What Is Open Banking? A Plain-English Explanation
What Is Open Banking?
Open Banking is a system that allows your bank to securely share your financial data with authorised third-party software — but only with your explicit permission. It was introduced in the UK in 2018 following regulations from the Competition and Markets Authority (CMA), making Britain one of the first countries in the world to adopt it at scale.
For small business owners, this means your accounting or invoicing software can connect directly to your business bank account and pull in transactions automatically. No more manual data entry, no more downloading CSV files, and far fewer errors at the end of the month.
How Does Open Banking Actually Work?
When you connect your bank account to a piece of software, that software uses a secure API (Application Programming Interface) to request your transaction data from your bank. Your bank verifies the request and, once you've given consent, sends that data across in real time. Your login credentials are never shared with the software provider — the bank handles the authentication directly.
This is fundamentally different from older methods such as screen scraping, where software would log into your online banking on your behalf. Open Banking is far more secure, regulated by the Financial Conduct Authority (FCA), and far more reliable for day-to-day use.
Why Does It Matter for UK Small Businesses?
Open Banking has become increasingly important in the context of Making Tax Digital (MTD), HMRC's initiative to move tax record-keeping online. MTD for VAT is already mandatory for most VAT-registered businesses, and MTD for Income Tax is on its way for sole traders and landlords. Keeping accurate, real-time financial records is no longer optional — it's a legal requirement for many businesses.
When your accounting software connects to your bank via Open Banking, your records stay up to date automatically. This makes it significantly easier to reconcile transactions, track cash flow, and submit accurate VAT returns without last-minute scrambles.
Which Accounting Tools Use Open Banking in the UK?
Several leading UK accounting platforms have built Open Banking directly into their core feature set. Here are the strongest options for small businesses right now.
Xero
Xero (from £15/month) offers some of the most robust bank feed integrations available for UK businesses, connecting with major high street banks including Barclays, HSBC, Lloyds, and NatWest. Transactions are pulled in automatically and matched against invoices and bills, saving hours of manual reconciliation every week. Xero is fully Making Tax Digital compliant and offers a 30-day free trial with no credit card required.
FreeAgent
FreeAgent (from £19/month) is particularly popular with freelancers and sole traders and offers real-time UK bank feed integrations powered by Open Banking. It also has HMRC submission built in, making it a strong all-in-one choice for businesses preparing for MTD for Income Tax. A free trial is available with no credit card needed, and the interface is genuinely straightforward for non-accountants.
Sage Accounting
Sage Accounting (from £15/month) provides excellent UK bank integrations and is fully MTD-compliant for VAT submissions. It's a well-established name trusted by UK accountants and bookkeepers, which is useful if you work with an external finance professional. Sage works well across a range of trades and service businesses, including plumbers, retailers, and restaurants.
What About Open Banking for Payments?
Open Banking isn't just about reading your bank data — it can also be used to initiate payments directly from a customer's bank account to yours, without going through a card network. This is sometimes called Pay by Bank and is growing in popularity as an alternative to card payments for invoices and online checkouts.
If you use payment tools such as Zettle or SumUp alongside your accounting software, it's worth checking whether they support Open Banking payment initiation, as this can reduce transaction fees compared with traditional card processing. Some invoicing platforms are beginning to integrate this directly into their payment request flows.
Is Open Banking Safe and GDPR Compliant?
Yes — Open Banking providers operating in the UK must be authorised by the Financial Conduct Authority (FCA) and must comply with both GDPR and the Payment Services Regulations 2017. You can revoke a software provider's access to your bank data at any time, either through the software itself or directly via your bank's app or online portal.
The key thing to remember is that you are always in control. Only share access with FCA-registered providers, and review your connected apps regularly through your bank's Open Banking dashboard. Used correctly, it's one of the most practical tools available to help UK small businesses stay on top of their finances with minimal effort.