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Core banking and payments technology

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  • What is a Core Banking System? 7 Key Features
  • What are Legacy Core Banking Systems? The Complex Nightmare
  • What are the key advantages of using a SaaS cloud-based banking system? Top 7 reasons why to avoid developing your own
  • Is using an open-source technology in core banking software development safe and secure? 
  • What are the advantages of using an open-source database in modern cloud-based whitelabel bank software? 
  • What advantages RESTful API has over SOAP API?
  • How does the use of GraphQL Federation enhances RESTful APIs?
  • Key principles and advantages of the microservices architecture in payment software solutions
  • What are the benefits of integrating container and orchestration technologies such as Docker and Kubernetes into the deployment of cloud-based software for bank systems?
  • What are the typical security measures undertaken by the cloud core banking systems developers to address the security concerns of financial institutions?
  • What is required of the SaaS cloud-based core banking software to enable the financial institutions to provide banking as a service or a superapps?
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Regulations and compliance

15
  • What Is Confirmation of Payee?
  • What Is Verification of Payee?
  • What is PCI DSS? The best explanation
  • What are the key concerns when choosing the core banking system from the perspective of regulatory compliance?
  • What is Open Banking, and why do banks, payment institutions and e-money institutions in the EU must publish Open Banking API?
  • What is strong customer authentication (SCA) regulatory technical standard (RTS)?
  • Can push notifications be considered compliant with SCA RTS?
  • Why is it important to use multi-factor authentication (MFA) when accessing a cloud-based core banking system?
  • Why is it essential to have comprehensive user management in the banking software?
  • Why is it important for the modern cloud-based core banking system to be built around a general ledger and have a chart of accounts?
  • Is it possible to obtain necessary information for regulatory reporting if an institution uses a core banking system with no general ledger and chart of accounts?
  • Why is there a need for customer risk scoring and transaction risk scoring?
  • Why is it ineffective or even dangerous to outsource the risk scoring from a third party without having it as a part of the cloud-based core banking software?
  • What is DORA (Digital Operational Resilience Act)?
  • What is safeguarding in payments, and why is it required?
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Banking, payments, and e-money

21
  • What is payment initiation service, and how it can be used?
  • What is a banking superapp and what does it offer?
  • What is Banking as a Service, or BaaS?
  • What is an Account Servicing Payment Service Provider?
  • Who are Third-Party Providers (TPPs), and what is their role?
  • What is Account Information Service, and how it can be used?
  • What is Original Credit Transaction (Visa and Mastercard) and how is it used in payments?
  • What is SEPA, and what types of payment transactions it facilitates?
  • What is Step2 and what types of payment transactions it supports?
  • What is Target2, and what types of payment transactions it supports?
  • What is Faster Payments (UK), and what types of payment transactions it supports?
  • What is Bacs, and what kind of payments it supports?
  • What is NACHA (USA), and what types of payments it supports?
  • What is SWIFT, and what types of payments it supports?
  • What is a correspondent bank, and what is its role in payments?
  • What is a ledger-centric architecture in core banking systems?
  • What is the difference between a core ledger and a payments ledger?
  • How does event-driven architecture work in payment platforms?
  • What is the role of message queues in payment systems?
  • How do core banking systems achieve high availability and fault tolerance?
  • How does multi-tenant architecture vs single tenant in SaaS core banking platforms compare?
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  • What is Banking as a Service, or BaaS?

What is Banking as a Service, or BaaS?

5 min read

what is banking as a service Baseella explanation

Banking as a Service (BaaS) is a model in which a licensed bank or e-money institution enables its core banking infrastructure, regulatory permissions, and payment processing capabilities to third-party businesses through APIs (Application Programming Interfaces). This allows non-banking entities to embed regulated financial services – such as current accounts/e-wallets opening, card issuance, and payments – directly into their own platforms or products, without needing to build banking infrastructure from scratch or hold their own banking or e-money licence. The BaaS provider handles the underlying regulatory compliance and infrastructure; the non-banking entity handles the customer relationship and product experience.

As illustrated in a typical BaaS integration flow, a non-banking business connects to a BaaS provider’s API layer, which sits on top of the provider’s licensed banking or e-money infrastructure. When an end customer interacts with the non-banking entity’s product – opening an account, making a payment, or requesting a card – the request is processed through the BaaS provider’s core banking system and settled via the relevant payment rails. The end customer experiences the service under the non-banking entity’s brand, while the BaaS provider operates as the regulated entity in the background.

Key Takeaways #
  • Banking-as-a-Service (BaaS) is a model in which licensed banks or e-money institutions provide access to their core banking infrastructure, regulatory licences, and payment capabilities to non-banking businesses via APIs
  • BaaS enables non-banking entities – such as fintechs, retailers, or technology platforms – to embed financial services into their own products without obtaining their own banking licence
  • Common BaaS-powered services include branded payment accounts, card issuance, money transfers, currency exchange, and lending, all delivered under a third party’s brand via white-labeled infrastructure

Core Capabilities Banking as a Service (Baas) Enables #

Access to Core Banking Services: BaaS gives non-banking entities access to fundamental banking capabilities – including payment account opening, domestic and international money transfers, card issuance, and currency exchange – through a single API integration. This eliminates the need to build or maintain the underlying banking infrastructure independently, significantly reducing time to market and operational complexity.

Regulatory Compliance and Licencing: One of the primary advantages of the BaaS model is that the regulatory burden is carried by the licenced BaaS provider. The provider holds the necessary banking or e-money institution licence, meets applicable regulatory requirements – including PSD2, AML, and KYC obligations – and ensures the services delivered through its infrastructure remain compliant. Non-banking entities operate within this regulatory framework without needing their own licence, though they remain responsible for their customer-facing compliance obligations.

White-Label Customisation and Branding: BaaS platforms typically offer white-label capabilities, enabling non-banking entities to customise the user interface, branding, and customer experience of the financial services they deliver. This allows businesses to present banking services – such as a branded payment card or a named current account – as a native part of their own product, maintaining a consistent brand identity across all customer touchpoints.

Scalability and Cost Efficiency: Because BaaS providers operate shared banking infrastructure across multiple clients, non-banking entities can scale transaction volumes and expand their financial service offering without making the capital investments typically associated with building proprietary banking infrastructure. This makes BaaS particularly attractive for early-stage fintechs and established businesses entering financial services for the first time.

Innovation and Speed to Market: BaaS allows non-banking entities to focus on product development, customer acquisition, and user experience – their core competencies – while relying on the BaaS provider for banking infrastructure and regulatory coverage. New financial features or services can be introduced rapidly through API-based integrations, without waiting for internal infrastructure buildout or regulatory approvals.

FAQ: #

What types of businesses use BaaS?

  • BaaS is used by a wide range of businesses including fintech startups building neobank or payments products, e-commerce platforms embedding payment accounts or cards, telecoms and retailers offering branded financial services, and software companies adding financial features to existing business tools. Any business seeking to offer regulated financial services without obtaining its own banking licence is a potential BaaS user.es

What is the difference between BaaS and open banking?

  • Open banking refers to the regulatory requirement for banks to share customer account data and enable payment initiation through standardised APIs, primarily governed by PSD2 in Europe. BaaS is a commercial model in which a bank or e-money institution provides its full banking infrastructure – including licences, payment rails, and core banking capabilities – to third parties for the purpose of building financial products. Open banking is about data and payment access; BaaS is about infrastructure and licence access.
  • The ability to offer essential banking services such as account opening, money transfers, card issuance, and currency exchange operations can be a significant game-changer for non-banking entities. With BaaS, they can swiftly integrate these capabilities, saving time, money, and effort that would otherwise be spent on building a similar structure from scratch.

BaaS serves as a bridge, allowing non-banking entities to lean on the established infrastructure and expertise of their banking partners. This level of collaboration ensures seamless service delivery, providing a rich banking experience to their customers, regardless of the non-banking entity’s core business.

Baseella has built-in capabilities and robust APIs to the creation of your own BaaS offer and providing this to the wider public. Reach out to us today to learn how you can achieve that and put your BaaS solution to the test.

Updated on April 7, 2026
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