Accept instant bank payments from your online checkout with the Wonderful Payments API

Simplify your checkout, slash your payment processing costs and benefit from instant settlement.

  • 2,000 monthly transactions for just £19.99 per month (plus VAT)
  • Zero percentage fees
  • Instant payments and instant settlement
  • Integration with existing payment methods
  • Improved security
  • Simplified checkout process
  • Installation documentation and support
Business owner reviewing their Wonderful payments dashboard on an iPad

Wonderful Payments API

By integrating the Wonderful Payments API into your online checkout process you can save big on payment processing, improve your cash flow and make your checkout process simple, fast and secure for your customers.

Slash your payment processing costs

Installation of the API and a subscription to our Plus plan is all that is required.

WooCommerce and Wonderful payments

Simple pricing and subscription

Our Plus plan enables you to process 2,000 monthly transactions for just £19.99 (plus VAT). Unrivalled savings and value for money.

Zero percentage charges

There are no percentage charges and any transactions outside the inclusive bundle are charged at just 1p per transaction.

Limitless possibilities

With our payments API the sky is the limit. You can integrate with any platform or app to uniquely suit your business.

Language independent API.
Open banking for any framework or system.

Wonderful Payments API unlocks open banking for businesses with custom websites and apps.

Benefit from real-time settlement

Accessing the Wonderful Payments API enables you to accept instant bank payments directly from your online checkout. With real-time settlement, customer transactions are processed immediately, ensuring that the funds are transferred to your business account the moment the payment is approved.

This instant access to funds improves your cash flow and allows for faster business operations, giving you a significant advantage in managing your financial transactions efficiently.

Integration with existing payment methods

The Wonderful Payments API is highly versatile, allowing seamless integration with a variety of existing payment methods. Whether you’re using debit and credit cards, Buy Now Pay Later (BNPL) services, or PayPal, our API can work alongside them effortlessly.

This flexibility ensures that you can offer your customers a wide range of payment options, enhancing their overall experience and potentially increasing your conversion rates.

Compare the savings

Compare the payment processing charges of your current providers with the 1p per transaction fee offered by Wonderful for your online transactions.

  • PayPal 1.2% + 30p
  • Stripe 1.5% + 20p
  • Wonderful 1p

The savings are huge. As an example, with an average volume of 500 transactions / month, and an average order value of £50, Stripe’s headline fees of 1.5% + 20p* would cost your business £475 / month. In contrast, you’ll pay just £19.99 / month with Wonderful. That’s a whopping saving, which can be put straight back into growing your business. * As of 1st July 2024

Calculate your savings

Installation documentation and support

Integrating our API is straightforward for developers with API experience. It is language agnostic and uses a standard API protocol, which means it will be compatible no matter which language or framework your website or app is coded in. Our API documentation provides clear instructions to ensure a smooth setup.

Need assistance? Our support team is here to help. Whether you have questions during installation or need troubleshooting, we’re just a message away.

Steps to integrate:

Getting up and running is a quick and easy process. After some basic sign up and verification to link your bank account, you can dive in a begin developing your application against our payments API.

Step 1
Check if your business bank is one of the many UK banks that Wonderful payments currently support here. This is required to receive payments.
Step 2
Once you’ve confirmed that your bank is supported, it’s time to get you on board. To do this, proceed with our Sign Up process and you’ll be invited to download our app, One.
Step 3
Once you have linked your bank account using Wonderful's One app, you’re nearly ready to develop and integrate the API installation into your ecommerce app, website or system.
Step 4
The final step is to contact Wonderful support team to obtain a unique API key that enables the full functionality, security and features of the Wonderful Payments API.

Social Impact:
Solidify your strong ESG stance

Wonderful are committed to making positive change and we provide a free fundraising platform for registered UK charities.

“I’ve been really happy to use Wonderful – we’ve predominantly used it for our company challenges to raise money for a small, lesser-known charity. It’s enormously reassuring to know that all the money raised goes to the charity and that there aren’t any hidden charges.”

Modo25 Logo
Abi Liddle
Modo25

As a result, Wonderful has become very popular in the third sector.

Now, businesses like yours – and their customers – can extend Wonderful’s impact simply by choosing this speedy, simple and secure payment method.

Other Wonderful integrations

Supercharged. Minus the super charges

In addition to our Wonderful payments API, which your developers can use to integrate Wonderful into your online checkout, we have kicked off our third party integrations with a plugin that lets you take payments right from your WooCommerce store. Next up is a plugin for Xero allowing your customers to automatically generate invoices each time they create a payment using the One app. Each integration is priced at just £9.99 / month.

  • WooCommerce

    With zero percentage fees, integrating Wonderful into your WooCommerce store not only slashes payment processing costs, it makes customer checkout a breeze. Find out more about Wonderful's easy to install plugin.
    More info  Download

    WooCommerce Integration
  • Sage

    A software solution for your business' accounting, payments, human resource management, payroll and more.

    Coming soon
    Wonderful Integration with Sage
  • Xero

    Our Accountancy integration allows merchants to import customers from Xero and automatically create and send emails from payments generated using our One app. It only takes a couple of minutes to integrate and connect.

    More info
    Wonderful Integration with Xero
  • Quickbooks

    Accounting software to help your business automate accounting, bookkeeping, invoicing and time, inventory and expenses.

    Coming soon
    Wonderful Integration with QuickBooks

More about our other integrations

Wonderful Payments

Be wonderful.
Get started today.

Accept instant payments at only 1p per transaction.

Happy business owner
A Better Deal with Wonderful Payments

Frequently asked questions

Can’t find the answer you’re looking for? Try our FAQ page or contact support.

What are Payment API’s?
Payment APIs (Application Programming Interfaces) are a set of protocols and functionality that allow businesses to integrate payment processing capabilities into their websites or applications. They enable you to accept various forms of payments, such as credit and debit cards, bank transfers, and digital wallets, directly within your platform. By using a payment API, transactions can be securely processed, authenticated, and settled in real time, providing a seamless payment experience.
How does a Payment API work?
A payment API using Open Banking connects your website directly to customers’ banks. When a customer initiates a payment, the API securely connects to their bank and sends an authorisation request. The bank verifies and confirms the payment, instantly transferring funds to your business account. This reduces fees and speeds up transactions, while ensuring data security and compliance with Open Banking standards, providing a fast and secure checkout experience.
What are the benefits of using a Payment API?
Using a professionally maintained Payment API streamlines payment processing by integrating it directly into your website or app. It ensures real-time transactions, improving cash flow with instant fund transfers. Additionally, the API offers robust security features like encryption and fraud detection, ensuring secure transactions. Developed and supported by experts, the API is regularly updated to comply with industry standards, providing a reliable and efficient payment solution for your business.
Why should I choose the Wonderful One API?
The Wonderful Payment API is fast, simple and secure. You save a fortune on merchant processing fees compared to debit and credit card processing whilst benefitting from our expertise in open banking, and if that’s not enough you get to support our charitable giving platform, enabling hundreds of charities to process donations for free.
Are my payments secure?
At Wonderful, we prioritise security and compliance with advanced technologies and robust data protection. Our payment gateway meets all relevant regulations and standards and we continuously update our fraud detection systems to mitigate threats. Adherence to strict regulatory compliance ensures your peace of mind.
How much will payment processing cost?
1p per transaction. You'll have 2,000 transactions included within your plan. Any additional transactions will be billed at 1p per transaction, whether you process 1 additional transaction, or 100,000.
Are there any setup costs or hidden charges?
No, absolutely no hidden charges! Our Plus plan (£19.99/month) includes 2,000 transactions and full access our payment API. Any additional transactions outside those included in your monthly plan will simply be billed at 1p/transaction.
When will I receive the funds in my bank account?
The payment is instant. You will receive the funds usually within a couple of seconds. This is because the payment is processed in real-time, but the bank may take a little time to process the payment and make the funds available in your account.
How will I process refunds?
Processing refunds, whether partial or full, is seamless with our payment API. You can initiate a refund via a specific API endpoint, which then requires approval in your merchant dashboard. This process provides flexibility and allows you to delegate the final refund approval to designated team members. The intuitive dashboard ensures you have full control over refund management, streamlining the entire process.
How do I integrate the Wonderful One API with my online store?
To integrate the Wonderful payment API with your online store, start by completing the sign-up and verification process to obtain your API key. Next, follow our documentation to develop the integration into your website or app. This integration ensures secure and real-time transactions, providing a seamless checkout experience for your customers.
How will I get the API credentials and documentation?
When you complete the sign up and verification process, our team will provide you with the API credentials. You can also access the documentation online and if you have any questions or need assistance, our support team is available advise you.

Need support or advice?

At Wonderful we're dedicated to making things as easy as possible for our commercial and charity partners to get onboard. We have a range of resources to help you find the information and answers you need to get up and running as quickly as possible.

Live demo

To see instant payments in action, tap the link to make a 10p payment to All Ears Audio.