Are the fuels and electricity a clean-room manufacturer uses to build clean rooms exempt from Utah sales tax, and are 'clean rooms' themselves always exempt manufacturing equipment?

Plain-English summary

A manufacturer of "clean rooms" (controlled, filtered-air enclosures used in electronics and other precision manufacturing) asked the Utah Tax Commission three things: whether a clean room counts as tangible personal property, whether the manufacturer could buy fuel and electricity tax-free to build clean rooms, and whether clean rooms are always exempt "manufacturing machinery and equipment" under the Commission's manufacturing exemption (Rule R865-19-85S and former § 59-12-104(16)).

The Commission, adopting its Auditing Division's recommendation, answered narrowly. It agreed that the clean rooms this taxpayer manufactures are personal property, and it agreed the taxpayer -- because it is itself a manufacturer -- can buy fuel and electricity tax-free for use in manufacturing the clean rooms. But it declined to say clean rooms are always exempt manufacturing equipment. That question depends on what each of the taxpayer's own customers does with the clean room after buying it: a clean room used directly in a customer's manufacturing process might qualify for the customer's own exemption, but a clean room used for something else (storage, general workspace, quality inspection outside the manufacturing process, etc.) would not.

What this means for you

Manufacturers who build equipment or specialized rooms/enclosures

If you manufacture something (like a clean room) that your fuel and electricity go into producing, the manufacturer's fuel/electricity exemption can apply to your purchases regardless of how your customer later uses what you sold them. That is a separate question from whether your finished product is exempt equipment in your customer's hands.

Businesses buying a clean room (or similar specialized equipment)

Don't assume a clean room -- or any single category of equipment -- is automatically tax-exempt "manufacturing machinery and equipment." The Commission was explicit that this turns on your own facts: how you actually use the equipment in your manufacturing process. The same product can be exempt for one buyer and taxable for another.

Accountants and tax professionals

This ruling illustrates that Utah's manufacturing exemption analysis is use-based, not product-based: the Commission repeatedly refuses to bless an entire product category as exempt and instead asks how the specific purchaser uses it. Expect this same use-driven framework in later Utah manufacturing-exemption rulings.

Common questions

Q: Does this ruling mean clean rooms are always exempt from Utah sales tax?
A: No. The Commission specifically declined to make that determination. Whether a clean room qualifies as exempt manufacturing machinery/equipment depends on how the buyer uses it.

Q: What did the Commission actually decide?
A: Two things: (1) the clean rooms this particular manufacturer builds are tangible personal property, and (2) that manufacturer can buy the fuel and electricity used to build them tax-free, because it is a manufacturer.

Q: Can I rely on this ruling for my own clean-room purchase?
A: Not as binding precedent -- it binds the Commission only for the taxpayer and facts it was issued to. It also cites 1989-era statute and rule numbers that have likely been renumbered since; confirm the current version of the manufacturing exemption before relying on it.

Citations and references

Statutes and rules (as cited in the 1989 ruling; confirm current numbering):

• § 59-12-104(16), Utah Code -- manufacturer's exemption for fuels and electricity used in manufacturing
• Utah Sales Tax Rule R865-19-85S -- manufacturing machinery and equipment exemption

Source

• Landing page: https://tax.utah.gov/commission/rulings/
• Original page: https://files.tax.utah.gov/tax/commission/ruling/89-001.htm

Original ruling text

Response
December 1, 1989

XXXXX

Re:
Sales Tax - Clean Rooms

Dear
XXXXX:

This
letter is in response to your February 16, 1989 request for a Tax Commission
ruling on whether a "clean room" is tangible personal property and
whether XXXXX is entitled to exemption on fuels and electricity purchases. You also wanted to know if "clean
rooms" could always be treated as manufacturing machinery and exempt under
Sales Tax Rule R865-19-85S and �59-12-104(16).

Although
your inquiry was framed as a request for declaratory judgment, Tax Commission
policy is to initially treat all such inquiries as requests for advisory
opinions. As such, it was referred to the Tax Commission's Auditing Division
for their analysis and recommendation. The division recommendation is as
follows:

1. The "clean rooms," as manufactured
   by XXXXX and described in their present literature, are personal property.

2. Your client, XXXXX is a manufacturer who is
   entitled to make tax-free purchases of fuels and electricity for use in
   manufacturing "clean rooms."

3. Auditing Division staff cannot make a
   recommendation that "clean rooms" are always manufacturing machinery
   or equipment. Whether they qualify depends entirely on the use made of them by
   XXXXX's customers.

Based
on the facts presented in your letter, we are in agreement with the Auditing
Division's recommendations. Obviously, if there are deviations from these
facts, this opinion may be negated.

If
you do not agree with this determination, you may appeal to the Tax Commission
for a formal hearing. The results of that hearing would constitute a
declaratory judgment and be appealable to the Utah Supreme Court. A notice of
appeal rights is attached.

For The Commission,

Joe
B. Pacheco

Commissioner