Open banking has moved from a buzzword to a backbone for much of the financial software. If you’re building an accounting tool, payroll platform, or B2B SaaS product, you need a way to pull real-time bank data or move money without building a banking relationship from scratch. The question isn’t whether you need an open banking provider anymore. It’s which one fits how your platform actually works.
Some providers focus on broad geographic coverage. Others prioritize infrastructure scale or a single flagship feature. The eight platforms below take different approaches to the same underlying problem: connecting your software to bank accounts and payment rails safely and quickly. Here’s how they stack up.
Best for Fast, UK-Focused Onboarding – Finexer
Finexer is an open banking platform built for businesses that need payment processing and access to bank data without managing two separate vendor relationships. It combines account information services (AIS) and payment initiation services (PIS) into one integration, giving you one contract, one API, and one support line instead of forcing you to stitch together a data provider and a payments provider separately.
That combination also makes it 2 to 3 times faster to go live than running separate integrations, according to the company. You aren’t left to figure out onboarding on your own, either. Finexer’s own team runs a hands-on onboarding process lasting 3 to 5 weeks from start to finish, with sandbox access typically agreed on the first call. Technical teams have also described the API and OAuth integration as straightforward to work with.
The platform provides a single point of access to thousands of banks and bank accounts via its API, allowing you to accept online payments at low fees and retrieve high-quality, real-time data on user balances and transactions. Unlike providers that resell access through a third party, Finexer holds its own one-to-one AIS and PIS integration directly with each bank. That matters if your platform depends on stable bank connections.
Coverage runs deep across UK high street and challenger banks, as well as business accounts, with transaction history dating back up to 7 years, depending on the bank. That makes it useful if you’re building accounting, payroll, proptech, or B2B SaaS software that needs a longer financial picture rather than a simple snapshot.
The consent and payment flow can also carry your own branding rather than dropping your users onto a visibly third-party page. That’s a fitting profile if you’re running a growth-stage platform and want more than a bare-bones API without taking on the commercial overhead of an enterprise-only provider.
Best for API Infrastructure at Scale – Yapily
Yapily positions itself as an Open Banking API Infrastructure Platform, and that’s the right way to think about it. If you’re building a fintech product, you can use it as the plumbing layer that your application sits on top of rather than treating it as a consumer-facing payments brand.
Pricing packages are set up to scale with your business, with a free tier to get started and what the company describes as flexible, transparent pricing with no hidden fees. That structure gives you a way to test an integration before committing, particularly if you’re working with a smaller team.
The tradeoff is that you’re building on top of an infrastructure layer rather than getting a finished payments product out of the box. If you need more control over your technical stack, that may be exactly what you want. If you’re looking for something more turnkey, you’ll need to weigh that flexibility against the additional work involved.
Best for Pan-European Bank Coverage – Tink
Tink is a European open banking platform that connects to over 6,000 banks and institutions across the continent through a single API. If your customers or bank relationships are spread across Europe, that connection count can be a major advantage. You also get enriched, categorized financial data rather than raw feeds that you have to clean up yourself.
The catch is that Tink’s strength is explicitly European. If your customers or banking relationships sit primarily outside that footprint, you’ll find the platform less relevant. Before choosing it, make sure its geographic coverage lines up with where your users actually bank.
Best for Global Payments Infrastructure – Mastercard
Mastercard describes itself as a global technology company in the payments industry, connecting and powering a digital economy that makes transactions safe, simple, and accessible for people, businesses, and governments.
If you’re comparing open banking providers, this is a different kind of option. Mastercard is less of an open banking specialist and more of a payments infrastructure giant that open banking products can increasingly plug into.
Given its scale, you’re more likely to encounter Mastercard behind other financial products than as a direct plug-and-play open banking API for your growth-stage SaaS platform. If you need a dedicated open banking integration, you’ll want to compare its offerings carefully with those from providers built specifically for that use case.
Best for Developer-Friendly Fintech Building – Plaid
Plaid frames its mission around enabling companies to build fintech solutions while making it easy, safe, and reliable for people to connect their financial data to apps and services. If you’re a developer building a consumer-facing financial product, it’s one of the more widely recognized names in this space.
The tradeoff with a broad, developer-first platform is that you’re working with a provider designed to serve a wide range of fintech use cases rather than one that specializes narrowly in a specific vertical. If your product has unusual requirements related to accounting, payroll, or other specialized workflows, you’ll want to make sure the platform covers them before committing.
Best for Worldwide Bank Connections – Salt Edge
Salt Edge calls itself a Global Open Banking and Open Finance Platform. It connects to 5,000+ banks worldwide and combines data aggregation with open banking payments and compliance tools on a single platform.
If your product serves users across multiple markets, that global reach is the headline feature. You can work with a broader geographic footprint instead of selecting a provider based on a single banking system.
The tradeoff is that you’re choosing a platform designed to work broadly across markets rather than one tuned specifically to the quirks of a single regional banking system. If you only operate in one country, a more specialized provider may be a better fit.
Best for Bank-Side Data Strategy – MX Technologies
MX Technologies positions itself as the number one financial data platform, aimed at helping financial institutions convert data into deposits, loans, and lifetime customer value.
If you’re running a bank or credit union, this is a different proposition from what most of the other providers on this list offer. The platform is built more to help you strengthen relationships with your own account holders than to help a SaaS company integrate bank data into its product.
That focus makes MX a stronger fit if you’re a financial institution looking to make better use of your customer data. If you’re building accounting or payroll software, you’ll likely find other providers on this list more directly aligned with your needs.
Best for API and AI Connectivity Infrastructure – Kong
Kong calls itself the AI Connectivity Company, describing its platform as the fabric of modern connectivity for securing, governing, and scaling API, AI, MCP, and agent gateways.
If you’re looking at Kong for an open banking project, you’re considering a broader infrastructure play rather than a dedicated open banking product. That can make sense if your platform already needs robust API and AI connectivity across multiple systems.
Because Kong focuses on API and AI connectivity in general rather than open banking specifically, you won’t get bank data or payments integration simply by choosing it. If that’s the specific job you’re trying to solve, a provider built around open banking will likely be a more direct fit.
Which One Is Right for You
The right pick depends on what you’re building and where your users bank. If you’re developing a pan-European product with heavy cross-border data needs, you might lean toward Tink’s number of connections. If you’re building broad consumer fintech tools and have the developer resources to work with a flexible platform, Plaid could make sense.
If you’re running a bank or credit union and want to deepen your account holder relationships, MX Technologies is closer to your needs. If your business already relies heavily on API infrastructure, you might start with Yapily, Salt Edge, or Kong depending on which layer you need.
For a UK-focused accounting, payroll, proptech, or B2B SaaS platform, Finexer stands out if you want to launch quickly without managing separate vendors for data and payments. Combining AIS and PIS into a single integration, backed by direct one-to-one bank connections and hands-on onboarding measured in weeks rather than months, is difficult to overlook if speed to launch and UK bank coverage matter most to your roadmap.
Your users may also move between newer payment rails and older ones depending on the transaction. A customer who normally pays digitally may still need to handle a paper check, for example, where factors such as mobile deposit limits, processing times, fees, and availability can affect which check-cashing apps are practical. Those details may seem separate from open banking, but they point to the same underlying challenge: your payment infrastructure has to work around how people actually manage money, not just how you expect them to.
That’s ultimately what should guide your choice. The best provider isn’t the one with the biggest bank count or the longest feature list. It’s the one that fits your users, your markets, and the payment experience you’re actually trying to build.
