Miami • Florida

Why the open banking market is projected to reach USD 135.2 billion by 2030

The global open banking market was valued at USD 32.5 billion in 2024 and is projected to reach USD 135.2 billion by 2030, growing at a CAGR of 26.9%, according to Grand View Research. The broader fintech market is projected to exceed USD 340 billion by 2027, driven by the rapid adoption of digital banking, embedded finance, and open finance frameworks across Latin America and the US. Miami has emerged as a strategic fintech hub, connecting US financial markets with Latin American innovation, and open finance is at the center of this convergence. According to Accenture, open banking initiatives have the potential to unlock USD 416 billion in new revenue for the global banking industry by 2027 through new products, customer acquisition, and operational efficiencies. For Miami-based fintechs and financial institutions, building open finance capabilities is no longer optional; it is the foundation for competing in an increasingly interconnected financial ecosystem.

The cost of staying closed in an open finance world

Financial institutions that rely on legacy core banking systems and proprietary APIs are increasingly at a competitive disadvantage. According to McKinsey, digital-native fintechs acquire customers at 5 to 10 times lower cost than traditional banks, driven largely by their ability to leverage open finance data aggregation and API ecosystems. For Miami banks and credit unions serving the growing Hispanic market, the inability to offer account aggregation, instant payments, or embedded finance capabilities directly impacts customer acquisition and retention. Industry data shows that 65 percent of consumers now expect to be able to share their financial data with third-party providers, and 47 percent have already switched financial providers because the digital experience did not meet their expectations. The regulatory environment is also shifting: the CFPB's Section 1033 open banking rule, finalized in 2025, requires US financial institutions to make consumer financial data available through standardized APIs, creating a compliance deadline that institutions cannot ignore.

What open finance and fintech development services cover

Open finance is not a single product; it is an ecosystem of capabilities spanning API development, data aggregation, compliance, security, and integration that together enable the secure, consent-based sharing of financial data between institutions, fintechs, and consumers.

• Open banking API development: Building secure, standards-compliant APIs that enable financial data sharing between banks, fintechs, and third-party providers using frameworks such as FDX (Financial Data Exchange), FAPI (Financial-grade API), and regional open banking standards. APIs are designed with OAuth 2.0 and OpenID Connect for secure consent management, granular data permissioning, and audit trails that satisfy regulatory requirements for consumer data access and sharing.
• Fintech platform development: Designing and building custom digital banking, lending, payment, and investment platforms that integrate with core banking systems through open APIs and provide the modern digital experience that consumers expect. Fintech platforms built on open architecture can be extended with new products and services without the months of development required to modify legacy monolithic banking systems.
• Data aggregation and enrichment: Building data aggregation infrastructure that securely collects financial data from multiple sources, normalizes it into a consistent format, and enriches it with analytics and insights that power personal financial management tools, credit decisioning, and product recommendation engines. Data aggregation is the technical foundation that enables the personalized financial experiences that drive user engagement and retention.
• Regulatory compliance and security: Implementing the compliance and security framework that satisfies PCI-DSS, SOC 2 Type II, GLBA, CCPA, and the CFPB Section 1033 requirements. Compliance in open finance is non-negotiable, and the regulatory landscape is evolving rapidly. We build compliance into the architecture from the first design decision rather than treating it as a post-development audit that requires expensive retrofitting.
• Integration with legacy banking systems: Connecting modern open finance platforms with existing core banking systems including Fiserv, FIS, Jack Henry, Temenos, and proprietary banking platforms through middleware layers, API gateways, and custom adapters that bridge the gap between legacy core systems and modern API ecosystems. Legacy integration is the most technically complex aspect of open finance and the area where poorly designed solutions create the most expensive operational problems.
• Embedded finance solutions: Building banking, payment, lending, and insurance capabilities that can be embedded into non-financial platforms through white-label APIs and SDKs. Embedded finance is the fastest-growing segment of the fintech market, projected to reach USD 248 billion by 2032, as e-commerce platforms, gig economy marketplaces, and SaaS companies add financial services to their offerings without becoming regulated financial institutions themselves.

The open finance approaches that matter most in Miami

Miami's position as a bridge between US and Latin American financial markets creates unique requirements for open finance architecture that differ from both pure US and pure Latin American approaches.

• API-first architecture vs. screen scraping: Screen scraping, which accesses financial data by simulating user login to existing web interfaces, is fragile, insecure, and increasingly blocked by financial institutions. API-first architecture uses standardized APIs with explicit consent management, token-based authentication, and structured data formats that provide reliable, secure, and auditable data access. Regulatory pressure from the CFPB Section 1033 rule and similar regulations in Latin America is accelerating the shift from scraping to API-based access across the Americas.
• Consent management and data permissioning: Open finance is built on the principle of consumer consent: the consumer authorizes specific data sharing with specific providers for specific purposes and can revoke that consent at any time. Implementing a robust consent management system with granular permissioning, consent dashboards, and revocation mechanisms is both a regulatory requirement and a trust-building feature that differentiates your platform from less transparent competitors.
• Cross-border open finance: Miami fintechs serving the Latin American market face the additional complexity of cross-border data sharing, multi-currency support, and compliance with multiple regulatory frameworks simultaneously. Cross-border open finance architecture must handle data residency requirements, encryption standards that vary by jurisdiction, and API standards that differ between countries while maintaining a unified consumer experience.
• Sandbox and testing environments: Developing and testing open finance APIs requires realistic sandbox environments that simulate banking system behavior without exposing real consumer data. Well-designed sandboxes accelerate development, reduce certification timelines with financial institution partners, and provide a safe environment for third-party developers to build integrations before going live.

Open finance services through CodersLab in Miami

CodersLab provides fintech and open finance engineering teams with senior LATAM engineers who have experience building financial services platforms for banking, lending, payments, and investment applications. Our engineers are based in LATAM, operating within one to four hours of Eastern Time, and cost 50 to 70 percent less than equivalent US-based fintech engineers. For Miami fintech startups, digital banks, and financial institutions building open finance capabilities, CodersLab provides the engineering expertise to build secure, compliant financial platforms at nearshore rates that preserve runway and accelerate time to market.

How CodersLab structures open finance engagements

Open finance engagements begin with a Fintech Architecture Assessment that evaluates your current technology stack, compliance requirements, integration points with financial partners, and target-state architecture. The assessment produces a prioritized implementation roadmap with architecture recommendations, compliance requirements, integration sequencing, and effort estimates for each phase. The assessment typically completes in two to four weeks and gives your leadership team a clear plan for building or extending your open finance capabilities.

Development follows a phased approach with the foundational API layer and consent management system built first, followed by data aggregation and integration with partner financial institutions in subsequent phases. Each phase includes security review, compliance validation, and integration testing before moving to the next phase. Post-launch, we provide ongoing platform support, API monitoring, compliance updates, and feature expansion as your open finance ecosystem grows.