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Legacy Systems vs Innovation: Financial Services Tech Budget Breakdown

Written by Dan Keldsen | Sep 17, 2025

The “Innovator’s Dilemma” published in 1997 by Clayton Christensen is THE classic book on disruptive innovation. Disruptive innovations typically exploit weaknesses in over-built, overly-expensive, overly-complicated systems that have built up one expensive, proprietary bolt (and brain, leg, arm) at a time, like the ultimate Frankenstein’s monster.

If you haven’t read the book (!!!) it exposes why laggards can be so easily disrupted by competitors.

I’ll sum the dilemma up as “too many of yesterday’s decisions have piled up, and created a barrier to even conceiving of trying something slightly different, let alone disruptive.”

Decades of Inaction Requires an Unequal Reaction

Call that a tribute to Newton's First Law of Motion, "An object at rest stays at rest." AKA the law of inertia.

I’m being generous with “yesterday’s decisions” when it’s often “decades of decisions” that have poured concrete around your technology choices and processes and “best practices” leaving you trapped in legacy systems and approaches that nobody in the right mind would pursue today. It’s an almost inescapable sludge gumming up your innovation motor.

This isn’t theoretical to me: I’ve spent the last 20 years of my life in Innovation roles of one form or another, as a Chief Technology Officer (CTOs typically being the future-facing role, with CIOs being the operational/day-to-day role), as a consultant (the external innovator) to Fortune 50 enterprises, Co-founder of four enterprise tech companies, Director of Business Innovation, Director of Consumer Innovation, and Chief Innovation Officer.

And the good news is… what’s always the most effective pain point to attack in order to unleash the art of what’s possible from out of the heads of your organization, and bring it into reality…

Is focusing on that massive budget and energy drain, the costly cycle where the vast majority of your technology budgets are consumed by maintaining outdated legacy systems, and all of the (let’s admit it) hacks of throwing armies of 3rd party professional services, premium licensing costs for solutions FAR out of normal support from the vendor, and an overbuilt 24/7 operation who pray on a daily basis that today is not the day that it all just falls apart.

All of that is leaving minimal resources for growth and innovation, not to mention the destructiveness to morale and the emotional well-being of your employees.

Financial Services vs. Everyone Else

Financial Services companies are right there, stuck as an industry, as the poster children for legacy spend bleeding out their ability to innovate.

This imbalance has created a critical strategic vulnerability that threatens the competitiveness and long-term viability of banks, credit unions, and other financial services companies.

The Budget Allocation Crisis

Credit Unions: The 90/10 Imbalance

Credit unions represent one of the most extreme examples of this budget imbalance. Credit unions reportedly spend approximately 90% of their technology budgets on legacy and existing systems maintenance, leaving only 10% available for growth, innovation, and future-focused initiatives.

This stark allocation reflects the challenging reality facing these member-owned institutions as they struggle to modernize aging infrastructure while serving roughly 142 million members across the US who increasingly expect digital-first experiences.

Banks: Varying Degrees of Legacy Burden

The legacy burden varies significantly across different types of banking institutions:

Large Banks:

  • McKinsey estimates 70% of banks' IT budgets are consumed by supporting legacy infrastructure
  • S. banks allocate over 55% of their technology budgets to maintaining business operations, while only 19% goes toward developing innovative solutions
  • Global spending on maintaining outdated banking technologies is projected to rise from $36.7 billion in 2022 to $57.1 billion by 2028

Regional and Community Banks:

  • Mid-size banks ($500 million to $50 billion in assets) spent 0.22% of total assets on IT in 2017
  • In contrast, JP Morgan Chase and Bank of America spent 44% and 0.43% of total assets respectively, demonstrating the resource advantage of mega-banks
  • The median 2022 technology budget for community banks was $1 million, with 81% of institutions increasing their tech budgets by an average of 11% over 2021

Government Sector: Extreme Legacy Dependency

Government agencies provide a stark illustration of the legacy burden:

  • 80% of federal government IT spending goes to operations and maintenance of existing systems
  • Some agencies spend even more: Army Corps of Engineers (96%), Nuclear Regulatory Commission (93%), Agriculture Department (90%), Veterans Affairs (88%)
  • The UK government allocates £2.3 billion annually (nearly 50% of its tech budget) to maintaining outdated systems

Financial Impact by Institution Type

Insurance Industry

  • Financial services companies spent 15% of revenue on technology in 2023, up from 10% in 2022
  • 80% of the 15% is estimated to go toward legacy system maintenance, representing approximately $168 billion annually for the insurance industry alone

Banking Sector Overall

  • Banks spent $650 billion on technology in 2023 – roughly equivalent to Belgium's GDP
  • McKinsey estimates only 5-10 cents of every tech dollar delivers actual business value, with the remainder consumed by maintenance and patching
  • Global financial institutions spent $36 billion on legacy technology costs in 2022, projected to hit $57 billion by 2028

Cost Breakdown by Function

  • Most organizations spend 60-80% of IT budgets on maintaining existing hardware and legacy applications
  • Deloitte found the average enterprise spends 57% of IT budget on supporting operations and only 16% on innovation
  • Legacy technologies hamper efficiencies and restrict growth in 88% of businesses

Catastrophic Failure Stories

TSB Bank: The $400 Million Disaster (2018)

TSB Bank's attempted migration from Lloyds' legacy systems to a new Sabadell platform became one of the most catastrophic banking IT failures in modern history.

The Failure:

  • 2 million customers affected, with 1.9 million locked out of accounts for weeks
  • All 550 branches and digital channels severely disrupted
  • 3 billion customer records involved in the botched migration
  • 225,492 customer complaints filed between April 2018 and April 2019

Financial Consequences:

  • £48.65 million fine from UK regulators
  • £330 million total cost including compensation and repairs
  • £32.7 million paid in customer redress
  • CEO Paul Pester resigned under pressure

Root Causes:

  • "Big bang" migration approach instead of phased transition
  • Insufficient data testing and lack of full-volume testing
  • Management failures rather than technology issues
  • Inadequate risk management and governance oversight

Wells Fargo: Legacy System Paralysis

Wells Fargo exemplifies how legacy systems can cripple even major institutions.

The Problems:

  • Antiquated systems hampering regulatory compliance after fake-account scandal
  • Server failures knocking out online banking capabilities
  • Difficulty monitoring employee pay, building financial adviser platforms
  • Embarrassing outages exposing technological obsolescence

Strategic Impact:

  • Significant costs for system upgrades and data center improvements
  • Regulatory scrutiny intensified due to technological shortcomings
  • Competitive disadvantage against more agile fintech competitors

Additional Banking Failures

Allied Irish Bank (2007): Troubled Oracle FlexCube implementation requiring extensive remediation

Union Bank of California (2011): Scrapped Infosys' Finacle platform after failed implementation

Deutsche Bank (2023): $1 billion modernization project failure

Success Stories: Breaking Free from Legacy

JPMorgan Chase: Digital Transformation Leadership

JPMorgan Chase demonstrates how major institutions can successfully modernize.

Investment Scale:

  • $11.4 billion technology spend in 2019 (5.6% increase from 2018)
  • Digital customer base reached 48 million active users by 2018
  • 60% of transactions were digital by 2024

Key Achievements:

  • AI-powered chatbots reducing service costs by 30%
  • Blockchain technology implementation for secure transactions
  • Mobile user growth of 12% year-over-year
  • $996 million in payments services revenue from digital investments

Bank Leumi: API-First Transformation

Bank Leumi's modernization showcased rapid legacy integration.

Results:

  • "Copybook to service in five minutes" – dramatic acceleration in development
  • 25 new microservices deployed to production in one week
  • Launched Finteka – fintech subsidiary providing APIs to external vendors
  • Successful API-first paradigm enabling rapid innovation

DBS Bank: Mobile-First Strategy

Singapore's DBS Bank implemented a comprehensive digital transformation.

Achievements:

  • "Mobile-first" strategy simplifying banking services
  • User-friendly interface demonstrating customer experience priority
  • Streamlined operations through digital integration
  • Enhanced accessibility for customers across multiple channels

Commonwealth Bank: AI-Powered Fraud Detection

Commonwealth Bank leveraged modern technology for operational improvements.

Innovation Results:

  • Proactive fraud detection through AI and machine learning
  • Significant improvements in detection rates and accuracy
  • Cloud technology adoption strengthening operational infrastructure
  • Enhanced customer trust through improved security measures

The Competitive Divide: Size Matters

Large Banks vs. Regional Banks

Technology Investment Disparity:

  • JPMorgan Chase: $11.4 billion annual tech spend (0.44% of assets)
  • Bank of America: $10 billion annual tech spend (0.43% of assets)
  • Mid-size banks: 0.22% of assets spent on IT

Capability Gaps:

  • Large banks can afford dedicated innovation labs, AI research, and comprehensive modernization
  • Regional banks must prioritize spending and often rely on vendor partnerships
  • Community banks face the greatest resource constraints, limiting modernization options

Fintech vs. Traditional Banks

Fintech Advantages:

  • No legacy system burden: can build on modern architecture from day one
  • Cloud-native technologies enabling rapid deployment and scaling
  • 10 times lower costs due to optimized corporate structures
  • Faster innovation cycles: weeks vs. quarters for traditional banks

Traditional Bank Challenges:

  • 75% increasing tech budgets to compete with fintech innovation
  • Legacy system integration complexity slowing new product launches
  • Regulatory compliance adding layers of complexity to modernization

Industry Trends and Future Outlook

Digital Transformation Investment Growth

Credit Unions:

  • Average spending on digital transformation rose from $220,000 per $1B assets in 2021 to $780,000 per $1B assets in 2023
  • 73% of credit union leaders plan to increase digital budgets in 2026
  • Digitally mature credit unions experience 2x annual revenue growth

Banking Industry Overall:

  • Global technology spending increasing 9% annually, outpacing 4% revenue growth
  • 30% of digital banking transformations report successful implementation
  • 70% of transformation projects exceed original budgets

Modernization Approaches

Successful Strategies:

  • Phased modernization rather than "big bang" approaches
  • Cloud-first architectures reducing maintenance overhead
  • API-led integration enabling gradual legacy system replacement
  • Microservices adoption providing flexibility and scalability

Risk Mitigation:

  • Comprehensive testing including full-volume data migration testing
  • Strong governance with clear accountability and risk management
  • Change management addressing cultural and organizational factors

The stark reality is that financial institutions continuing to allocate 70-90% of technology budgets to legacy system maintenance are fundamentally compromising their future competitiveness. While the cost and risk of modernization are significant, the examples of TSB Bank and others demonstrate that the cost of inaction—or poorly executed transformation—can be far more devastating. The institutions that have successfully modernized, like JPMorgan Chase and Bank Leumi, show that strategic technology investment can drive substantial business value, competitive advantage, and customer satisfaction.

The question for financial services leaders is not whether to modernize, but how to do it strategically, incrementally, and with proper risk management to avoid becoming the next cautionary tale while positioning for sustainable growth in an increasingly digital financial landscape.

Breaking the Cycle: Your Innovation Future Starts with One Conversation

Twenty years of innovation roles have taught me one unshakeable truth: the organizations that thrive are those willing to confront their legacy burden head-on, while those that don't become case studies in business school textbooks about "what not to do."

The math is brutal but simple. If you're spending 70-90% of your tech budget keeping yesterday's decisions on life support, you're not just falling behind—you're actively funding your own obsolescence. Every dollar that goes to maintaining that Frankenstein's monster of legacy systems is a dollar that could be building your competitive future.

But here's what my two decades in the innovation trenches have also shown me: this isn't a problem you solve by throwing more money at it, or by hoping your next vendor will magically fix everything. TSB Bank had plenty of money. Wells Fargo had resources. What they didn't have was the right strategic approach to untangle decades of accumulated technical debt without destroying their business in the process.

The successful transformations—JPMorgan, Bank Leumi, DBS—didn't happen because those organizations were braver or had bigger budgets. They succeeded because they understood something fundamental: modernization isn't a technology project, it's a business strategy that requires the right expertise, the right approach, and the right partners.

Newton's First Law works both ways. An object at rest stays at rest, but an object in motion stays in motion. The question is: which object do you want to be?

Ready to Break Free from Legacy Quicksand?

As someone who has guided organizations through this exact transformation—from both sides of the table as CTO and as the external innovation catalyst—I can tell you that the hardest part isn't the technical lift. It's knowing where to start, how to prioritize, and how to manage the transformation without betting the company on a single roll of the dice.

At Infocap, we've spent years perfecting the art of legacy liberation. Not through rip-and-replace disasters, but through strategic, phased approaches that turn your biggest cost center into your innovation engine—without the catastrophic risks that keep executives awake at night.

If you're tired of watching 90% of your budget disappear into the maintenance black hole while your competitors eat your lunch, let's have a conversation. Because the difference between the organizations that successfully modernize and those that become cautionary tales isn't luck—it's having the right strategy and the right expertise to execute it.

Your legacy systems didn't become a problem overnight, and they won't be solved overnight. But every day you wait, that concrete around your innovation motor gets a little bit harder.

The time to break free is now. The question is: will you be the disruptor, or the disrupted?

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