Fintech firms rely on aging tech systems
Many fintech lenders continue using technology platforms built decades ago, creating problems with outdated infrastructure that resists modern tools and fails to meet current compliance standards. An industry survey conducted in 2026 found that 87% of these lenders have begun migration efforts, with over half planning to complete the move within the next year. The challenge lies in building a compelling case for the transition.
The Cost of Hanging Onto Legacy Systems
These platforms are not just old—they often follow a monolithic design with tightly coupled components that make updates difficult and risky. Each change becomes a major project, and maintenance costs rise over time. The survey showed that a third of lenders spend 80% to 100% of their platform resources on upkeep, while another 40.9% allocate 60% to 80% to it. This leaves little capacity for innovation or compliance updates.
Some lenders still operate on systems like IBM AS/400 or applications written in COBOL or RPG, languages most of the tech industry has abandoned. The issue extends beyond hardware—it involves a shrinking pool of experts who know how to maintain these systems. When those experts retire, their knowledge disappears with them.
Why Lenders Delay Migration
Most lenders postponing updates do not act out of complacency. Cost constraints were reported by 28.6% of respondents, while 31.6% cited limited resources. Only 5.3% expressed confidence in their current systems. The primary concern is transition risk: rewriting stable calculation logic or disrupting compliance processes during migration introduces uncertainty.
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Dependence on specialized expertise presents another risk. Fintech lending calculations require deep knowledge, and when key personnel leave, critical understanding can vanish. The survey identified this as a challenge for 18.1% of lenders, though the actual number is likely higher.
Modernization is not just about staying competitive. Fraud detection, compliance tooling, and AI-driven capabilities all depend on updated infrastructure. Older systems cannot integrate with these advancements, exposing lenders to security threats and operational inefficiencies. Delaying the transition only makes catching up harder.
API-Based Architecture: The Technical Foundation of Modern Platforms
API-first architectures are changing how lenders operate. Unlike monolithic systems, API-based platforms allow updates to be deployed centrally, eliminating version drift and enabling seamless third-party integrations. The 2026 survey found that API connectivity was the top modernization priority for 31.4% of lenders—more than cloud capability or scalability.
This shift supports the connective tissue that fraud detection, compliance tooling, and AI-driven capabilities require. The market has recognized this priority, as lenders seek not just newer software but a foundation for future growth.
Pressure to Modernize Is Increasing
Business expansion is intensifying the need for updates.
The survey found that lenders consider modernization extremely or very urgent. Those who delay risk falling behind in a competitive environment that does not wait.
The transition requires a shift in operations. Compliance, product launches, and knowledge retention all depend on it. Lenders treating modernization as a long-term investment, rather than a single project, are most likely to secure a lasting advantage.
