Zombie Assets: Why No One Has a Reliable Number

Zombie assets are fixed assets that physically exist and remain in active use, but were never entered into the fixed asset register, typically from field or plant-floor purchases made below the formal capital review threshold. They go underdepreciated, underinsured, and invisible to any audit that only tests what the register already contains.

Kroll Advisory, which runs more than 8,000 fixed asset engagements a year across 36 countries, reports that 10 to 30 percent of assets on the average fixed asset register are ghost assets, entries for equipment that no longer physically exists. Most fixed asset managers and controllers already know that number. Fewer have heard Kroll's other finding, from the same research: the inverse problem, assets that physically exist but were never entered into the register at all. Kroll calls these zombie assets. Unlike ghost assets, there is no equivalent prevalence figure for them, not because the problem is rare, but because almost nothing about how it gets created lends itself to being counted. That missing number is not a gap in the research. It is the finding.

What Are Zombie Assets?

A zombie asset is a piece of equipment that is physically on-site and in active use, but does not appear anywhere in the fixed asset register, so it accrues no depreciation, carries no insurance coverage, and leaves no audit trail.

Ghost assets and zombie assets are opposite failures of the same system. A ghost asset is recorded but gone. A zombie asset is present but unrecorded. Kroll names both in the same report, and the mechanism behind zombie assets is almost always the same: a maintenance or operations team buys a replacement motor, a control panel upgrade, or a new piece of material handling equipment on a purchase order or a P-card, often below the dollar threshold that triggers formal capital review. If that purchase meets capitalization criteria under IAS 16 or ASC 360 and nobody routes it to the fixed asset register, the asset enters service with no accounting record at all, and stays that way until someone happens to notice.

A plant replaces a $40,000 conveyor motor through a maintenance work order instead of a capital request. The motor runs for six years. It is never depreciated, never insured as a capital asset, and never surfaces when an auditor samples the register, because there is nothing in the register pointing to it. The company has been carrying an asset it does not know it owns, for the entire time it has been generating value on the floor.

• A control system upgrade purchased through an operations budget instead of capital
• A replacement forklift acquired through a rental-to-own arrangement outside the standard procurement flow
• A backup generator installed after an outage and never formally capitalized

Why the Data on Zombie Assets Is So Thin

The absence of a reliable zombie asset statistic is not an oversight. Four structural reasons make the problem resistant to measurement, even for organizations motivated to quantify it.

1. Inconsistent definitions: some sources use “zombie asset” for anything physically present but unrecorded, others blur it with idle, obsolete, or ghost assets, which makes any two studies difficult to compare directly.
2. Hidden until someone looks: a zombie asset only becomes visible during a physical reconciliation between what is on the floor and what is in the register. Companies that do not run that reconciliation routinely have no way to know their own rate, let alone report it to anyone else.
3. No incentive to publish: a high zombie asset count implies weak procurement controls, tax exposure, and audit risk. Organizations that do measure it rarely have a reason to make that number public.
4. Decentralized origin: ghost assets usually trace back to one process failure, a disposal that was never retired from the books. Zombie assets trace back to dozens of small, independent purchasing decisions spread across a plant, which makes them harder to model even internally.

Annual Audit vs. Continuous Verification

The Real Cost of Zombie Assets

Even without a market-wide prevalence figure, the cost mechanics of a single zombie asset are well understood, and they compound the longer it stays unrecorded.

• Missed depreciation: the asset is underdepreciated from the day it enters service, understating expense and overstating net income for as long as it stays off the books
• Insurance gaps: a real, in-service asset carries no coverage under the corporate asset schedule
• Duplicate capital spending: capital planning tools show a capability gap that does not exist, so the organization buys equipment it may already own
• Tax distortion: properly capitalized, the asset would change both depreciation deductions and property tax exposure, most often in the company's favor
• Audit exposure: when an auditor tests completeness of the fixed asset register under IAS 16 or ASC 360, an unrecorded in-service asset is a documented completeness failure, not a gray area

“The ghost asset conversation is a records problem. The zombie asset conversation is a process problem, one purchasing decision at a time, made by people who were never asked to think about the fixed asset register.”

Tim Harris, CEO, SoloTruth

Who Is Most Affected?

The zombie asset gap does not land evenly. Some roles and industries carry substantially more exposure than others.

• Fixed asset managers in manufacturing: field and plant-floor purchases are the primary source of zombie assets, and manufacturing's decentralized maintenance spend makes the exposure largest here
• CFOs and controllers in regulated industries: banking, insurance, and utilities carry completeness obligations that a zombie asset directly violates, whether or not anyone has quantified the scale
• Internal audit teams preparing for PCAOB or external audit: completeness testing assumes the register is the ceiling of what exists, and zombie assets break that assumption silently
• Operations and maintenance leaders: the purchases that create zombie assets are usually made in good faith to keep equipment running, not to evade accounting, which is exactly why the fix has to start with process, not blame

What to Look For in a Zombie Asset Solution

Not every approach to fixed asset verification is built to catch equipment that was never recorded in the first place. When evaluating options, look for six capabilities.

1. Continuous evidence capture, not periodic snapshots. A once-a-year count only tests what is already on the list; it has no mechanism for surfacing what is not.
2. Field-operator discovery built into the workflow. The person most likely to notice an untagged piece of equipment is the one standing next to it during normal work, not an auditor sampling a spreadsheet months later.
3. Multi-source evidence combining physical inspection, photos, location data, and document extraction, so a flagged asset arrives with enough context for finance to act on it.
4. Orchestrated workflow governance that routes a newly discovered asset to the right reviewer automatically, instead of relying on someone remembering to escalate it.
5. Human-in-the-loop remediation at the capitalization decision point, where a controller confirms whether the asset meets IAS 16 or ASC 360 criteria before it enters the register.
6. Direct ERP reconciliation so a confirmed asset flows into the subledger without a manual journal entry that can drop or misstate it a second time.

What Good Looks Like

Closing the zombie asset gap is less about a single audit and more about a standing discipline.

1. Reconcile in both directions: check the register against the floor, and the floor against the register, not just one direction.
2. Give field operators a simple way to flag untagged equipment during work they are already doing, not as a separate audit event.
3. Review capitalization thresholds regularly so field and P-card purchases that should be capital are routed correctly the first time, not caught after the fact.
4. Treat every flagged zombie asset as a process signal, not just a one-time correction, and look for the purchasing pattern behind it.
5. Reconcile on a fixed cadence tied to normal field visits, not just at year-end, since the gap accumulates continuously between counts.

Common Misconceptions About Zombie Assets

A few assumptions about zombie assets get repeated often enough to need direct correction.

Misconception: Zombie assets are just a smaller version of the ghost asset problem

Reality: They are the inverse failure. A ghost asset is recorded but gone. A zombie asset is present but was never recorded. The causes, and the fixes, are different.

Misconception: There's a reliable industry statistic for how common zombie assets are

Reality: No credible primary-source prevalence estimate exists. Kroll Advisory names the category in the same research that established the 10 to 30 percent ghost asset figure, but does not quantify it, because the category is inconsistently defined and only becomes visible through routine physical reconciliation, which most companies do not run.

Misconception: A normal annual audit will catch these

Reality: Most audits sample against the register. An asset that exists on the floor but was never entered anywhere does not get sampled, because there is no line item pointing to it. Catching it requires checking the floor independently of the register, not just verifying the register is internally correct.

Frequently Asked Questions

What is a zombie asset in fixed asset accounting?

A zombie asset is equipment that physically exists and is in active use but was never entered into the fixed asset register, usually from a field or maintenance purchase that bypassed capital review.

How is a zombie asset different from a ghost asset?

A ghost asset is recorded in the register but no longer physically exists. A zombie asset is the reverse: it physically exists but was never recorded. Kroll Advisory names both as companion problems.

How common are zombie assets?

No credible primary-source estimate exists. The category is inconsistently defined across sources and only becomes visible during a physical reconciliation, which most organizations do not run routinely.

Why doesn't a standard audit catch zombie assets?

Most audits test completeness by sampling the existing register, not by independently verifying everything physically on-site. An asset with no register entry has no line item to sample against.

How do zombie assets typically get created?

Maintenance or operations teams buy replacement equipment or upgrades on purchase orders or P-cards, often below the threshold that triggers formal capital review, and the purchase never gets routed to the fixed asset register.

What's the financial impact of an unrecorded zombie asset?

Missed depreciation, an insurance gap on an uncovered in-service asset, potential duplicate capital spending, and a documented completeness failure if an auditor is testing under IAS 16 or ASC 360.

How do you actually find zombie assets?

Through continuous, field-based reconciliation that checks the floor against the register in both directions, rather than an annual count that only verifies what the register already lists.

The Number That Doesn't Exist Is the Point

There is no reliable industry statistic for zombie asset prevalence, and there may never be one, because the problem is created by thousands of small, decentralized purchasing decisions that only become visible when someone physically checks the floor against the register.

That is a continuous verification problem, not a once-a-year audit problem, and it requires evidence gathered from the field, not just a review of what the register already says.

This is the gap SoloTruth Asset Relationship Management (ARM) was built to close. ARM verifies the existence, location, and condition of physical assets through continuous field inspection and reconciles that evidence directly with the ERP subledger, so equipment that was never recorded gets surfaced by the people already standing next to it, not discovered years later during an audit.

Book a 30-minute strategy call at calendly.com/tim-harris-solotruth/30min to see how continuous verification changes what your fixed asset register is actually capable of.

Last Updated: August 2026