Why Disconnected Insurance Systems Drain 87% of IT Budgets

Every insurer, broker and MGA pays a daily tax for poor insurance system integration. It arrives in the form of rekeyed data, manual reconciliation, spreadsheet workarounds and errors that nobody is counting. Most boards have no idea how large the bill actually is.

The industry spends approximately $210 billion a year on IT. Of that, just 13% goes towards genuine transformation. The rest, roughly $183 billion, funds the maintenance of existing systems.¹ That leaves almost nothing for the insurance system integration work that would actually reduce costs.

What makes this worse is that the cost is largely invisible. It does not appear as a line item on any P&L. It hides inside the 40% of underwriter time spent on administration,² the reconciliation spreadsheets that take three days every month, and the errors that only surface at audit. It is the tax that fragmented insurance systems impose on every function, every day, across every team.

This article puts numbers to that tax. Using data from McKinsey, BCG, Accenture, KPMG, Deloitte, Bain, Capgemini and Lloyd’s, it quantifies what a lack of insurance system integration actually costs and what getting it right delivers.

Where the Money Actually Goes

BCG’s 2024 analysis of global insurance IT spending found that around 35% of all insurance applications still run on legacy technology stacks that are not cloud-ready.¹ McKinsey’s benchmarking data shows that companies with modernised, integrated IT achieve 41% lower IT costs per policy and 40% higher operational productivity than those running fragmented systems.³ Insurers operating numerous duplicate systems face operating costs three to four times higher than competitors on consolidated platforms.

The age of any single system matters far less than the lack of insurance system integration between them. McKinsey identified one insurer running more than 300 active IT systems, with over 40% slated for decommissioning and cost ratios twice the market average for its size.³ Accenture documented a carrier where an underwriter was theoretically required to use 92 different digital solutions in a single working day.⁴

Deloitte’s 2026 Global Insurance Outlook confirms that insurance leaders overwhelmingly consider IT their greatest cost management challenge, far outpacing regulatory and accounting compliance.⁵ For the average P&C carrier, IT’s share of total operating cost has climbed from 17% to 24% over a five-year period. For life carriers, it has risen from 26% to 29%.³

Matthew Smith, KPMG’s Global Lead for Insurance Strategy and Transformation, sums it up: “Big technology budgets don’t necessarily lead to big cost improvements.”⁶ The spending itself is enormous. The problem is how little of it creates genuine insurance system integration between platforms.

The Rekeying Tax: How Disconnection Eats Productivity

When systems do not talk to each other, people fill the gap. Without proper insurance system integration, human beings become the middleware. And the cost of that is staggering.

McKinsey’s “Insurance Productivity 2030” research found that 30 to 40% of a commercial lines underwriter’s time is consumed by administrative tasks such as rekeying data or manually executing analyses.² Capgemini’s 2024 World P&C Insurance Report put the figure higher still: 41 to 43% of underwriter time goes to data entry, record-keeping and meetings rather than actual risk assessment.⁷

Accenture’s P&C Underwriting Survey found that the average underwriter spends 70% of their time on non-underwriting activities. Redundant inputs and manual processes were cited by 70 to 71% of underwriters as the primary cause, with outdated or inflexible systems cited by 40 to 50%.⁴

In financial terms, Accenture calculated that the efficiency loss from underwriters spending 40% of their time on non-core activities represents $85 billion to $160 billion over five years across the industry.⁸

This is the direct consequence of poor insurance system integration. Every time a piece of data is rekeyed from one platform to another, it costs time, introduces risk and pulls a skilled professional away from the work they were hired to do. Multiply that across an organisation with dozens of disconnected systems and the compound effect is enormous.

Reconciliation, Errors and the Spreadsheet Problem

Deloitte’s Reinsurance Technology Survey revealed that 50% of executives surveyed said their companies continue to use spreadsheets for reinsurance administration. The same survey found 69% identified data quality as a major pain point, and half reported significant manual workarounds in their operations.⁹

The error rates from these manual processes are well documented. Industry benchmarks place the average manual data entry error rate at approximately 1%. But academic research by Professor Raymond Panko, widely cited by PwC, EY and KPMG, found that in complex spreadsheets the probability of human error rises to between 18% and 40%.¹⁰

In insurance, these errors carry real financial weight. Poor insurance system integration means data passes through multiple manual touchpoints, and each one compounds the risk. EY’s claims quality assessments show leakage representing approximately 7 to 14% of carriers’ total claims spend.¹¹ PwC’s “Stopping the Leaks” research calculated that for an insurer spending $500 million in claims, implementing controls against leakage could improve the bottom line by $25 million to $50 million.¹¹

Lloyd’s Blueprint Two programme was launched to address exactly this kind of insurance system integration failure. The Corporation described “a plethora of duplicated processes involving repeated rekeying of data and manual checking of records and entries to correct errors.” Lloyd’s estimated the market-wide cost at over £800 million, representing roughly 3% of operating costs.¹² The programme, a £300 million investment targeting nearly 30-year-old technology, has since been delayed to 2028.

Capgemini’s research puts the scale of the gap in perspective. Only the top 8% of insurers qualify as “underwriting trailblazers” with automated, data-driven recommendation capabilities. The remaining 92% are still substantially reliant on manual processes.⁷

The Numbers at a Glance

The following table summarises the measurable cost of poor insurance system integration, drawn from the consultancy and industry research cited throughout this article.

The Customer and Talent Cost Nobody Budgets For

Fragmented systems do not just cost money internally. They erode the customer experience and drive away talent.

McKinsey’s North American Insurance CX Survey found that CX leaders outperformed peers in total shareholder return by 20 percentage points in life insurance and 65 percentage points in P&C over a five-year period.¹³ Satisfied customers are 80% more likely to renew. Yet over 30% of insurance customers remain dissatisfied with available digital channels, and 40% of those who contact their insurer report interacting with multiple people, creating a disjointed experience.

Accenture found that poor claims experiences put $170 billion of global insurance premiums at risk over five years, with 74% of dissatisfied claimants switching or considering switching carriers.⁸ Behind most of these poor experiences is a failure of insurance system integration. When claims handlers cannot see the full picture because data sits in separate systems, the customer pays the price in delays and repeated requests for information.

On the talent side, the picture is equally concerning. Insurance industry turnover rates have risen from 8 to 9% to 12 to 15%.¹⁴ US carriers employ approximately 85,000 fewer people than in 2020. PwC found that while 92% of C-suite executives say they are satisfied with workplace technology, only 68% of staff agree.¹⁵ The gap matters because it is the frontline staff, the underwriters, claims handlers and account managers, who bear the daily burden of poor insurance system integration.

Regulatory Risk Is Tightening Around Disconnected Systems

The FCA’s operational resilience framework, with its March 2025 compliance deadline, makes insurance technology interoperability an explicit regulatory concern. The FCA reviewed 47 insurance firms and found readiness “varied within the sector,” with some firms failing to demonstrate basic understanding of the guidelines.¹⁶ The regulator confirmed that if a third-party provider supporting important business services fails, the responsibility lies with the firm, not the supplier.

FCA fines reached £176 million in 2024, a 230% increase from £53.4 million in 2023, with 75% citing failures in management and control.¹⁷ McKinsey has warned that regulators are paying increasing attention to technical debt, noting that several leading financial groups in the EU have already been investigated for IT and data-related compliance breaches.³ The firm expects a similar movement in insurance.

For firms where insurance system integration has been deferred, the regulatory risk is compounding. Every manual workaround is a potential audit failure. Every spreadsheet used for reconciliation is an uncontrolled process. Every instance of rekeyed data is an opportunity for the kind of error that regulators now have the tools and appetite to investigate.

What Connected Insurance Systems Actually Deliver

The business case for insurance system integration is no longer theoretical. It is documented across multiple consulting firms with real-world evidence.

Revenue and speed. BCG found that a modern, connected core platform can boost revenue by 25% and accelerate new-product time to market by three to four times.¹ BCG’s insurance transformation clients achieved on average 2.7 times the impact of their original management plan.¹⁸

Cost reduction. Bain documented an insurer achieving approximately 40% reduction in annual costs across claims, operations and IT from implementing a connected digital platform.¹⁹ In a joint study with Google, Bain projected that full digitalisation could deliver up to 72% reduction in policy administration costs within five years.¹⁹

Claims performance. KPMG’s 2025 survey of 250+ insurance leaders found that modernising claims technology stacks can reduce complexity and cost by 25 to 30%.⁶ Aviva deployed over 80 AI models in claims, cutting liability assessment time by 23 days, improving routing accuracy by 30%, reducing customer complaints by 65% and saving more than £60 million in 2024.²⁰

Underwriting efficiency. BCG documented up to 36% efficiency improvement in complex commercial lines through AI-augmented underwriting, and up to 3 percentage points of loss-ratio improvement through better use of unstructured data.¹⁸ None of this is possible without connected insurance systems that can share data across underwriting, claims and distribution in real time.

Combined ratio impact. Oliver Wyman projects that insurance API integration and plug-and-play digital capabilities can deliver 2 to 3 percentage points of combined ratio improvement.²¹ For a carrier writing £1 billion in premium, that represents £20 to £30 million flowing directly to the bottom line.

Five Steps Towards Connected Insurance Systems

The evidence is clear. But the path from fragmented to connected does not require a single big-bang transformation. In fact, BCG reports that 74% of large-scale insurance IT transformations fail to deliver planned results, often because firms try to do too much at once.²² The firms that succeed take a different approach.

1. Map your integration gaps. Before investing in new technology, audit how data actually flows between your existing systems. Where is data being rekeyed? Where do reconciliation bottlenecks exist? Where are spreadsheets acting as the glue between platforms? This exercise alone often reveals the true cost of disconnection.
2. Prioritise API connectivity. Insurance system integration starts with connecting what already exists, not replacing it. Modern, API-first architecture allows existing systems to share data in real time without costly rip-and-replace projects. McKinsey’s research confirms that insurers are moving towards modular, open environments that allow best-of-breed tools to interoperate.²³
3. Start with the highest-cost processes. Focus insurance system integration efforts on the processes with the greatest measurable waste: submission intake, bordereaux processing, claims notification, policy mid-term adjustments and renewal workflows. These are the areas where insurance data integration delivers the fastest, most visible returns.
4. Build for ecosystem participation. Insurance system integration is increasingly about more than internal connectivity. The insurance value chain is becoming an ecosystem of interconnected platforms. Carriers, brokers, MGAs, coverholders and third-party data providers all need to exchange information seamlessly. Firms that build their technology stack around interoperability will be able to participate in new distribution channels, including embedded insurance, AI-powered quoting and partner ecosystems. Those that do not will find themselves excluded.
5. Measure the cost of inaction. Every board that defers insurance system integration should quantify what the current state costs. Calculate the FTE hours spent on rekeying. Estimate the claims leakage from manual processes. Model the revenue impact of slower time-to-quote. When the cost of standing still is made visible, the business case for connectivity becomes self-evident.

The Cost of Inaction Now Exceeds the Cost of Change

The data across McKinsey, BCG, Accenture, KPMG, Deloitte, Bain and Capgemini paints a consistent picture. Insurance firms that have neglected insurance system integration are paying a compounding penalty: IT costs three to four times higher than integrated peers, 30 to 43% of skilled underwriter time wasted on administration, 7 to 14% claims leakage, deteriorating customer experience, rising regulatory exposure and accelerating talent attrition.

What has changed in the past two years is the strength of evidence for the alternative. McKinsey’s 41% IT cost reduction per policy, Bain’s 40% annual cost reduction from connected digital platforms and KPMG’s 25 to 30% claims cost reduction are not projections. They are documented outcomes from firms that prioritised insurance system integration.

Gaurav Garg, Oliver Wyman’s Global Head of P&C Insurance, puts the challenge clearly: “Insurers need to relook at the very foundations of their business.”²¹ For insurers, brokers and MGAs still operating on fragmented systems, the question is no longer whether they can afford to integrate. It is whether they can afford not to.