How to accept credit card payments: A guide for UK and EEA merchants

For any established business operating in the UK or EEA, card payment acceptance is core infrastructure. Consumer reliance on credit and debit cards continues to grow, and merchants who limit their payment options limit their revenue. The practical question is not whether to accept credit card payments, but how to build the right setup for your business model.

This guide covers how to accept credit card payments online, in person, and by phone, including options available to businesses that operate without a traditional merchant account.

Why card payment acceptance matters for established merchants

Accepting credit card payments expands the addressable customer base. Consumers increasingly expect card payment as a baseline, and businesses that rely on bank transfers or cash-only transactions create friction at the point of sale that costs conversions.

Beyond convenience, offering multiple payment methods—credit cards, debit cards, and digital wallets—can materially increase average order values. Customers with card access face fewer barriers to completing larger purchases than those constrained to available cash.

There is also a competitive dimension. In markets where card acceptance is standard, the absence of it signals operational immaturity. For merchants targeting professional or recurring-purchase customers, this perception carries real commercial weight.

Finally, modern payment infrastructure simplifies operations. Integrated payment systems produce transaction records, settlement reports, and reconciliation data that reduce administrative burden and improve financial visibility across the business.

That said, card acceptance carries costs: interchange fees set by the card schemes, processing margins charged by your provider, and in some cases monthly gateway or service fees. Model these against your projected card transaction volume before committing to a provider.

How to accept credit card payments: Getting started with a payment gateway

A payment gateway is the technology that connects your sales environment—whether an e-commerce checkout, a POS terminal, or a virtual terminal—to the card networks and acquiring banks that authorise and settle transactions. Selecting the right gateway is the foundational decision.

Evaluate your requirements. Before approaching any provider, clarify your transaction volume, your sales channels (online, in-person, or both), your currency requirements, and whether you operate in a specialist merchant category that requires a dedicated acquiring relationship. Not all gateways serve all merchant types.

Research and compare providers. Gateway providers differ significantly in pricing structure, supported payment methods, integration complexity, and the merchant categories they will onboard. Look for transparent pricing, clear settlement timelines, and documented support for your specific sales channels.

Integrate and test. Once you have selected a provider, integrate the gateway into your website or POS system and run test transactions before going live. Confirm that authorisation flows, decline handling, and refund processing all work as expected.

Maintain compliance. Accepting credit card payments means operating within the Payment Card Industry Data Security Standard (PCI DSS) framework, which governs how cardholder data is stored, transmitted, and processed. UK merchants must also operate within the FCA's regulatory perimeter for payment services, and EEA merchants are subject to PSD2 requirements including strong customer authentication (SCA).

How to accept credit card payments online and in person

Once a payment gateway is in place, the practical setup varies by sales channel. The three main environments—online, in-person, and telephone—each carry distinct technical and compliance requirements.

Online credit card payments

Accepting credit card payments online begins with integrating your gateway into the checkout flow. There are three common approaches.

• Hosted payment pages redirect customers to a payment page hosted by the gateway provider. This reduces your PCI DSS scope because cardholder data never passes through your own systems.
• Direct API integration keeps the customer within your own checkout environment throughout. This provides greater control over the user experience but increases your PCI DSS obligations, as you are responsible for securing the data environment.
• Pay-by-link generates a unique payment URL that you send to the customer via email, SMS, or messaging platform. This suits invoice-based businesses or merchants handling custom orders where a full checkout integration is not practical.

For most online merchants, a hosted payment page or gateway-managed embedded form offers the best balance of conversion performance and compliance simplicity.

In-person credit card payments

For physical retail or face-to-face service environments, a POS system connected to a card terminal is the standard setup. Key considerations include:

• Terminal type: Countertop terminals suit fixed locations; portable and mobile terminals suit businesses operating across multiple sites or at customer premises.
• Contactless support: Confirm that your terminals support contactless transactions and are configured to the current UK contactless limit (￡100).
• Chip-and-PIN: This remains the standard authentication method for contact card transactions in the UK and EEA; confirm it is supported before selecting a terminal.
• POS integration: Terminals that connect to your stock management, accounting, or CRM systems reduce double-entry and reconciliation overhead.

Security for in-person transactions relies on encryption to protect data in transit and tokenisation to replace stored card data with a non-sensitive equivalent. Both should be confirmed as supported by any terminal or POS solution you evaluate.

Telephone and MOTO payments

Mail order/telephone order (MOTO) payments allow merchants to process card payments taken over the phone or by post. The standard tool is a virtual terminal: a browser-based interface into which the merchant manually enters card details supplied by the customer.

MOTO transactions are card-not-present by definition, placing them outside card-present PCI DSS pathways and into their own compliance track—typically SAQ C-VT—which mandates controls such as restricted virtual terminal access and call recording safeguards to prevent CVV capture in audio logs.

MOTO transactions also carry higher chargeback exposure than card-present transactions, as the customer can dispute that they authorised the payment. Merchants processing significant MOTO volumes should ensure their acquiring relationship explicitly supports this transaction type and that their dispute management processes are documented and robust.

How to accept credit card payments without a merchant account

A merchant account is a type of bank account that holds funds between card authorisation and settlement into your business bank account. Traditionally, every merchant accepting card payments needed a dedicated merchant account with an acquiring bank. That is no longer the case.

Payment facilitators

Payment facilitators aggregate multiple merchants under a single master merchant account, handling the acquiring relationship directly. Individual merchants are onboarded as sub-merchants. The trade-off is that the facilitator assumes responsibility for underwriting and risk management, which can mean lower transaction limits or fund-holding in the event of elevated chargebacks.

Payment service providers

A payment service provider (PSP) offers an integrated stack covering the gateway, processing, and often acquiring under a single commercial relationship. For merchants operating in specialist categories—CBD and cannabis, online trading, adult physical goods, dating services—a PSP with experience in those verticals is often preferable to a generic facilitator. Specialist PSPs can maintain acquiring relationships that general-purpose providers cannot access.

Pay-by-link

Pay-by-link services allow merchants to accept card payments without any gateway integration. The merchant generates a payment link through the provider's dashboard and sends it to the customer directly. Settlement flows through the provider's infrastructure. This suits lower-volume merchants or businesses piloting card acceptance before committing to a full integration.

Get set up with the right credit card payment solution

The right setup depends on your sales channels, transaction volume, and the merchant category you operate in. Fibonatix works with established UK and EEA merchants across online, in-person, and MOTO environments, providing payment gateway solutions, virtual terminals, POS infrastructure, and pay-by-link services under a single relationship. 

Merchants operating in specialist categories—including CBD and cannabis businesses, online trading platforms, adult physical goods retailers, and dating services providers—can access acquiring relationships that mainstream providers typically decline to support.

Disclaimer: Fibonatix is a UK-based, FCA-regulated payment service provider (FRN 768776) specialising in merchant accounts for B2C businesses globally, but B2B exclusively to the UK and EEA. Verify our regulatory status on the FCA Financial Services Register.