts being frozen or terminated at short notice.

Taking into account these frequent mistakes can help you deliver a disruption-free payment process for your customers. 

Acquirers And Payment Acceptance For UK Businesses  

For UK businesses, choosing the right acquiring setup is increasingly central to how smoothly the business operates, not just financially, but operationally.

Whether you run a physical shop, a mobile service business, or an ecommerce store, card acceptance in the UK is now a baseline requirement as 54% of shoppers say they prefer contactless payments. 

Your acquirer needs to support your specific environment with countertop POS terminals for fixed retail locations, portable card readers for tradespeople and market traders, and a reliable payment gateway for online businesses.

Multi-currency acceptance is also an important consideration for international customers. UK businesses serving tourists, international clients, or selling across borders need an acquirer capable of handling multiple currencies efficiently. 

For many UK SMEs, working with a single integrated provider that combines acquiring services, POS terminals, a business account, and a payment gateway simplifies the entire payment infrastructure. 

Platforms like myPOS, for example, offer acquiring services alongside POS hardware and real-time access to settled funds, enabling businesses to manage in-store and online card acceptance from a single, connected setup without the need to juggle multiple providers.

Conclusion  

Now that you know the meaning of the term acquirer, you’re one step closer to accepting seamless payments from your customers via their credit, debit, or even prepaid cards. 

As a result, you can satisfy your customers’ needs and expectations, remain competitive in any niche, and build trust and loyalty in the long term. 

Disclaimer: Please be aware that the contents of this article and the myPOS Blog, in general, should not be interpreted as legal, monetary, tax, or any other kind of professional advice. You should always seek to consult with a professional before taking action, since the particulars of your situation may materially differ from other cases.

Frequently Asked Questions

How do I know which acquirer is actually processing my card payments?

Your payment provider or merchant agreement will usually specify which acquirer is handling your card transactions. In many cases, this information can also be found in your payment dashboard, contract documents, or settlement reports.

How does my acquirer affect settlement times into my business account?

Your acquirer plays a direct role in how quickly funds reach your business account. After a card payment is authorised, the acquirer processes and settles the transaction before releasing the money to you.

How do cross-border payments change the role of my acquirer?

With cross-border payments, the acquirer handles additional processing steps such as currency conversion, international card network routing, and compliance checks. This can affect transaction fees, approval rates, and settlement times.