An open banking solution provider connects your business to customer bank accounts through application programming interfaces (APIs). The provider handles the authentication, data retrieval, and normalisation work that would otherwise mean building hundreds of individual bank integrations yourself. In the United Kingdom, for example, open banking user connections grew 36% in 2025 to reach 16.5 million. Providers simplify the process for businesses.

The right open banking provider moves customers easily through verification, funding, or underwriting flows. The wrong one shows up as dropped signups, failed payments, and a compliance burden you didn’t plan for. Choosing between the best open banking providers means understanding which banks are supported, how deep the data goes, and what happens when something breaks.

Below, we’ll discuss how to choose an open banking provider, why choosing the right one matters, and how to assess security and compliance.

Key takeaways

• The right open banking provider affects conversion, compliance exposure, and how much engineering rework you face if you need to switch.

• Coverage numbers matter only if they include the specific banks your customers use. Connectivity method affects how stable that coverage stays over time.

• Verification depth, integration quality, and a provider’s track record on uptime and compliance matter more than any single feature on a comparison chart.

What is an open banking provider?

An open banking provider connects businesses to their customers’ bank accounts using APIs to pull account data, verify identity, and confirm balances or transaction history with the account holder’s permission. A business can ask the customer to log in to their bank through a secure interface and share the data needed in seconds.

Why does choosing the right open banking provider matter?

The provider you pick shapes what customers experience at a key moment: the point where they’re handing over financial information to complete a signup, loan application, or payment setup. If you get it wrong, the fallout can show up in conversion, compliance exposure, and how much rework your engineering team faces later.

Choose carefully to avoid:

• Conversion risk: If the connection flow is confusing or a customer’s bank isn’t supported, you can lose that customer. Drop-off in bank-linking flows often traces back to coverage gaps rather than customer hesitation.

• Switching cost: Once you’ve built verification, underwriting, or account funding flows around a provider’s API, moving to a new one means re-architecting data models, retesting edge cases, and possibly re-authenticating your entire user base.

• Compliance exposure: The provider’s consent flows and data retention practices become part of your compliance posture because you’re the one collecting the customer’s financial data.

• Operational reliability: A provider’s response time when a major bank changes its login flow overnight determines whether your customers see a hiccup or multiday outage.

What should you look for in bank coverage and connectivity?

You’ll need coverage among the institutions your customers use. A provider with broad coverage but thin support for community banks or credit unions won’t help much if your customer base skews towards smaller institutions. Check the list against your customer footprint.

Regarding connectivity, you’ll want direct API connections, which means the provider has a formal, ongoing integration with the bank, typically through a standardised open banking API. These connections tend to stay stable even when the bank redesigns its website or app. Credential-based connections read data by simulating a login through the bank’s customer interface: they’re used for banks that haven’t built a direct API relationship yet, and they tend to be more sensitive to layout or login changes on the bank’s side.

Banks update their systems regularly. What separates providers is how fast they detect a broken connection, fix it, and reprompt affected users to reconnect instead of leaving them to hit silent verification failures.

Ask any provider you’re evaluating for the split between direct and credential-based connections across the banks your customers use most. That split and the provider’s track record for fixing breaks quickly can tell you a lot about what to expect.

What verification capabilities should an open banking provider offer?

Different open banking use cases call for different depths of bank data. Map your needs before comparing providers on capability lists.

Once you know what you need, look into:

• Account ownership and instant verification: Confirming the person connecting the account owns it, and pulling routing and account numbers directly rather than relying on manual entry or microdeposits.

• Balance checks: Confirming, at the moment of a transaction, the account has enough funds to cover it, which matters most for anyone initiating a debit and trying to reduce failed payments.

• Identity verification: Matching the name, address, and other details on the bank account against the identity information the customer provided elsewhere in your flow, useful for fraud prevention and onboarding checks.

• Transaction history and income data: Pulling a window of past transactions to support underwriting, income verification, or personal finance features, which is the category in which providers often vary most in how far back they can pull and how cleanly they categorise it.

What integration details matter when choosing an open banking provider?

Integration complexity affects your time to market, so it’s important to examine what integration will really look like before signing with a provider.

Consider these factors when you go to choose an open banking provider:

• Hosted connection flow: A prebuilt user interface (UI) for the bank search, login, and consent screens saves engineering time and can convert better than a custom-built flow because providers have usually already tested edge cases such as a bank that isn’t on the list.

• Customisation limits: Hosted components come with less control over branding and sequencing. If you’ve got a tightly designed onboarding process, check how much the provider lets you adjust before assuming the drop-in flow will fit.

• Software development kit (SDK) quality: Pull the SDK for whatever stack you’re using, check the last few release notes, and see how recently it has been updated. A provider with current SDKs and clear error messages saves time during setup and during the debugging that happens after launch.

• Time to production: If possible, ask current customers how long it took them to go from signed contract to live traffic.

How do you assess reliability, security, and compliance in an open banking provider?

Uptime matters more with open banking than with most vendor categories. A bank-connection failure blocks a customer at the exact moment they’re trying to give you money or sign up for a financial product.

The right questions to ask probe what went wrong when things broke:

• Uptime history: Ask for historical uptime data, not just a target percentage, along with specifics on incidents over the past year, what broke, how long it took to fix, and how customers were notified.

• Data retention: Ask how long the provider holds on to the bank data it pulls and whether you can configure shorter retention windows for your use case.

• Consent management: Check whether the provider makes it clear to users what data is being shared and why and whether consent is easy for a customer to revoke.

• Regulatory readiness: Open banking data-access rules are evolving in several markets, including the US. Ask how a provider tracks and adapts to new requirements in the regions where you operate.

Stripe Financial Connections is one option worth measuring against these questions. It offers direct bank connections built for developers already working within Stripe’s tools, with real-time balance and transaction data access and a hosted connection flow that drops into an existing signup or payment setup.

How Stripe Financial Connections can help

Stripe Financial Connections is a set of APIs that allows you to securely connect to your customers' bank accounts and retrieve their financial data, enabling you to build innovative financial products and services.

Financial Connections can help you:

• Simplify onboarding: Offer a seamless, instant bank account verification process that does not require manual identity and account verification.

• Access rich financial data: Retrieve comprehensive information about your customers' bank accounts, including balances, transactions and account details.

• Automate recurring payments: Enable your customers to securely link their bank accounts for recurring payments, improving payment success rates.

• Enhance risk management: Analyse customers' financial data to make more informed decisions about credit, lending and other financial products.

• Comply with regulations: Financial Connections helps you meet Know Your Customer (KYC) and Anti-Money Laundering (AML) requirements.

• Innovate with confidence: Build new financial products and services on top of the secure, reliable Financial Connections infrastructure.

Learn more about Financial Connections or get started today.