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Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Starling Bank is targeting US mid-sized banks, community banks and credit unions with Engine, its business-to-business banking software platform—not launching a Starling consumer bank account in the United States. Starling formed a US subsidiary for the effort in April 2025. By May 2026, it had announced a 10-year Engine agreement with Canadian bank Tangerine, its first North American client; that milestone does not establish a US bank customer.
What Starling is offering in the US
Engine is Starling’s proprietary banking platform, sold as software as a service (SaaS) to financial institutions. The platform launched in the UK in 2018 and was rebadged as Engine in 2022. Starling says it is aimed at banks that want to build or expand digital services without developing all the underlying technology themselves. The 2025 report described the US target as mid-sized banks, community banks and credit unions; that is Starling’s stated market rationale, not evidence that all or most of those institutions are seeking Engine.
The US move is therefore an enterprise-software expansion, not evidence that US residents can open a Starling-branded checking account. Starling’s FY25 annual report records that Engine by Starling Services US LLC was formed in Delaware on 2 April 2025. Formation of a subsidiary establishes a corporate presence, but does not by itself show which US institutions it serves or the extent of its operating footprint.
How Engine fits into banking and embedded finance
A bank can use a software platform to support digital banking services, while a non-bank business may work with a bank to offer financial features such as credit, loans or debit cards to its own customers. In an embedded-finance arrangement, the technology provider, the business presenting the product and the regulated bank can be different parties. Providing software does not, by itself, make the software company the bank, lender or regulator. The responsibilities depend on the specific arrangement and regulated institution involved.
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Starling’s Engine business predates the US push. Computer Weekly reported that Raisin was its first banking-as-a-service customer and that Engine had customers in Europe and Australia. Starling’s FY26 announcement describes it as a global SaaS banking platform. Those statements establish prior international activity, but do not identify a US banking customer.
What Starling’s reported progress shows—and does not show
In its May 2026 FY26 announcement, Starling reported that Engine revenue grew 25%, its client base doubled and it had £70 million in committed annual recurring revenue. These are company-reported business figures, not independently verified measures of market share. The company also said that Canadian bank Tangerine signed a 10-year agreement with Engine, making Tangerine its first client in North America. Canada is in North America, but the announcement does not make Tangerine a US customer or confirm that Engine had signed a US bank by that date.
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The distinction matters because corporate expansion, regional customer growth and US customer acquisition are separate milestones. On the evidence announced by May 2026, Starling had established a US subsidiary and secured a Canadian client; a US bank customer is not identified.
Why US bank-fintech partnerships are a plausible route
Cross-border partnerships provide context for Starling’s approach, but examples involving other companies should not be mistaken for Engine contracts. A UK Department for International Trade and LendIt Fintech report discussed the preparation, alignment and partnership-cycle challenges involved in working with US banks. Its September 2020 LendIt Fintech Bankers Survey found that 58% of surveyed senior US bankers viewed fintech partnerships as a proven part of their execution strategy, while 84% said they were willing or eager to engage with a UK-based fintech. Those are historical survey results, not a measure of US banker sentiment in 2026.
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The report described WebBank as issuer and lender for a small-business credit-card product developed with UK digital lender Capital on Tap, which supplied technology. It also discussed OakNorth’s credit-analysis work with Customers Bank. These examples show that partnership models can divide roles between a regulated bank and a technology or product company; they do not establish that Starling has a comparable US agreement.
A March 2026 Cross River announcement offers a more recent example from another provider: Cross River said it would supply banking services, including BIN sponsorship, ACH capabilities and compliance oversight, while Thredd provides processing technology. B4B Payments was identified as the first customer to go live under that collaboration. This is not a Starling or Engine arrangement, but it illustrates that bank-fintech infrastructure deals may combine multiple providers and distinct responsibilities.
Computer Weekly also relayed a Research and Markets estimate that the global banking-as-a-service market was $29.5 billion in 2024 and could reach $74.8 billion by 2030, implying annual growth of 16.8%. This is a third-party market estimate cited in 2025, not a Starling-specific addressable-market figure, and its methodology is not established here.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Digital banking still requires strong financial-crime controls
Technology can help banks deliver digital services, but expansion does not remove the need for effective controls. The Financial Conduct Authority’s 2022 publication, based on work conducted in 2021, reviewed a sample of six relatively new challenger retail banks covering more than eight million customers. It found weaknesses at some reviewed firms involving customer risk assessments, information collection, enhanced due diligence and management of transaction-monitoring alerts. It also observed innovative uses of technology for customer identification and verification.
The FCA said the inherent financial-crime risks at the reviewed challenger banks were not materially different from those at traditional retail banks. Its findings concern that historical sample, not Engine or Starling’s US subsidiary. The regulator’s expectation was that “financial crime control resources, processes and technology” should be commensurate with a bank’s expansion. For any bank adopting new software, the relevant question is not just what the platform can automate, but whether the institution’s controls, staffing and oversight remain adequate as services and customers grow.
Quick Recap
What to watch next
- A named US customer: A US subsidiary and a Canadian client are not proof of a US bank deployment.
- The role split in any deal: Public details should clarify which party supplies software, holds the relevant regulated role and manages operational controls.
- Evidence beyond company targets: Starling’s reported growth indicates progress for Engine overall, but does not establish US market share or customer demand across the targeted bank categories.
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