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Online Payments
The Best Online Payment Service Providers in 2024
NOTE: There is an updated version of this content >> Here…
Online payment systems have revolutionised how transactions are conducted in the UK, becoming an integral part of personal and business financial management. With the increasing shift towards digitalisation, 80% of UK adults prefer managing their finances via online platforms or mobile applications, highlighting a significant departure from traditional banking methods.
Suppose you’re still navigating the complexities of manual payment processing, relying on cash or bank transfers. In that case, you might be pondering on the existence of a more streamlined approach. Fortunately, the digital age brings many online payment solutions to simplify financial transactions for your clients, customers, or supporters.
At the heart of online payment processing lies the fundamental aim of enhancing convenience for your stakeholders, ensuring they can easily contribute to your cause, purchase your products, or pay for your services from wherever they are at any time.
In today’s competitive landscape, the ability to offer an online payment option is not just a bonus; it’s a necessity for reaching your entire potential customer base, regardless of your sector or the scale of your operations.
Take the example of Lucy the manager of a popular slimming club. After integrating an online payment system into their membership management, they saw a dramatic increase in membership renewals and new sign-ups. Within just a few weeks of announcing their new courses online, they had exceeded their funding goals by 25%, significantly boosting their operational budget.
Lucy’s success story is a testament to the transformative power of online payment systems. By embracing digital payment solutions, she was able to tap into a broader audience, securing participation from individuals who might have yet to engage with their events otherwise.
Her experience mirrors countless other UK organisations that have witnessed remarkable growth and efficiency improvements by adopting online payment methods.
As we delve deeper into the mechanics of online payment services, why they’re indispensable for your organisation, and the leading providers in the 2024 marketplace, we aim to equip you with the knowledge to choose the best solution tailored to your needs. Read on for an updated list of top online payment service providers, ensuring you have access to the most current and effective options available.

Why are Online Payment Services Necessary?
In today’s digital-first world, online transactions’ convenience and efficiency are transforming how organisations operate and interact with their supporters. Here’s why integrating online payment services is indispensable for your business or non-profit:
Meeting Standards and Expectations
In an era where digital transactions are the norm, not the exception, the expectation for online payment capabilities is higher than ever. Members, customers, or supporters looking to engage with your services, sign up for events, or make donations prefer a seamless and swift online payment process. Websites needing online payment options risk being perceived as outdated, potentially deterring prospective supporters.
Speeding Up the Payment Process
Online payments markedly expedite the transaction process compared to traditional methods. There’s no waiting for cheques to arrive or to be cleared by the bank. The entire procedure, from making an online payment to the reflection in your bank account, can be completed in seconds. This efficiency leads to improved cash flow for your organisation and instant transaction confirmations, enhancing the experience for new members and event participants.
Saving Time with Automation
Automating payments alleviates the hassle of depositing cheques and manually recording payments and ensures a smoother operational flow. By setting up online payments on your website, transactions are processed automatically, eliminating the need to manually handle or store sensitive credit card information. Moreover, updates to member records are seamlessly managed, further saving time and reducing administrative burdens.
Earning More Revenue
The ability to process payments online can significantly bolster your organisation’s trustworthiness and broaden your reach. By making your services, memberships, or events accessible to a larger audience, you’re likely to see an uptick in revenue. This expansion not only supports the financial health of your organisation but also amplifies its impact.
Keeping Payment Information Secure
Trust is paramount when handling financial transactions. Implementing a secure online payment system reassures your supporters that their financial contributions, whether dues, event registrations, or donations, are processed safely and accurately. This assurance strengthens supporter confidence in your organisation, ensuring their personal and payment details are well protected.

What Are Online Payments?
Navigating the world of online payments can sometimes feel like deciphering a complex code, largely due to the variety of terms that seem to overlap in meaning. These terms include:
- Payment gateway
- Payment processor
- Payment provider
- Payment service or payment system
- Merchant account
Despite their apparent similarity, each of these terms has its own distinct definition and role in the process of facilitating online transactions and payments.
Payment Gateway
A payment gateway acts as the digital conduit that handles the initial submission of your online payment request. It functions similarly to a physical point-of-sale terminal found in retail stores, where you swipe or insert your card for payment. This service captures the payment details on your website and forwards them to the payment processor.
Payment Processor
The payment processor comes into play after the payment gateway, taking on the task of verifying the purchaser’s payment details, such as credit card information, and checking for sufficient funds. Upon successful verification and availability of funds, the transaction is authorized, and the funds are moved from the customer’s account. The payment processor then communicates the transaction’s outcome back through the payment gateway, which updates your website accordingly. Payment processors also often provide the hardware needed for in-person payments, like card readers.
Payment Provider
A payment provider, or payment service provider, is the overarching company that offers payment gateway and payment processor services. Some providers offer both services, streamlining the entire transaction process under one roof.
Payment Service or Payment System
When a payment provider offers various payment gateway options, each with its own set of features and pricing plans, these are referred to as payment services or payment systems. For instance, PayPal is a well-known payment service provider that features multiple payment options, including PayPal Payflow Pro and PayPal Express Checkout.
Merchant Account
A merchant account is essential for holding funds received from online credit and debit card transactions. This special type of bank account temporarily holds the funds from completed transactions before transferring them to your organisation’s primary bank account at set intervals. Setting up a merchant account with your payment provider is a typical requirement for accepting online payments.
Payment Gateway vs Payment Processor: Clarifying the Confusion
Although “payment gateway” and “payment processor” are terms often used interchangeably, they signify different components of the payment process. The payment gateway focuses on authenticating the customer’s payment, acting as the initial point of contact in an online transaction. Meanwhile, the payment processor facilitates the actual movement of funds between banks and merchants, playing a crucial role in the authorization and transfer of payments.
This distinction is particularly important in online transactions, which require the additional authentication step provided by the payment gateway, unlike in physical transactions where a payment processor suffices. Adding to the complexity, some companies offer integrated services that combine the payment gateway and processor functions, potentially simplifying the process for merchants but also blurring the lines between these roles.
As you delve into our list of payment processors, understanding these nuances will help you make informed decisions about the right payment solutions for your online transactions.

How Online Payments Work
The journey of an online transaction from initiation to completion involves multiple steps and participants, including your website, your customers (be they members, donors, or shoppers), and your chosen payment service provider. Here’s a closer look at how the entire online payment process unfolds.
Getting Started with Online Payments
To enable online payments, you typically need the following:
- A merchant account: Not all payment systems require you to have a separate merchant account. For instance, services like PayPal can process payments without one or provide an integrated solution.
- An account with a payment service provider: This is essential for accessing payment gateway and processing services.
- A transaction initiation point on your website: This could be a button labelled ‘Join’, ‘Donate’, ‘Buy’, etc., embedded on your webpage. You can use code from your payment service provider or employ a shopping cart software to facilitate this.
The Transaction Process
When a visitor on your site decides to make a payment, whether it’s for membership fees, event registration, a donation, or a purchase from your online store, the process kicks off as soon as they click the payment button.
- Entering Payment Information: The visitor is prompted to fill in their credit card details on a payment form. This form could be hosted directly on your website or on the payment service provider’s site, depending on the setup.
- Secure Transmission to Payment Gateway: The payment information, along with the transaction request, is securely sent to the payment gateway managed by your payment service provider. The data is encrypted to ensure the privacy and security of the purchaser’s financial details.
- Verification and Authentication: The payment service provider then uses a secure processing service to authenticate the purchaser’s credit card details and verify the availability of sufficient funds for the transaction.
- Fund Transfer and Notification: If the transaction is authorized (meaning the credit card details are valid and there are enough funds), the payment service provider facilitates the transfer of funds from the purchaser’s bank account to your merchant account. Your website is then notified of the successful transaction, which can trigger automatic updates to your records, such as membership databases or event registrations.
- Handling Declined Transactions: In cases where the transaction is declined due to reasons like invalid details or insufficient funds, no money is moved. However, your website will still receive a notification about the transaction status.
This structured process ensures that online payments are not only convenient but also secure, providing confidence to both the seller and the buyer in the digital marketplace.

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Elavon
Accept card payments – lowest rates from 0.27% Keep your card processing fees to a minimum Direct access to the UK’s leading card processing banks We ensure your rates always remain competitive Fill in this quick form to get the best prices on UK card processing Get...
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Accept card payments – lowest rates from 0.27% Keep your card processing fees to a minimum Direct access to the UK’s leading card processing banks We ensure your rates always remain competitive Fill in this quick form to get the best prices on UK card processing Get...
Sage Pay (now Opayo)
Accept card payments – lowest rates from 0.27% Keep your card processing fees to a minimum Direct access to the UK’s leading card processing banks We ensure your rates always remain competitive Fill in this quick form to get the best prices on UK card processing Get...
Allied Wallet
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SmartDebit
Accept card payments – lowest rates from 0.27% Keep your card processing fees to a minimum Direct access to the UK’s leading card processing banks We ensure your rates always remain competitive Fill in this quick form to get the best prices on UK card processing Get...
Cardstream
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Stripe
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Paysafe
Accept card payments – lowest rates from 0.27% Keep your card processing fees to a minimum Direct access to the UK’s leading card processing banks We ensure your rates always remain competitive Fill in this quick form to get the best prices on UK card processing Get...