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Open banking: Everything you need to know

Brad Ewin
Written by
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Last editedJun 202211 min read

What is open banking?

Open Banking refers to the process of banks and other financial institutions opening up data for regulated providers to access, use and share.

Don’t worry - it’s not as unsafe as that description might make it sound. Banks are effectively putting in place the infrastructure for their customers’ data to be shared more easily with third parties, when the customer chooses to do so. For example, the GoCardless Instant Bank Pay feature is powered by Open Banking.

That last part is important. Open banking isn’t some ploy to allow banks to more easily sell their customers’ data. The intention is quite the opposite - open banking was conceived for the ultimate purpose of improving financial services for customers. And by opening up access to data they’ve historically kept in-house, it allows new companies and new products to come to market, and use this data in helpful, innovative ways.

So what does it all mean?

  • For financial service providers - At the top of the chain, open banking will allow financial service providers to significantly innovate on their product offerings to businesses.

  • For businesses (large and small) - Those innovations made by financial service providers will mean more effective and efficient financial tools in your business - notably payments. Which will mean things like more automation, freeing up more time, doing away with the headaches of manual tasks, and ultimately saving you money.

  • For customers - Open banking will mean better ways to spend, borrow, and invest.

Open Banking vs. open banking - what’s the difference?

The capitalised “Open Banking” is the UK term, whereas the non-capitalised “open banking” is the generic, global term.

The concept of open banking exists in many countries around the world, in different stages of progress. It’s worth noting that open banking tends to operate at a country level - there is no shared, global open banking initiative.

In countries other than the UK, open banking may have its own specific, in-country term.

What problems is open banking solving?

There’s no one, specific, major problem open banking is solving. Instead, in the simplest terms, open banking is trying to spark competition and innovation in the financial services sector, to create better products and experiences for businesses and consumers.

Some broad problems that open banking can help solve include:

  • Poor trust in banks (see image below)

  • friction caused by data and processes being very tightly built into the banking product

Open banking: Everything you need to know - Edelman Trust Barometer

(Above: Financial services is the least trusted industry sector, according to the Edelman Trust Barometer 2020.)

Some opportunities that open banking strives for include:

  • Helping people to better transact, save, borrow, lend and invest their money

  • Reduce overdraft fees

  • Improve customer service

  • Increase your control of your financial data

What are the benefits of open banking?

  • ✅ Convenience

  • ✅ Cost reduction

  • ✅ Personalisation

  • ✅ Improved decision-making

These are the broad benefits open banking is bringing to the market. Not just for consumers, but also for businesses.

By securely opening up access to your banking data (with your consent), two things happen:

  1. There’s a new swathe of highly-useful financial information about you or your business that can now be used by software products, to your benefit.

  2. Entirely new software products can be created, encouraging new entrants to the market to innovate and compete for your business.

It’s thanks to this openness and competition that you’ll be able to get financial products better-tailored to your specific needs, and are likely to see costs go down.

It’s also inherent that with access to more of your financial data, you’ll see financial products using this to get better and better at helping you make beneficial decisions.

Expect to see things like:

  • All-in-one overviews - Aggregation of all your financials, spanning bank accounts, credit cards, investments, loans, pension and more, all in one place.

  • Increased availability - For some, things like good borrowing terms just aren’t available. And others may just be flat-out denied. But with new access to banking data, consumers and businesses who have historically been boxed-out will gain newfound access to certain financial products.

  • More automation - With banking data becoming open and accessible in a standardised way, expect products to further automate currently-manual tasks, and to see an increase in “robo-advice”.

Improved online payment experiences, such as Instant Bank Pay - where businesses and their customers will be able to make and take bank-to-bank payments that are faster, more flexible, and rivalling (or even replacing) card payments.

What data does open banking help “open up”?

There are three broad areas open banking is “opening up” - account data, product data, and payment initiation.

Account data

Account data is what you’d expect. Things like:

  • Account holder’s name

  • Account type

  • Currency

  • Date the account was opened

  • Transaction info (e.g. amounts, merchants, etc.)

Product data

Product data is around the products and services a financial institution might offer. For example, historically you would have to go into a bank branch to find out what they can offer you as a customer. Now you can give them a call, or better yet browse their website.

But with open banking this info is put into a standard format, which makes it easier for others to show you the best options for you. (Imagine your accounting software automatically telling you when you’re better off switching banks, and showing you exactly which account to go for.)

Payment initiation

Payment initiation is all about making payments from one bank account to another. But instead of having to log in to online banking and manually go through the payment process step-by-step, with open banking this process can be initiated by other software, apps, or websites, and sped up - provided the account holder explicitly consents.

There are also significant benefits for the recipient of the funds. Imagine how many payments a large utility company gets that are for the wrong amount with the reference "electricity" and therefore can't ever be reconciled! Open banking will solve that issue.

How does open banking work?

Technologically-speaking, open banking relies on APIs (application programming interfaces). An API is just a structured way for one program to offer services to another program. Or, put even more simply, it’s just a way of helping software speak to other software.

Think about the data we’ve covered above - account holder’s name, account type, currency, etc.. APIs are effectively the instructions for how a third party can access that data from a bank.

(Fun fact: GoCardless has its own API.)

Once these APIs are agreed by everyone involved in the open banking initiative (e.g. the government, regulators, and banks), it’s up to the banks to build and implement them. Once they have, businesses can start accessing them and building new and innovative products using them. The customers of these businesses - which could be consumers, small businesses, or even enterprise companies - would then ultimately benefit, by using these innovative products.

Open banking use cases

Key examples include:

Better payments solutions for businesses - With the payment initiation side of open banking, businesses could use payment products that improve cash flow, lower costs, increase visibility and control, and reduce fraud.

Better borrowing terms - If you don’t have much credit history, you could be prevented from getting favourable borrowing terms. But with open banking, your historical bank account data can be accessed by lenders to help better demonstrate your creditworthiness.

Better financial management - By accessing your account data, open banking products could analyse all the money coming into and going out of your accounts, helping you better identify problem areas and opportunities (e.g. lower fees, better interest).

Account aggregation - Essentially, being able to see all of your accounts in one place. Instead of having to log in to multiple different accounts in your web browser, or switch between multiple apps on your phone.

Open banking in the UK 🇬🇧


In the UK, open banking (branded as Open Banking) is guided by the Open Banking Standard (OBS) - a framework published by the Open Banking Implementation Entity (OBIE, trading as Open Banking Limited).

The OBIE is a company that was established by the Competition and Markets Authority (CMA) to oversee the implementation of the Open Banking Standard. It’s governed by the CMA and funded by the UK’s nine largest banks and building societies: Allied Irish Bank, Bank of Ireland, Barclays, Danske, HSBC, Lloyds Banking Group, Nationwide, RBS Group and Santander.

Open banking in the UK is regulated by the Financial Conduct Authority (FCA).

While all these entities are involved in the design and implementation of open banking in the UK, there are four core parties involved in “using” open banking:

  • Account providers - Such as banks and building societies. Also referred to as Account Servicing Payment Service Providers (ASPSPs). These are the organisations that implement the Open Banking Standard, allowing their customers’ data to be accessed by third parties, when consent is given.

  • Third party providers - Also referred to as Account Information Service Providers (AISPs - for accessing account info) and Payment Initiation Service Providers (PISPs - for making payments). These are the businesses doing the innovating, creating products and services which use the newly-accessible customer data held by banks.

  • Technical service providers (TSPs) - Companies that work with regulated providers to deliver open banking products or services. Essentially, TSPs collaborate with account providers and third party providers to help deliver open banking products and services.

  • Consumers - Both individuals and businesses. They ultimately benefit from the open banking products and services developed by third party providers.

Examples of Open Banking in the UK

Some examples of Open Banking features on the market right now include:

There are many more, including 40+ Open Banking apps and products that are currently listed on the Open Banking app store.

Timeline of Open Banking in the UK

  • Jul 2013 - The European Commission publishes a proposal for a revised PSD2. The recommendation is that account providers (e.g. banks) allow third parties to access account data and initiate payments, when they have consent - the foundation of open banking.

  • Sep 2014 - The Open Data Institute and Fingleton Associates publish a report, recommending that banks create standardised APIs to allow third parties access.

  • Jan 2016 - The final PSD2 text is published in the Official Journal of the EU. EU member states are required to apply the majority of provisions within 2 years.

  • Feb 2016 - Initial set of open banking guidelines published by HM Treasury, indicating how Open Banking data should be created, shared, and used.

  • Aug 2016 - The CMA publishes a report on its investigation into the UK’s retail banking market.

  • Sep 2016 - The Open Banking Implementation Entity is formed.

  • Mar 2017 - Open Data launches, which makes product info, branch locations and opening times, and ATM locations available.

  • Jul 2017 - Specifications are issued for account information and transaction and payment initiation.

  • Oct 2017 - Open Banking Directory enrolment launches for regulated participants.

  • Jan 2018 - The PSD2 deadline arrives for EU member states. All payment service providers must allow third parties open access to customer account data and payment services. Applies to all payments where one provider is in the EEA.

  • Jan 2018 - In the UK, the CMA 9 deadline arrives. The nine largest UK current account providers must provide an open API for current accounts. The Open Banking Standard launches.

  • Mar 2018 - Version 2 of the Open Banking Standards is released.

  • Sep 2018 - Version 3 of the Open Banking Standards (including Customer Experience Guidelines) is released.

  • Sep 2019 - The PSD2 RTS deadline arrives, prohibiting access of data beyond that which has been explicitly authorised by a customer. Screen scraping techniques are also to be banned, and strong customer authentication is required for electronic payments.

Frequently asked questions

🗣 Which banks use Open Banking?

Only the UK’s nine largest banks and building societies (also known as the CMA9) are required to make data available via Open Banking. They are:

  • AIB Group UK (trading as First Trust Bank in Northern Ireland)

  • Bank of Ireland UK

  • Barclays Bank

  • HSBC Group (including First Direct and M&S)

  • Lloyds Banking Group (including Bank of Scotland and Halifax)

  • Nationwide Building Society

  • NatWest Group (including NatWest, Royal Bank of Scotland and Ulster Bank NI)

  • Northern Bank Limited (trading as Danske Bank)

  • Santander UK

Other UK banks and building societies can choose to take part in Open Banking, but aren’t required to. The Open Banking Implementation Entity lists the following additional banks and building societies as currently offering Open Banking:

  • Arbuthnot Latham & Co Limited

  • BFC Bank

  • C Hoare & Co

  • Clydesdale Bank

  • Contis

  • Coutts & Company

  • Coventry Building Society

  • Creation Financial Services

  • Cynergy Bank

  • Ghana International Bank

  • Hargreaves Lansdown Savings

  • ICBC (London)

  • Industrial and Commercial Bank of China

  • Investec

  • MBNA

  • Metro Bank

  • Mizuho Bank

  • NewDay

  • Permanent TSB

  • Prepay Technologies

  • Project Imagine

  • Revolut

  • Sainsbury’s Bank

  • SG Kleinwort Hambros Bank

  • Starling Bank

  • Tesco Bank

  • The Co-operative Bank

  • The Governor and Company of the Bank of Ireland

  • The Royal Bank of Scotland

  • The Royal Bank of Scotland International

  • Tide Platform

  • TSB Bank

  • Turkiye Is Bankasi As

  • Union Bank of India

  • Vanquis Bank

  • Virgin Money

  • Wirepayer

  • Yorkshire Building Society

🗣 How safe is open banking in the UK?

Like all good financial technologies, open banking is designed to be very secure. It’s implemented by banks, so is subject to their rigorous security measures.

The consumer is always in charge of who is granted access to their data, and this access can always be revoked if they wish.

And if fraudulent payments are made, your bank or building society will pay your money back under appropriate circumstances.

In addition, open banking products and services are regulated by the FCA (or the European equivalent, if they’re located in the EU), and consumers are also protected by data protection laws and the Financial Ombudsman Service.

🗣 Is PSD2 Open Banking?

PSD2 is not the same as Open Banking, but the two are closely related.

PSD2 is an EU regulation intended to increase competition and innovation in the financial space. It removes the monopoly banks have on the use of customer data, allowing other businesses to use that data as well, with the customer’s permission.

Open Banking is the secure way for providers access to your financial information, in the UK. It was a result of PSD2, but they are not the same thing. PSD2 requires banks open up access to customer data (and remember: it’s only shared with your consent), but Open Banking specifies a standard format for the process.

Open Banking also improves the online payments process, allowing customers to make payments directly from their bank account, which can directly authenticate the transaction.

🗣 "Can I use the Open Banking APIs?"

Yes. Getting started using the Open Banking APIs depends on whether you’re a:

  • Third party provider (Account Information Service Provider / AISP, or Payment Initiation Service Provider / PISP)

  • Account provider (Account Servicing Payment Service Provider / ASPSP)

  • Technical service provider (TSP)

For third party providers, enrolling with Open Banking takes 4 steps:

  1. Get regulated - You may already have the required regulatory permissions. If not, apply to the FCA or European equivalent.

  2. Enrol onto the Open Banking Directory - This is optional, not required, but is an important part of the Open Banking ecosystem, as it shows off the verified details of all participants.

  3. Test your service in the Directory Sandbox - Once your identification and validation checks are successful, you’ll be able to test your service here with dummy data.

  4. Go live - Once your regulatory status is confirmed by the FCA or European equivalent, and your enrolment is complete, you’ll be added to the live Open Banking Directory. You can start connecting with account providers to test your service. And when you’re ready, you can launch your service with customers.

For account providers, the Open Banking Standard is free to use. The Open Banking Implementation Entity also offers additional optional services:

  • Conformance and Certification

  • Open Banking Directory

  • Dispute Management System

For technical service providers, becoming part of the Open Banking Ecosystem takes 4 steps:

  1. Deciding your service - Before you begin, you need to know who you’ll be serving, and what you’ll be offering. This could be infrastructure, or a particular type of product or service.

  2. Join the Open Banking Directory Sandbox - You’ll need to provide a primary business and a primary technical contact (they can be the same person, or different people), your company name and number as they appear on the Companies House register (or European equivalent) and as they have been or will be used if you apply to the FCA (or European equivalent) to become regulated.

  3. Test your service in the Directory Sandbox - Once checks are completed successfully, you can use the Directory Sandbox.

  4. Partner with Open Banking providers - You can use the OBIE’s list of regulated third party providers and regulated account providers as your starting point, if you’d like.

🗣 What is an Open Banking credit check?

A new kind of credit checking powered by directly accessing the financial information your bank holds on you, using Open Banking.

They differ from traditional credit checks, which instead typically rely on third parties whose business it is to build a profile of your credit history. These credit checks will look at things like:

  • Do you pay your credit back on time?

  • How much credit do you currently have?

  • How well do you manage your credit?

New, Open Banking-powered credit checks directly access the financial data your bank holds on you, with your consent. The advantages of this are:

  • Freshness - Rather than working off historic data sourced from third parties, Open Banking credit checks work off the most up-to-date info straight from your bank.

  • Accuracy - Traditional credit checks don’t give the full picture of your financial situation. Opening up your banking data helps the credit checker better assess the risk of giving you credit.

  • Speed - Well-built Open Banking credit checking services could take advantage of the standardised nature of Open Banking, and use full automation to run a faster end-to-end credit checking process.

  • Better rates - Ultimately, the more data a credit checker can get on your financial situation, the better-informed they are of the risk you pose, and ideally this results in a better rate for you.

A great example of the benefits of Open Banking credit checks is a young person applying for their first mortgage. If they’ve been financially responsible and lived within their means, been renting their accommodation, and haven’t taken out a loan for a car or any other major purchases like that, they potentially have a very thin file upon which favourable credit assessment can’t be performed, via a traditional credit check.

They’re likely to be granted very unfavourable terms, despite having lived very financially responsibly. This is where Open Banking credit checks can save the day - by opening up the data from their bank to a mortgage provider, the mortgage provider could see, for example, their long history of paying rent on time. With this data to hand, the mortgage provider could assess the applicant as a lower risk than a traditional credit check would, enabling them to offer more favourable terms.

GoCardless and open banking

In 2020, we completed a $95million funding round to accelerate our investment in open banking.

We've since released our first open banking-powered feature in GoCardless – Instant Bank Pay. Instant Bank Pay complements the existing Direct Debit functionality of GoCardless with a simple, convenient way to collect one-off payments.

Alternative options for one-off payments were limited:

  • Cards have expensive transaction fees

  • Bank transfers offer a poor customer experience

  • Direct Debit is not optimised for one-off payments

Instant Bank Pay payments are confirmed instantly, which means better visibility for you and your customers, less time spent chasing one-off payments, and a smoother customer experience.

Instant Bank Pay

Complement your recurring payments with a simple, convenient way to collect one-off payments powered by open banking.

Find out more

Are you a GoCardless partner? Check out our dedicated Instant Bank Pay page for partners.

Interested in automating the way you get paid? GoCardless can help
Interested in automating the way you get paid? GoCardless can help

Interested in automating the way you get paid? GoCardless can help

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