The Docket · Brief · Pro level
Scott Paper v. Commissioner: primary use, function, and dual-purpose utilities
Scott Paper Co. v. Commissioner, 74 T.C. 137 (1980), established the primary-use and functionality analysis for special-purpose structures and utility systems — the doctrinal basis for allocating electrical and steam capacity between equipment and building service in modern cost segregation studies.
Scott Paper Co. v. Commissioner, 74 T.C. 137 (1980), is the authority behind every load study. Scott Paper claimed the investment tax credit for the electrical distribution, steam, and related utility systems in its paper mills, and the Tax Court held that those systems qualified as Section 38 property to the extent their function was to serve the manufacturing process rather than the buildings — endorsing an allocation of dual-use systems according to primary use and function. That analysis, preserved for MACRS by Hospital Corp of America v. Commissioner, 109 T.C. 21 (1997), is the doctrinal basis on which modern cost segregation studies split electrical, plumbing, and HVAC capacity between short-life equipment service and 39-year building service.
The dispute
Scott Paper's mills were industrial complexes in which the line between building and machine blurred. High-capacity electrical distribution fed paper machines; steam systems served both process equipment and space heating; water and other utilities ran throughout. The company claimed the investment tax credit for these systems. The Commissioner responded with the structural-component definition in Treas. Reg. §1.48-1(e), which lists electric wiring, plumbing, and central heating among a building's structural components — arguing that utility systems installed in a building are part of it, full stop.
The holding
The Tax Court refused to read the regulation that mechanically. The structural-component list, it reasoned, describes systems that relate to the operation or maintenance of a building; it does not capture systems whose function is to serve machinery that happens to be housed in a building. Examining the mills system by system, the court held that utility capacity serving the manufacturing process qualified as Section 38 property, while capacity serving building functions — general illumination, comfort conditioning, ordinary building services — did not. Where a single system did both, the court accepted allocation between the qualifying and non-qualifying portions based on the system's use, rather than forcing an all-or-nothing answer.
The reasoning that matters
Three doctrinal moves give the case its reach. First, function over form: identical copper wire is structural or personal depending on what it exists to do, so classification follows the load, not the material. Second, severability: a utility system is not an indivisible whole; its capacity can be apportioned between process service and building service, which converts a binary legal question into a measurable engineering one. Third, primary purpose at the margin: for components not cleanly divisible, the court asked what the system was predominantly designed and used to do. Together these moves supply the method modern practitioners call a load study — metering or modeling panel-by-panel demand to quantify the equipment share of electrical service, the process share of steam or water, the exhaust share of HVAC.
What it means for claims today
After Hospital Corp of America confirmed that ITC-era classification governs MACRS, Scott Paper's allocation method became the backbone of the utility sections of any industrial, medical, or restaurant study, with recovery periods then assigned under the class lives in Pub 946 and Section 168 of the Internal Revenue Code. The IRS accepts the framework — the Cost Segregation Audit Techniques Guide discusses allocating building systems between structural and equipment service — but it polices the measurement. An allocation asserted as a flat percentage without panel schedules, riser diagrams, or demand calculations is a conclusion in search of evidence, and examiners treat it accordingly. The test also limits as it liberates: in properties where the "process" is inhabiting the building — the residential facts of AmeriSouth XXXII v. Commissioner, T.C. Memo 2012-67 — the primary function of nearly every system is building service, and Scott Paper offers little help.
Two practice notes follow. Special-purpose industrial structures deserve the same functional scrutiny as their utilities — the closer a structure is to housing a process rather than people, the stronger the analysis. And the allocation workpapers are part of the return position: they should survive in the file as long as the depreciation they support. See audit readiness and documentation.
Related reading
- How cost segregation became law — the functionality strand in context
- Hospital Corp of America v. Commissioner — carrying the test into MACRS
- The Cost Segregation Audit Techniques Guide — how examiners test load allocations
Frequently asked questions
- What did Scott Paper v. Commissioner hold?
- In Scott Paper Co. v. Commissioner, 74 T.C. 137 (1980), the Tax Court held that utility systems in the taxpayer's paper mills qualified for the investment tax credit to the extent they served manufacturing machinery rather than the buildings, allocating dual-use systems by their primary function. The decision legitimized capacity-based allocation of electrical, steam, and similar systems between Section 1245 property and structural components.
- What is the primary-use test in cost segregation?
- The primary-use test, anchored in Scott Paper Co. v. Commissioner, 74 T.C. 137 (1980), classifies a utility system by asking what function it predominantly serves. Capacity dedicated to production or process equipment is Section 1245 personal property; capacity serving building operation — general lighting, comfort HVAC, restrooms — is a structural component. Modern studies implement the test through engineering load studies that measure each use's share.