Top 10: Banking-as-a-Service Providers

Banking-as-a-Service (BaaS) has revolutionised the financial landscape by enabling non-banking entities to offer financial products without building infrastructure from scratch. 

Through API integration, businesses can embed banking capabilities—from payment processing to account management—directly into their platforms. 

This democratisation of financial services has spurred innovation, allowing brands to enhance customer experiences while generating new revenue streams. 

As regulatory frameworks evolve, BaaS platforms increasingly bridge the gap between traditional banking and emerging digital ecosystems.

Here, Fintech Magazine looks at the top 10 BaaS providers globally.

10. Griffin

CEO: David Jarvis
Headquarters: London, UK
Founded: 2017

Griffin operates as a UK-based BaaS provider with its own full UK banking licence, specifically targeting fintechs and brands seeking embedded finance solutions. Led by co-founder and CEO David Jarvis, its comprehensive full-stack platform delivers APIs for embedding verified bank accounts (including safeguarding features), accessing UK payment schemes and managing KYC/AML compliance requirements. Griffin aims to fundamentally simplify the process of launching financial products by providing regulated infrastructure and technology directly to clients. The company distinguishes itself through its purpose-built approach to financial infrastructure, combining modern technology with direct regulatory authorisation to serve the growing embedded finance marketplace.

9. Railsr

CEO: Philippe Morel
Headquarters: London, UK
Founded: 2016

Railsr delivers an embedded finance platform providing BaaS and Cards-as-a-Service via comprehensive APIs, primarily serving businesses throughout Europe and Asia regions. Under CEO Philippe Morel's leadership, its offerings encompass embedded banking (accounts/wallets), card issuing capabilities, payment processing solutions and essential compliance tools. Railsr enables fintech companies and established brands to seamlessly integrate financial components into their existing product ecosystems. Following some financial challenges, the company underwent acquisition and recapitalisation in 2023, which positioned the organisation to rebuild momentum in the competitive BaaS marketplace. Their focus remains on delivering flexible financial infrastructure to power next-generation financial experiences.

8. Treezor

CEO: André Gardella
Headquarters: Paris, France
Founded: 2016

Treezor functions as a leading European BaaS provider operating as part of the respected Societe Generale group. With operations based on an EMI licence passported across 25 European countries, it delivers API-driven payments infrastructure, e-wallet solutions, card issuance capabilities, SEPA transaction processing and comprehensive KYC/compliance systems. Under André Gardella's leadership as CEO, Treezor specialises in enabling financial institutions, neobanks and various businesses to rapidly launch scalable embedded payment solutions throughout the European continent. The company leverages its banking group relationship to combine regulatory credibility with technical innovation, positioning itself as a trusted partner for enterprises seeking reliable payment infrastructure.

7. 10x Banking

CEO: Antony Jenkins
Headquarters: London, UK
Founded: 2016

10x Banking provides a sophisticated cloud-native SaaS core banking platform called SuperCore®, specifically designed to help established banks modernise their legacy systems and efficiently launch new digital propositions for retail, SME and corporate clients alike. Founded by former Barclays CEO Antony Jenkins, the company's API-first architecture facilitates effective BaaS models, enabling banks and their partners to embed services and integrate systems with unprecedented efficiency. The platform currently powers major banking operations including Chase UK and Westpac, demonstrating its enterprise-grade capabilities. 10x Banking represents a significant force in core banking transformation, applying modern technology principles to traditional banking infrastructure challenges.

6. ClearBank

CEO: Mark Fairless
Headquarters: London, UK
Founded: 2015

ClearBank operates as a UK-based cloud-native clearing and embedded banking provider while maintaining status as a fully regulated banking institution. Under CEO Mark Fairless's direction, it offers direct API access to all major UK payment schemes (including Faster Payments, Bacs and CHAPS) alongside FSCS-protected accounts for ultimate security. ClearBank primarily serves fintech companies, established banks and regulated financial institutions requiring real-time clearing capabilities or embedded banking solutions, leveraging its purpose-built infrastructure and valuable banking licence. The company has established itself as an important infrastructure provider within the UK financial ecosystem, focusing exclusively on providing banking services to regulated financial service providers rather than competing in retail markets.

5. Solaris SE

CEO: Carsten Höltkemeyer
Headquarters: Berlin, Germany
Founded: 2016

Solaris SE functions as a prominent European embedded finance platform operating with a complete German banking licence. Under CEO Carsten Höltkemeyer's leadership, it provides highly modular BaaS solutions via sophisticated APIs, including accounts, cards, lending products, digital assets and comprehensive compliance services for regulatory certainty. Solaris primarily targets fintech enterprises and corporations across multiple European markets, emphasising its considerable regulatory expertise as a key differentiator. Despite experiencing certain financial challenges recently, the company successfully secured new funding rounds and importantly onboarded the major ADAC credit card programme, demonstrating continued market relevance. Their European banking licence enables them to passport services across the continent.

4. Green Dot

CEO: William I Jacobs (Interim)
Headquarters: Austin, TX, USA
Founded: 1999

Green Dot operates as a substantial US financial technology company and bank holding corporation offering comprehensive BaaS capabilities via its sophisticated Arc platform. The company effectively enables various partners, including large technology firms and fintech startups, to provide branded banking products (accounts and cards), payment processing infrastructure, money movement capabilities (including valuable cash network access) and specialised payroll/tax solutions. Green Dot strategically leverages its integrated bank charter and extensive retail distribution network as key competitive assets in the market. Under Interim CEO William I Jacobs's guidance, the company continues building upon its two-decade legacy in financial services while adapting to contemporary embedded finance requirements.

3. Mambu

CEO: Fernando Zandona
Headquarters: Amsterdam, Netherlands
Founded: 2011

Mambu offers a leading SaaS, cloud-native core banking platform specifically engineered for maximum composability and flexibility in financial service delivery. Its sophisticated API-driven architecture enables banks, fintech companies and various financial institutions globally to rapidly build and efficiently deploy diverse financial products, including deposit accounts, lending solutions (such as Buy Now, Pay Later) and digital wallets, effectively facilitating Banking-as-a-Service use cases. Under Fernando Zandona's leadership as CEO, Mambu particularly emphasises speed-to-market advantages and scalability benefits for clients modernising existing systems or launching entirely new digital financial services. The company has established itself as a significant global player in financial infrastructure modernisation.

2. Marqeta

CEO: Mike Milotich (Interim)
Headquarters: Oakland, CA, USA
Founded: 2010

Marqeta operates as a global leader specialising in modern card issuing technology, providing an advanced API-first platform enabling businesses to create, manage and scale physical, virtual and tokenised card programmes with unprecedented flexibility. Currently serving fintech innovators, digital banks and large enterprises across more than 40 countries worldwide, Marqeta enables sophisticated features including dynamic spend controls and Just-in-Time funding mechanisms. Under Interim CEO Mike Milotich's guidance, the company maintains sharp focus on delivering exceptionally flexible payment solutions for emerging use cases including Buy Now, Pay Later services and comprehensive embedded finance applications. Their platform powers many of the most recognised fintech card programmes globally.

1. Starling Bank (Engine by Starling)

CEO (Engine): Sam Everington
Headquarters: London, UK
Founded: 2014 (Engine launched 2022)

Engine by Starling functions as the dedicated Software-as-a-Service division of prominent UK digital bank Starling, offering its proprietary, cloud-native core banking platform to financial institutions and various businesses worldwide seeking modern banking infrastructure. Led by CEO Sam Everington, Engine enables client organisations to launch their own branded banking services—including accounts, payments and card products—utilising Starling's proven, highly modular technology accessed through comprehensive APIs. The division specifically targets firms seeking a modern, inherently scalable platform, effectively leveraging the same battle-tested technology that powers Starling Bank's own successful operations. As part of an established digital bank, Engine benefits from practical implementation experience rather than purely theoretical capabilities.

Explore the latest edition of FinTech Magazine and be part of the conversation at our global conference series, FinTech LIVE. 

Discover all our upcoming events and secure your tickets today.

FinTech Magazine is a BizClik brand