Fintech companies captured an estimated $120 billion in revenue from services that were traditionally the exclusive domain of banks in 2025, according to a Goldman Sachs analysis of global banking revenue pools. That figure is up from $42 billion in 2019. The disruption is concentrated in consumer payments, personal lending, and deposit gathering, three areas that have historically generated the highest margins for retail banks. The shift is structural, driven by differences in cost structure, technology architecture, and customer acquisition strategy between fintech firms and traditional banks.
The Cost Structure Advantage
The most fundamental reason fintech companies are taking banking market share is cost. Traditional banks operate with cost-to-income ratios between 55% and 65%, weighed down by branch networks, legacy IT systems, and regulatory compliance infrastructure built over decades. Most fintech companies operate with cost-to-income ratios below 40%. Some, particularly in payments and digital banking, operate below 30%.
According to a McKinsey analysis of fintech cost structures, the average cost to acquire a new customer at a neobank is $15 to $35, compared with $200 to $350 at a traditional bank. The cost to maintain a customer account is similarly lower: approximately $25 per year at a digital bank versus $150 to $200 at a branch-based bank.
Fintech platforms are reducing financial transaction costs by up to 80% in certain categories. These cost savings allow fintech companies to offer better pricing to consumers, including higher savings rates, lower loan rates, and fewer fees, while still generating operating margins that attract continued investor support.
Technology as a Competitive Weapon
Fintech companies were built on modern technology stacks from the start. Their core systems run on cloud infrastructure, use microservices architecture, and are designed for continuous deployment. This means they can release new features weekly or even daily. Traditional banks, by contrast, often rely on core banking systems built on COBOL mainframes in the 1980s and 1990s.
According to Accenture’s research on legacy systems in banking, 43% of banking systems globally still run on technology that is more than 20 years old. Replacing these systems is expensive, risky, and time-consuming. Many banks have attempted core system modernizations that took years and cost hundreds of millions of dollars, with mixed results.
Fintech platforms are growing faster than traditional banks in large part because their technology allows them to iterate quickly, personalize products at scale, and operate with smaller engineering teams relative to the complexity of their offerings.
Where Disruption Is Deepest
Consumer payments has experienced the deepest disruption. PayPal, Venmo, Cash App, and international platforms like Alipay and M-Pesa have become the default payment methods for hundreds of millions of consumers. Digital wallet usage has reached more than 4 billion users worldwide. In many emerging markets, mobile payment platforms have entirely bypassed traditional card-based payment systems.
Personal lending is another area of significant displacement. According to Statista’s data on online lending, fintech lenders originated 38% of all personal loans in the United States in 2025, up from 5% in 2013. The speed and convenience of digital lending platforms, which can approve and fund loans within hours, are difficult for traditional banks to match.
Deposit gathering is the newest area of fintech disruption. Neobanks like Chime, Revolut, and N26 have attracted tens of millions of deposit accounts. While total neobank deposits remain small relative to the banking system, the growth rate is significant. Fintech companies are capturing 25% of global banking revenues, and deposit competition is contributing to that trend.
How Banks Are Defending Their Positions
Traditional banks are not standing still. Many are investing heavily in digital capabilities, launching their own mobile-first products, and acquiring fintech companies. A BCG study on bank responses to fintech disruption found that banks that invested more than 15% of revenue in technology experienced revenue growth 3 percentage points higher than those that invested less than 10%.
75% of banks now collaborate with fintech startups, recognizing that partnerships can be faster and more cost-effective than internal development for certain capabilities. The line between fintech and banking is blurring as incumbent banks adopt fintech practices and successful fintech companies apply for banking licenses.
Goldman Sachs’ estimate of $120 billion in displaced banking revenue is conservative, since it counts only direct revenue losses and not the margin compression that fintech competition creates across the broader banking product set. The disruption is likely to deepen as fintech companies expand into more complex products like mortgages, commercial lending, and treasury services.
