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TABLE OF CONTENT
TL;DR
The $12.9M Entity Resolution Problem that is turning heads in 2026, is not a new conversation doing rounds in the data corridors. Gartner predicted this back in 2020 when enterprises were busy playing with AI like a toddler would play with a rattle.
Gartner called it the average annual cost of poor data quality per organisation. This alone makes the identity layer impossible to ignore.
When different identities are fragmented across disparate systems, the business does not just lose data quality; it loses cash, speed, and confidence in every decision depending on that very data.
The figure puts a real number on a problem many leaders already feel but do not always quantify. This is not only a cost in bad records, but it also surfaces a rather harsh truth in wasted effort, missed revenue, manual cleanup, and weak trust in the data itself.
What does entity resolution do?
Entity resolution helps a business to determine whether different records refer to the same real-world entity. This entity could be a customer, patient, supplier, or account.
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To be precise, it helps answer questions like: Is John Doe and John D. the same person across the enterprise’s CRM, billing, and support? Are there duplicate records? And most importantly, how confident is the business in the match? These are critical answers as a false merge can join two different people into one identity, while a false split breaks one real person into many identities.
What Poor Entity Resolution Costs to Organisations
Poor entity resolution remains hidden from plain sight and takes cover behind more visible layers like AI models and analytics dashboards.
1. Entity resolution problems, specifically, are structurally designed to stay invisible because fragmented data stacks treat each integration as a handoff, and every handoff is a contract nobody wrote down, creating a compounding maintenance cost that becomes a structural tax on every organisation trying to build on top of data.
😉 Imagine your kitchen tap is leaking at one drop per minute. It takes roughly 24 hours to fill half a mug. Harmless enough to ignore, until it fills the bucket and floods the floor. That is exactly the dynamic with fragmented identity data: slow, invisible, and catastrophically expensive by the time it registers.
2. According to Gartner, poor data quality costs B2B organisations an average of $12.9 million annually, and the typical organisation has an account overlap rate of 20–30% in its own data files. These are embedded in the daily decisions your teams make while looking at incomplete records.
💡Consider what this looks like operationally. A sales team working the same account under three different records. A service team is unable to trace a full customer journey because it is split across disconnected systems. An analyst reconciling mismatched identities before a single report can begin. The burden falls on analytics and finance teams, spending hours on manual reconciliation just to get an accurate count of spend or revenue.
3. All of these compounds. Think of an office cabinet where the same person appears under different headers in different drawers. The files exist. The problem is that no one can trust the cabinet to tell a complete story. When organisations rely on flawed inputs, every downstream system inherits the error: dashboards display misleading performance metrics, operational processes malfunction, and strategic planning drifts away from reality. This is an operational misalignment that costs money at every level, along with compliance gaps, and AI and analytics drift.
[playbook]
Why a Data Management Platform Matters?
A data management platform turns entity resolution into a governed business capability. Hence, these platforms function as a capability layer.
- A well-architected DMP unifies fragmented identities across disparate systems, applies consistent matching rules across domains, and preserves the data governance and lineage that compliance and downstream AI both depend on. Reusable modular governance models, applied across different use cases and data products, are what separate a managed capability from a patchwork of point solutions.
[related-1]
- Entity resolution is widely regarded by data management experts as one of the most critical activities in master data management, the process of arriving at a singular, verified view of every entity the enterprise does business with. Treating it as a one-off script buried in the stack defeats that purpose entirely.
- When matching logic is reusable and governed, the business stops rebuilding the same identity layer from scratch across teams and systems. The best entity resolution technologies scale to handle enterprise volumes while maintaining accuracy, providing a future-proof foundation for growing master data management needs. That is the shift a Data Management Platform enables, through operationally useful identity data that the rest of the stack can actually trust and act on.
[related-2]
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That’s a heavy-lifting effort, and that matters because entity resolution is not to be treated as a one-off script and just stay in some corner of the stack; rather, it should behave like a managed capability. When the logic is reusable and governed, the business stops reinventing the wheel viz building the same identity layer over and over again. A Data Management Platform can also make ER operational, not just technically correct, but also operationally useful.
What leaders should look for?
The cost $12.9M, is not the exact figure every enterprise will hit at some point in time. It represents a value that draws attention to a cost many leaders already feel but are rarely able to quantify. It turns an abstract data issue into a concrete business problem.
That is powerful because poor entity resolution is often treated as cleanup work while it is a decision-quality issue. If the identity layer is weak, everything above it has to work harder. If the identity layer is strong, the rest of the stack becomes easier to trust.
[related-3]
A healthy entity resolution should produce visible outcomes. Fewer duplicate records, better customer and account visibility, cleaner reporting, more accurate segmentation, faster service resolution, and better trust in AI and analytics outputs. These operating improvements bring clarity to the business.
For the data leaders, the question is not whether entity resolution is useful or not. It is whether the organisation has made it part of the operating model?
How much of time is the business losing to identity cleanup? Do we have one shared and governed identity layer, or numerous local versions of truth? Can we explain how matches are made and how conflicts are handled? Is it hidden inside isolated workflows? Can downstream teams trust the identities they consume?
If the answers to those questions are blurry, the business is already paying the Identity Tax.
Final note
The core cost of poor entity resolution is not only bad data; it derails the entire decision-making process, slows the execution, and forces a business to keep paying for the same ambiguity again and again. To escape this trap, businesses need to start with identity. It gives better analytics, improved personalisation, superior compliance, and exceptional AI.
FAQs
Q1. Is entity resolution the same as deduplication?
No, deduplication removes the exact or obvious duplicates. Entity Resolution goes a mile further and determines whether different-appearing records belong to the same real-world entity.
Q2. Why is entity resolution so hard?
Real-world data is generally messy. Names change, records go stale. Additionally, different teams define identity differently.
Q3. What does a Data Management Platform add here?
An MDM gives a governed way to unify identity, apply matching logic consistently, and make the output reusable across teams, allowing for the smooth functioning of a business.
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Modern Data 101 is a movement redefining how the world thinks about data. A community built by the same team behind the world’s first data operating system, Modern Data 101 sits at the intersection of data, product thinking, and AI. Spread across 150+ countries, the community brings together a global network of practitioners, architects, and leaders who are actively building the next generation of data systems.
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