Banking as a Service (BaaS)

What it is, how it works, and how to compare providers. A practical guide to BaaS platforms in 2026.

When people search for banking as a service (or BaaS), they're usually looking for one of two things: a clear definition of what it is, or a concrete list of providers they can evaluate. This guide covers both.

What is Banking as a Service?

Banking as a Service (BaaS) is a model where licensed banks expose their core banking infrastructure—accounts, payments, cards, lending, and compliance—via APIs so that non-bank companies can embed financial products directly into their own platforms. The bank holds the license and handles regulatory requirements; the BaaS client builds the customer-facing experience.

In practice, this means a fintech, marketplace, or vertical SaaS company can offer branded checking accounts, debit cards, or lending—without obtaining a banking charter—by integrating with a BaaS provider that connects them to a licensed bank. The bank provides FDIC insurance (US), safeguarding (UK), or equivalent; the BaaS platform provides the API layer and often compliance tooling.

What Do Banking as a Service Providers Do?

BaaS providers typically offer some or all of the following:

  • Deposit accounts — FDIC-insured (US) or safeguarded (UK/EU) accounts via API
  • Card issuing — Virtual and physical debit/credit cards with real-time controls
  • Payments — ACH, wire, SEPA, instant payments, and book transfers
  • Lending — Credit lines, installment loans, or commercial lending APIs
  • Compliance tooling — KYC, AML, transaction monitoring, and onboarding

They sit between your platform and the bank: you integrate with their APIs; they manage the bank partnership, regulatory interface, and often core processing.

Leading Banking as a Service Providers by Region

Below is a snapshot of well-known banking as a service providers by focus region. The right choice depends on your geography, use case, and technical needs.

United States & North America

  • UnitAll-in-one BaaS platform with accounts, cards, and lending. Strong for fintechs and vertical SaaS.
  • Stripe TreasuryFDIC-insured accounts and card issuing for platforms. Integrates with Stripe ecosystem.
  • Treasury PrimeMulti-bank BaaS with bank selection flexibility. Strong for fintechs and banks.
  • SyncteraConnects fintechs with community banks. End-to-end BaaS with compliance tools.
  • ColumnNationally chartered bank built for developers. Direct bank access without BaaS middlemen.

UK

  • GriffinUK BaaS with full banking license from PRA/FCA. API-first with direct Bank of England access.
  • ClearBankClearing and embedded banking infrastructure. Powers many UK neobanks and fintechs.
  • RailsrEmbedded finance platform with UK and European coverage. Accounts, cards, and compliance.

Europe (EU)

  • SolarisEuropean BaaS with full banking license. Accounts, cards, lending, and crypto across the EU.
  • SwanEuropean embedded banking. White-label IBANs, cards, and SEPA payments across the EU.
  • TreezorOwned by Société Générale. Regulated payment accounts, cards, and SEPA for fintechs.

For a searchable directory with developer portals, geographic filters, and provider profiles, see the BaaS Providers directory, which compares 20+ banking as a service platforms in one place.

How to Compare Banking as a Service Providers

When comparing banking as a service providers, focus on these dimensions:

  1. GeographyWhich countries and regions do they support? Ensure they cover your target market.
  2. Bank partnersQuality and stability of sponsor banks. Some offer single-bank; others multi-bank flexibility.
  3. Product breadthAccounts only, or also cards, lending, payments? Match to your use case.
  4. Compliance supportKYC, AML, and onboarding tooling. Built-in or bring your own?
  5. PricingPer-account, per-transaction, platform fees. Model total cost at your scale.
  6. Developer experienceDocumentation, sandbox, SDKs. Critical for integration speed.

A detailed comparison table is available on the BaaS Providers page, including developer portal links and target markets.

Banking as a Service vs. Embedded Finance

BaaS is a subset of embedded finance. BaaS focuses specifically on regulated banking products—deposits, accounts, and cards issued by a licensed bank. Embedded finance is the broader category that includes BaaS plus non-bank services like card issuing without a bank (e.g. Marqeta, Lithic), payments, lending, AP/AR, compliance, and more.

Many providers offer both: Unit and Stripe Treasury are BaaS platforms that also offer card issuing. For the full embedded finance ecosystem—BaaS, card issuing, lending, payroll—see the Embedded Finance directory.

Related Resources

BaaS Providers DirectoryCompare 20+ Banking as a Service platformsEmbedded Finance DirectoryBaaS, card issuing, lending, and moreWhat is BaaS? (Q&A)Short definition and overviewCard Issuing ProvidersCard APIs for fintechs and platforms

Banking as a Service FAQ

Banking as a Service (BaaS) is a model where licensed banks expose their core banking infrastructure—accounts, payments, cards, lending—via APIs so non-bank companies can embed financial products directly into their own platforms. The bank holds the license and handles regulatory requirements; the BaaS client builds the customer-facing experience. BaaS enables fintechs, marketplaces, and vertical SaaS to offer branded accounts, cards, and payments without obtaining a banking charter.

Compare BaaS Providers

Explore our directory of Banking as a Service providers with developer portals, geographic coverage, and detailed profiles.