Scott Paper and Cost Segregation: How Functional Allocation Applies to Electrical Systems

Electrical systems create a deceptively simple cost segregation question: if a building has one interconnected electrical distribution system, should the entire system receive the same treatment?

The Scott Paper Co. v. Commissioner case provides an important framework for answering that question.

As discussed in the IRS Cost Segregation Audit Technique Guide, Scott Paper focused on the ultimate uses of electrical power. Rather than treating the entire electrical distribution system as one indivisible asset for classification purposes, the analysis distinguished power associated with qualifying machinery from power associated with the operation or maintenance of the building.

The ATG calls this the functional allocation approach.

That principle remains important for commercial property analysis because electrical classification cannot always be determined from the fact that something is "electrical." The engineering question is more specific:

What does the electrical system actually serve?

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Key Takeaways

1. Scott Paper focused on the ultimate uses of electrical power rather than treating the entire electrical distribution system as having one classification.
2. The ATG identifies the Scott Paper methodology as the functional allocation approach.
3. Functional allocation can divide portions of a building's electrical distribution system between § 1245 property and § 1250 property based on what the system serves.
4. The ATG's issue-specific guidance uses electrical demand load, not annual electricity consumption, to perform the functional allocation analysis.
5. The ATG applies the functional allocation approach to primary and secondary electrical distribution systems, while separately addressing branch circuits and hook-ups.
6. Electrical design plans and the equipment served are central to a supportable engineering analysis.
7. Scott Paper is important, but the ATG also discusses competing judicial approaches and does not state that every taxpayer must use functional allocation.

What Happened in Scott Paper?

Scott Paper involved the electrical distribution system of a paper manufacturing facility.

The classification issue arose because electricity within the facility did not serve only one function. Portions of the electrical capacity supported machinery used in the taxpayer's business, while other portions supported the operation and maintenance of the building.

That distinction mattered.

The ATG explains that the Tax Court focused on the ultimate uses of power. Electricity used for building operation or maintenance was distinguished from electricity used for the taxpayer's machinery.

This led to an allocation rather than an all-or-nothing treatment of the electrical distribution system.

The ATG identifies this as the functional allocation approach and later describes Scott Paper as a landmark case establishing the functional allocation method for allocating components of an electrical distribution system between § 1245 property and § 1250 property.

The lesson extends beyond a paper plant.

The case demonstrates why an interconnected building system may still require analysis of the different functions it serves.

What Does Functional Allocation Mean?

Functional allocation means looking at the function served by the electrical distribution system and allocating appropriate portions of that system accordingly.

Chapter 8 of the ATG develops this concept in considerably greater engineering detail than the earlier legal-framework discussion.

The ATG describes the functional allocation approach as allocating the cost of a building's electrical distribution system proportionally, based on the electrical demand load of the property being served.

In practical terms, the analysis asks where the building's electrical capacity is going.

Some electrical capacity may support building operation and maintenance.

Other electrical capacity may serve tangible personal property or other property relevant to the § 1245 analysis.

The existence of one electrical infrastructure does not eliminate those different functions.

That is why the engineering principle is:

Follow what the electrical system serves.

Why Doesn't the "Electrical" Label Answer the Classification Question?

Because a construction trade describes who installed a system, not necessarily the depreciation treatment of every component within that system.

An electrical contractor may install infrastructure supporting many different end uses.

Simply grouping all of that work under an accounting category called "electrical" does not answer what the installed property serves.

This distinction becomes especially important in facilities with substantial operational equipment.

A building may contain electrical infrastructure serving general building needs while also supplying power associated with specific machinery or other tangible personal property.

Those functions have to be understood before the classification analysis can be completed.

CostSegRx engineers therefore look beyond the contractor label.

The analysis can involve electrical drawings, panels, equipment schedules, design information, connected equipment, demand loads, and the relationships between different portions of the distribution system.

The question is not merely:

Who installed it?

The more useful engineering question is:

What does it serve?

How Does the ATG Apply Scott Paper to an Electrical Distribution System?

The ATG's issue-specific electrical guidance turns the Scott Paper concept into a practical analytical procedure.

The process begins by evaluating the electrical distribution system itself, including whether relevant components are inherently permanent under the applicable analysis.

The next question is functional.

Does the electrical distribution system serve the operation or maintenance of the building, or does it supply power to tangible personal property or other tangible property relevant to the classification analysis?

From there, the ATG describes an allocation based on electrical demand load.

The building's electrical design plans are studied, and the demand loads associated with § 1245 property and § 1250 property are tallied. Those loads can then establish proportions for allocating the applicable electrical distribution system.

This is a fundamentally different exercise from looking at the total cost of the electrical contract and assigning one classification to the entire amount.

The system is being analyzed according to the functions it supports.

Why Does Electrical Demand Load Matter?

Electrical demand load matters because the ATG uses it as the basis for proportionally allocating the applicable electrical distribution system.

Demand load is an electrical design concept.

The ATG describes it as the factored load used in designing the overall electrical system. It reflects the electrical demand that the system is designed to accommodate.

That makes it relevant to the capacity and design of the electrical infrastructure.

Suppose an electrical distribution system supports several categories of equipment and building loads. The engineering analysis is not simply interested in whether electricity eventually reaches each category.

It is interested in the design demand those loads place on the electrical distribution system.

That provides a technical basis for determining how much of the applicable system supports different functions.

For CostSegRx engineers, this means the analysis may require tracing electrical relationships beyond the most visible endpoint.

A piece of equipment is only one part of the story. The relevant analysis can involve the electrical infrastructure supplying it and the demand that equipment places on the system.

Why Isn't Annual Electricity Consumption the Same Thing?

Because electrical demand load and energy consumption measure different things.

This is one of the most useful distinctions in the ATG's electrical guidance.

Annual electricity consumption generally measures energy use over time, commonly expressed in kilowatt-hours.

Demand load concerns the electrical load used in designing the system.

Those are not interchangeable measurements.

A piece of equipment can have a meaningful design demand even if it operates only during limited periods. Another load may consume substantial energy over the course of a year because it operates continuously.

Annual energy consumption therefore does not necessarily represent the electrical capacity for which the distribution system was designed.

The ATG specifically distinguishes the functional allocation analysis from an energy-efficiency study and states that an energy-efficiency study should not be used as part of the functional allocation approach.

For an investor reviewing a cost segregation study, this is an important technical checkpoint.

An allocation labeled "electrical analysis" is not necessarily the Scott Paper methodology merely because it uses electricity data.

The underlying measurement matters.

What Parts of the Electrical System Does Functional Allocation Cover?

The ATG places an important boundary around the methodology.

Its issue-specific guidance applies functional allocation to the building's primary and secondary electrical distribution systems.

The ATG separately addresses branch circuits and hook-ups and states that they are not part of the building electrical distribution system for purposes of this functional allocation methodology.

That distinction prevents the Scott Paper principle from becoming an overly broad rule applied indiscriminately to every electrical component in a property.

It also illustrates why system boundaries matter in cost segregation.

An electrical system is not simply one undifferentiated collection of conduit, conductors, panels, breakers, receptacles, connections, and equipment.

Different portions of the electrical infrastructure can require different analytical treatment.

CostSegRx engineers therefore need to identify what portion of the electrical system is actually being analyzed before applying the appropriate methodology.

What Should an Engineer Examine?

A supportable functional allocation analysis begins with understanding the electrical system as a system.

The ATG specifically identifies the building's electrical design plans as part of the demand-load analysis.

Depending on the available project information, the engineering investigation can involve:

• electrical design plans
• one-line diagrams
• panel information
• equipment schedules
• connected equipment
• primary electrical distribution
• secondary electrical distribution
• electrical demand loads
• the property served by those loads
• available construction and cost documentation

The objective is not to search the drawings for assets that produce a desired depreciation result.

The objective is to understand how the electrical infrastructure functions.

CostSegRx engineers trace the relationship between the distribution system and the property it serves. That system-level analysis provides the physical basis for applying the relevant classification framework.

Function comes before classification.

Does Scott Paper Mean All Equipment-Serving Electrical Property Is § 1245 Property?

No.

Scott Paper should not be reduced to a shortcut that says electrical property becomes § 1245 property whenever equipment is somewhere downstream.

The ATG's methodology contains multiple analytical steps.

The nature of the electrical distribution property itself matters. The property served matters. System boundaries matter. The inherently permanent analysis can matter. The relationship to building operation and maintenance matters. The applicable authority matters.

The functional allocation approach provides a methodology for analyzing these relationships. It does not eliminate the need for them.

This distinction is particularly important because electrical infrastructure can be deeply integrated into a building while simultaneously supporting different functions.

The correct analysis therefore depends on the facts of the property rather than on a universal electrical classification rule.

Was Scott Paper the Only Judicial Approach?

No.

The ATG discusses a history of differing judicial approaches to electrical distribution systems.

Among the cases it discusses is A.C. Monk and Co., Inc. v. United States, where the Fourth Circuit rejected functional allocation under the circumstances before it. The ATG also discusses decisions including Illinois Cereal Mills, Inc. v. Commissioner and Morrison, Inc. v. Commissioner in the development of the functional approach.

That history is important because Scott Paper should not be presented as though every court analyzed electrical distribution systems in precisely the same way.

The ATG nevertheless gives functional allocation substantial attention. Its issue-specific guidance provides a detailed methodology for applying the approach, and the ATG discusses the Service's acceptance of the functional allocation approach in the relevant historical guidance.

For readers, the important point is not that Scott Paper erased every competing view.

It is that Scott Paper became a foundational authority for analyzing an electrical distribution system according to the functions it serves.

Does the ATG Require Every Study to Use Functional Allocation?

No.

The ATG's issue-specific electrical guidance states that a taxpayer may use other methods to reasonably allocate an electrical distribution system between § 1245 and § 1250 property.

Functional allocation is therefore an important methodology discussed by the ATG, not a universal statement that every property must be analyzed with exactly the same calculation.

The available property information matters.

So does the engineering evidence.

A building with detailed electrical drawings and design-load information may present a different analytical record from an acquired building with limited documentation.

The method used should remain tied to the actual property, available evidence, applicable authority, and supportable engineering analysis.

Practical Takeaway

Scott Paper teaches a broader cost segregation lesson that reaches well beyond electrical engineering:

Interconnected systems can still serve different functions.

That means classification should not stop at the trade label or at the fact that components are physically connected.

For electrical distribution systems, the ATG's functional allocation methodology follows the system to what it serves and uses electrical demand load to analyze the applicable allocation.

That requires more than identifying panels or finding machinery on a property.

It requires understanding the electrical design.

CostSegRx engineers examine how the applicable electrical infrastructure relates to building operation, tangible personal property, and other end uses. Drawings, system boundaries, design demand, physical relationships, and documentation all contribute to that analysis.

For commercial real estate investors, the lesson is straightforward:

When a cost segregation study analyzes a complex electrical system, ask what engineering supports the allocation.

A percentage without the underlying functional analysis does not explain the system.

Closing

Scott Paper matters because it shifted attention from the electrical system's broad label to the ultimate use of the power it distributes.

The ATG carries that principle forward through its functional allocation guidance, including the use of electrical demand load and the distinction between primary and secondary electrical distribution systems and separately analyzed branch circuits and hook-ups.

The result is a useful engineering framework for understanding a complicated building system.

Do not classify the system simply because it is electrical.

Understand the system.

Identify its boundaries.

Determine what it serves.

Then apply the appropriate classification analysis.

That is the enduring engineering lesson behind Scott Paper.