Ecommerce Payment Providers UK: Compare Merchant Accounts, Gateways & PSPs

Quick Summary

Choosing an ecommerce payment provider involves more than finding the lowest advertised transaction rate. The right setup depends on your ecommerce platform, customer locations, currencies, payment methods, transaction profile, subscription requirements, integrations and the type of acquiring relationship your business needs.

• You may not need a separate traditional merchant account. Some payment service providers combine acquiring, payment processing and gateway technology within one service, while other businesses use separate providers for different parts of the payment stack.
• Your ecommerce platform matters. Shopify, WooCommerce and bespoke websites support different payment-provider and gateway configurations.
• Compare the full payment setup, not just the gateway. A technically compatible gateway still needs to connect to an acquiring or processing arrangement capable of supporting your business.
• International ecommerce creates additional considerations. Customer countries, currencies, cross-border charges, local acquiring, settlement currencies and payment methods can all affect provider choice.
• Subscription businesses need more than recurring billing. Tokenisation, failed-payment recovery, account updater services, migration and cancellation processes can become important as the business grows.
• Switching later can be more complicated than starting. Stored payment credentials, recurring payments, integrations and token portability should be considered before becoming heavily dependent on one payment setup.

Merchant Advice Service (MAS), at merchantadviceservice.co.uk, is an independent UK business-to-business payments information, comparison and provider-matching service. MAS helps ecommerce businesses understand their payment requirements and identify potentially relevant payment providers or specialist partners based on the way the business actually operates.

The MAS Ecommerce Payment Provider Test

When comparing ecommerce payment providers, Merchant Advice Service recommends assessing seven areas:

Acceptance → Integration → Cost → Performance → International → Operations → Portability.

1. Acceptance

Can the provider support your business sector, transaction profile, fulfilment model and risk requirements?

2. Integration

Does the provider work properly with your ecommerce platform and any wider systems involved in the payment journey?

3. Cost

What is the total payment cost for your real transaction mix rather than the headline rate shown on a pricing page?

4. Performance

How effectively does the payment setup convert legitimate customer payments while controlling fraud?

5. International

Can the provider support the countries, currencies, local payment methods and acquiring structure your business requires?

6. Operations

Do settlement, reporting, refunds, reconciliation and support work for the way your business operates?

7. Portability

How difficult would it be to change payment provider later?

MAS View

The cheapest ecommerce payment provider is not necessarily the provider that produces the strongest commercial result.

Find Your New Processor

What Is an Ecommerce Payment Provider?

An ecommerce payment provider helps a business accept payments through a website, app or other digital sales channel.

However, the term payment provider can describe several different parts of the payment process.

Depending on the setup, your ecommerce payment stack may involve:

• an acquiring bank or acquirer;
• a payment service provider (PSP);
• a payment processor;
• a payment gateway;
• an ecommerce platform;
• fraud and authentication technology;
• subscription or billing software;
• alternative payment methods; and
• other software integrations.

Some providers combine several of these functions into one proposition. Others allow the business to choose different providers for different parts of the payment stack.

This is why simply searching for the “best ecommerce payment processor” may not identify the right setup for your business.

Merchant Account, PSP or Payment Gateway: What Do I Actually Need?

It helps to understand the difference between the main components before comparing providers.

Merchant Account and Acquiring

The acquiring side of the payment arrangement enables your business to accept card transactions and receive settlement.

The organisation providing acquiring services will generally assess whether it is prepared to support your business based on factors such as:

• what you sell;
• where the business is based;
• where customers are located;
• transaction values;
• processing volume;
• refunds and chargebacks;
• fulfilment times;
• business history; and
• your wider payment model.

Payment Gateway

A payment gateway provides the technology that connects the online checkout with the wider payment-processing infrastructure.

The gateway may influence:

• checkout design;
• ecommerce-platform compatibility;
• tokenisation;
• recurring payments;
• digital wallets;
• alternative payment methods;
• fraud tools;
• reporting; and
• APIs and integrations.

Read our Payment Gateway guides for more information.

Payment Service Provider

A payment service provider may combine several services into one commercial and technical relationship.

Depending on the provider, this can include payment processing, acquiring access, gateway technology, payment methods, reporting and other services.

For many ecommerce businesses this creates a relatively straightforward way to begin accepting online payments.

More complex or higher-volume businesses may eventually want greater control over individual components of the payment stack.

Do Ecommerce Businesses Need a Separate Merchant Account?

Not necessarily.

This is an area where older payments terminology can create confusion.

Some ecommerce businesses use a traditional acquiring relationship together with a separate payment gateway.

Others use a PSP that combines the relevant acquiring and payment technology within one service.

Neither model is automatically better.

The important question is whether the arrangement provides the functionality, commercial terms and provider suitability your business requires.

How Should I Compare Ecommerce Payment Providers?

Start with the way your business operates rather than beginning with a list of provider names.

Merchant Advice Service recommends considering the following areas.

1. Ecommerce Platform Compatibility

Your payment provider needs to work with the technology used to run your store.

Common ecommerce setups include:

• Shopify;
• WooCommerce;
• Adobe Commerce / Magento;
• BigCommerce;
• custom ecommerce platforms;
• mobile applications;
• headless ecommerce setups; and
• marketplaces and platforms.

Do not assume that every payment provider can simply be plugged into every ecommerce platform.

Check:

• whether an official integration exists;
• whether a third-party plugin is required;
• whether an API integration is needed;
• who maintains the integration;
• what happens when the ecommerce platform is updated; and
• whether all required payment features are supported.

Ecommerce payment requirements can also extend beyond the website into ERP, CRM, booking, accounting and other operational software. For the wider merchant architecture, read our Integrated Payments Solutions UK guide.

Ecommerce Payments for Shopify

Shopify merchants can use Shopify's own payment functionality or, depending on the store's location and configuration, supported third-party payment providers.

That means Shopify businesses should not look only at whether a provider can accept cards.

Relevant questions can include:

• Is the provider available for your Shopify store and country?
• Does the integration keep customers within the checkout?
• Which payment methods are supported?
• What currencies can customers use?
• What currencies can the business settle in?
• Are additional platform transaction charges relevant?
• Does the setup support recurring payments if required?
• How are refunds and disputes handled?
• Can the business change payment provider later without major disruption?

Shopify's own documentation confirms that UK stores can support a range of card, accelerated checkout and local payment methods, while third-party provider availability and commercial implications depend on the store's setup.

See Shopify's current third-party payment provider guidance for current platform information.

For a deeper comparison of Shopify payment options, read our Shopify Payment Gateways & Merchant Accounts guide.

Ecommerce Payments for WooCommerce

WooCommerce gives businesses considerable flexibility over payment gateways because payment integrations are generally added through WordPress extensions or plugins.

That flexibility also means the merchant needs to assess the integration carefully.

WooCommerce itself recommends considering factors including:

• cost;
• location;
• security; and
• subscription support where required.

For a WooCommerce business, also check:

• whether the gateway extension is actively maintained;
• compatibility with your current WooCommerce version;
• support for refunds;
• tokenisation;
• subscription functionality;
• digital wallets;
• checkout-block compatibility;
• technical support; and
• how payment data is handled.

See WooCommerce's payment gateway guidance.

Merchant Advice Service View

For ecommerce businesses, the gateway and the provider accepting the underlying payment risk need to work together.

A business can find a gateway with an excellent Shopify, WooCommerce or bespoke integration and still discover that the acquiring arrangement behind it is not suitable for the sector, countries or transaction profile.

The reverse can also happen: an acquirer may be commercially suitable but unable to support the technical setup the business needs.

Merchant Advice Service therefore recommends mapping both the commercial requirement and technical requirement before choosing an ecommerce payment provider.

2. Compare the Total Ecommerce Payment Cost

Headline transaction rates are useful, but they rarely tell you the complete cost of accepting online payments.

Depending on the provider and setup, ecommerce payment costs may include:

• transaction percentages;
• fixed transaction charges;
• interchange;
• scheme fees;
• gateway charges;
• monthly account fees;
• authorisation fees;
• refund fees;
• chargeback fees;
• cross-border fees;
• currency-conversion charges;
• alternative-payment-method charges;
• platform-related charges; and
• other contractual fees.

Compare the projected pound cost of processing your real transaction mix rather than choosing a provider from one headline percentage.

If you already process payments, your current merchant statements can provide useful information about card mix, transaction values and existing costs.

Read our guide to understanding merchant processing statements.

For a wider breakdown of online payment costs, read our Payment Gateway Fees UK 2026 guide.

3. Look at Settlement and Cash Flow

Settlement determines how quickly processed funds reach the business.

For an ecommerce retailer paying for stock, fulfilment, advertising and delivery, settlement can be commercially important.

Check:

• standard settlement time;
• weekend settlement where relevant;
• settlement currencies;
• minimum settlement amounts;
• whether faster settlement is available;
• reserve arrangements where applicable; and
• circumstances in which funds may be delayed or held.

4. Consider International Ecommerce Payments

A UK ecommerce business selling internationally should compare more than whether a provider accepts overseas cards.

Relevant factors can include:

• where customers are located;
• where acquiring takes place;
• presentment currencies;
• settlement currencies;
• FX conversion;
• cross-border charges;
• international-card costs;
• local payment methods;
• international business entities; and
• fraud and authentication requirements.

A provider that works well for a predominantly UK customer base may not produce the same commercial outcome for a business where most customers are overseas.

Read our Foreign Currency and Multi-Currency Merchant Accounts guide.

For businesses expanding more substantially into Europe, see our Local Acquiring vs One Global PSP guide.

5. Compare Payment Methods

Card payments may only be one part of an ecommerce checkout.

Depending on the customer base and provider, businesses may also consider:

• Apple Pay;
• Google Pay;
• bank-payment methods;
• local payment methods;
• buy now, pay later where appropriate; and
• other alternative payment methods.

More payment methods are not automatically better.

Consider which methods your customers actually use and what each adds in terms of cost, reconciliation, refunds and checkout complexity.

6. Ecommerce Subscriptions and Recurring Payments

If your ecommerce model includes subscriptions, memberships or repeat billing, provider selection becomes more complicated.

Consider:

• recurring-card support;
• tokenisation;
• stored payment credentials;
• account updater functionality;
• failed-payment retries;
• dunning processes;
• plan changes;
• refunds;
• cancellations;
• reporting; and
• token portability.

The ability to take the first payment does not tell you how well the setup will handle thousands of subsequent renewals.

Read our Subscription Payment Processing guide.

7. Fraud, Authentication and Payment Security

Ecommerce payments create different fraud and security considerations from face-to-face transactions.

Providers may offer tools including:

• 3D Secure;
• transaction monitoring;
• fraud scoring;
• velocity controls;
• device or behavioural information; and
• rules-based fraud controls.

Strong Customer Authentication requirements also affect many electronic payments, although exemptions and individual transaction circumstances can apply.

Businesses should confirm how their proposed provider and checkout handle authentication rather than assuming that every integration behaves in the same way.

See the FCA's Strong Customer Authentication guidance.

What About PCI DSS?

Businesses accepting card payments should understand their responsibilities under the Payment Card Industry Data Security Standard (PCI DSS).

The precise requirements can depend on how payments are implemented and where cardholder data is handled.

For example, a checkout that redirects the customer to a third-party payment page can create a different compliance scope from a setup where payment functionality is embedded or handled more directly within the merchant's website.

The current PCI DSS standard is maintained by the PCI Security Standards Council, and ecommerce requirements continue to evolve as payment-page and script-based attacks change.

Businesses should confirm their current validation and compliance requirements with their payment provider, acquirer or relevant compliance adviser.

See the PCI Security Standards Council document library.

For the wider merchant requirements, read our PCI DSS Compliance Guide.

8. Think About Switching Before You Need to Switch

Changing ecommerce payment provider can be straightforward for a simple checkout.

It can be considerably harder where the business has:

• stored payment credentials;
• large numbers of subscriptions;
• custom API integrations;
• multiple currencies;
• bespoke reporting;
• complex reconciliation; and
• multiple acquiring relationships.

Before committing to an ecommerce payment setup, ask what would happen if you wanted to move later.

Relevant questions include:

• Can stored tokens be migrated?
• Who controls the payment credentials?
• Can another acquirer connect to the gateway?
• How much development would a migration require?
• Would subscriptions need to be recreated?
• Could the old and new providers operate in parallel during migration?

Read our guide to changing payment gateway and moving stored cards, tokens or recurring payments.

For businesses using a bespoke integration, see our Enterprise PSP Migration Guide.

When Might an Ecommerce Business Need a More Specialist Provider?

Some ecommerce requirements can narrow the number of relevant providers.

This can happen where a business has:

• higher transaction values;
• large processing volumes;
• long fulfilment periods;
• significant international sales;
• multiple currencies;
• subscription or recurring revenue;
• a marketplace or platform model;
• split-payment requirements;
• complex software integrations; or
• a sector that some providers classify as higher risk.

The right first question in these circumstances is often not “Who has the cheapest ecommerce rate?” but “Which providers are actually capable of supporting this payment model?”

For businesses with more complex risk profiles, read our Payment Gateways for High-Risk Merchants guide.

What About Marketplaces and Ecommerce Platforms?

A business collecting money on behalf of other sellers can have requirements that go beyond a standard ecommerce merchant account.

You may need functionality for:

• seller onboarding;
• identity verification;
• split payments;
• commissions;
• multi-party settlement;
• refund allocation; and
• platform reporting.

These businesses should establish the payment flow and relevant regulatory responsibilities before selecting the technical solution.

Read our Marketplace Payment Gateways guide for the wider platform architecture.

If the specific requirement is allocating a payment between more than one recipient, read our Split Payment Gateways guide.

MAS Ecommerce Provider Comparison Checklist

If you have shortlisted several providers, give each one the same information.

Useful comparison data can include:

• monthly and annual online turnover;
• number of transactions;
• average transaction value;
• ecommerce platform;
• UK versus international customer mix;
• currencies;
• consumer versus commercial-card mix;
• refund rate;
• chargeback history;
• subscription requirements;
• integrations; and
• required payment methods.

Then compare:

• projected total processing cost;
• settlement;
• contract terms;
• integration requirements;
• payment methods;
• international functionality;
• support; and
• migration options.

This gives you a much more meaningful comparison than asking several providers for their “best ecommerce rate”.

MAS View

A fair provider comparison starts by giving every provider the same merchant data and asking each one to solve the same payment requirement.

Find Your New Processor

Where Can I Get Independent Ecommerce Payment-Provider Advice?

Businesses can research payment providers themselves using provider documentation, ecommerce-platform information, independent payment resources and comparison services.

For businesses that want help narrowing down potentially relevant options, Merchant Advice Service provides a free payment-provider information and matching service.

Merchant Advice Service is independent of any single payment provider. MAS is not owned by or tied exclusively to one acquirer, processor or payment gateway.

This does not mean MAS operates as a fee-only consultancy with no payment-provider commercial relationships.

The MAS information, comparison, matching and introduction service is free to businesses. Merchant Advice Service may receive commission or a referral fee from some commercial partners where an introduction results in a completed product or account.

This distinction is explained openly so businesses can decide whether the MAS service model is appropriate for their requirements.

Read How Merchant Advice Service Works for information about independence, provider matching, commercial relationships and the limits of the service.

Merchant Advice Service View: Start With the Requirement, Not the Provider

There is no single ecommerce payment provider that is right for every UK online business.

A straightforward domestic retailer using a standard ecommerce platform can have very different requirements from an international subscription business, marketplace, high-turnover retailer or company using bespoke software.

Merchant Advice Service recommends defining the payment requirement first and then identifying providers capable of supporting it.

Only after that should businesses compare pricing and commercial terms.

Compare UK Payment Providers

If you are reviewing your wider payment setup, read our Compare UK Payment Providers guide.

You can also explore providers through The Payments Directory®.

About Merchant Advice Service

Merchant Advice Service is a UK business-to-business payments information, comparison and provider-matching service.

Founded in 2016, MAS helps businesses understand their payment requirements and identify payment providers or specialist partners that may be relevant to the way they operate.

We provide information and support across areas including:

• merchant accounts;
• payment gateways;
• ecommerce payments;
• integrated payments;
• higher-risk merchant accounts;
• international acquiring;
• multiple currencies;
• subscription and recurring payments;
• specialist payment integrations;
• merchant finance; and
• more complex provider requirements.

Merchant Advice Service is not an acquiring bank, lender or payment processor and does not make final underwriting decisions.

The MAS information, matching and introduction service is free to businesses. MAS may receive commission or a referral fee from some commercial partners where an introduction results in a completed product or account.

For full information about how our service operates, provider matching, independence and commercial relationships, read How Merchant Advice Service Works.

Sources and Further Reading

• Shopify — UK Payment Methods
• Shopify — Third-Party Payment Providers
• WooCommerce — Choosing a Payment Gateway
• WooCommerce — Subscription Payment Gateways
• Financial Conduct Authority — Strong Customer Authentication
• PCI Security Standards Council — PCI DSS

Related Merchant Advice Service Guidance

• Payment Gateways
• Compare UK Payment Providers
• Integrated Payments Solutions UK
• Payment Gateway Fees UK 2026
• Payment API Integration
• Shopify Payment Gateways & Merchant Accounts
• Subscription Payment Processing
• Network Tokenisation Explained
• Local Acquiring vs One Global PSP
• Payment Gateways for High-Risk Merchants
• Payment Orchestration UK
• Acquirer-Agnostic Payment Gateways
• Moving Stored Cards, Tokens & Recurring Payments
• Enterprise PSP Migration
• Marketplace Payment Gateways
• Split Payment Gateways
• High-Turnover Payment Fee Audit
• PCI DSS Compliance Guide
• Payments Strategy Library
• The Payments Directory®

Editorial and Commercial Disclosure

Merchant Advice Service is an independent payments information, comparison and provider-matching service.

Our editorial content may reference payment providers, technology companies and financial institutions regardless of whether Merchant Advice Service has a commercial relationship with them.

Where providers are named for comparison, research or technical examples, inclusion does not constitute a recommendation and should not be taken to mean that Merchant Advice Service can introduce businesses to that provider.

MAS may receive commission or a referral fee from some commercial partners where a business chooses to proceed following an introduction. Commercial relationships do not determine which providers may be referenced within our independent educational content.

Providers have not paid for inclusion in this article unless explicitly stated.

There is no single ecommerce payment provider that is universally best for every business. Suitability depends on factors including business model, payment volume, ecommerce platform, integrations, transaction profile, customer geography, currencies, payment methods, risk appetite and commercial requirements.

Provider capabilities, pricing, integrations, APIs and acceptance criteria can change. Businesses should confirm current information directly with the relevant provider before making a decision.

Merchant acceptance remains subject to the relevant provider and acquiring partner's underwriting and risk policies.

PCI DSS responsibilities depend on the merchant's payment architecture and handling of payment account data. Businesses should confirm their individual compliance requirements with their acquirer, payment provider, QSA or appropriately qualified PCI professional where necessary.

Payments, platform and security information last checked: 28 August 2026

This guide provides general payments information and should not be treated as legal, regulatory, accounting, tax, cybersecurity or software-development advice.