Could wallboard soap qualify for resale because it remained after creating insulating air voids in the gypsum mixture?

Short answer No. Its purpose was complete once it held bubbles until the plaster hardened, so it was a taxable manufacturing aid even if residue remained.
State
CA
Ruling
Annotation 440.1660
Tax type
Sales and Use Tax
Issued
1953-04-30
Issued by
California State Board of Equalization
Requested by
Board audit staff asking about soap used in wallboard, magnesium retorts, and machinery in leased-land plant sales

Apply this to your situation

This page answers the general question as of 1953. Ask about yours and see what current California tax law says, with citations.

Currency note: this ruling is from 1953
Subsequent statutory amendments, regulation changes, court decisions, or later rulings may have changed the analysis. Treat this page as historical context, not current tax advice. Verify current law before relying on any specific rule, rate, or position mentioned here.
Disclaimer: This is a California State Board of Equalization sales-tax-counsel memorandum dated April 30, 1953, published by CDTFA as support for a sales and use tax annotation. Its wallboard result relies on the petitioner's statement that soap's exclusive function was holding air bubbles until the plaster hardened. The same memorandum separately discusses retorts and plant machinery. Another taxpayer should not treat it as binding and should check current wallboard, foamer, machinery, fixture, manufacturing-aid, component-part, and sales-and-use-tax rules. This summary is informational only and is not legal or tax advice.
About this page: The plain-English summary, reader guidance, and Q&A below were written by Ezel based on the official state tax ruling. The original ruling (linked on this page as a PDF) is the authoritative source for any reliance.
View original ruling (PDF)

Plain-English summary

A wallboard manufacturer used resin soap to capture and hold air bubbles in a gypsum or plaster mixture until it hardened, producing voids that increased insulation.

The soap was a taxable manufacturing aid. Its entire stated purpose was fulfilled when the mixture hardened, making its role similar to a mold. Any soap remaining afterward did not provide a continuing finished-product function.

The memorandum also classified removable and frequently replaced retorts used to manufacture magnesium as machinery and equipment under then-current Ruling 12. It treated affixed machinery sold by a lessee with a lease right of removal as tangible personal property, distinguishing a prior sale where the seller also owned the underlying land.

Citations and references

  • California Sales and Use Tax Ruling 12 (as cited)

Source

Original ruling text

State of California

Board of Equalization

Memorandum

440.1660

To:

Oakland – Auditing (JFR)

From:

Headquarters – Sales Tax Counsel

Subject:

X-----------------------------

Date:

April 30, 1953

Soap
Confirming our telephone conversation of April 28, it is our opinion that soap used to create voids in the plaster mixture, resulting in increased insulation properties of the wallboard being manufactured, is purchased for some purpose other than resale. The soap appears to serve a purpose similar to a mold and we cannot distinguish the purpose from that performed by lace used in the manufacture of clay or porcelain figurines. The Board held that the lace was bought for a purpose other than resale. Even assuming that the soap remains in the finished product, its purpose would appear to have been entirely fulfilled by the time the plaster mixture hardens. X----------------------- states in the petition for redetermination, "The exclusive reason for incorporating this resin soap into the core of the gypsum board products is to capture and hold air bubbles in the plaster mixture until the mixture hardens". (Underscoring added.) After that, the soap does not appear to serve any purpose. Retorts Upon examination of all of the data made available to us, we now view the retorts as "machinery and equipment" under Ruling 12. They are certainly used in performing a manufacturing function (manufacture of magnesium), and are not a part of, or essential to, a structure. Even regarding the furnace as a structure, the retorts are not necessary to the functioning of the furnace. They can be readily removed, and must be frequently replaced. Sale of X---------------------------- Plants It is our understanding that the owner of these plants is a lessee of the land, and has the right under the lease to remove the affixed machinery and equipment at any time without the necessity of obtaining permission of the lessor. Consistent with our administrative practice we think the sale of the machinery and equipment is a sale of tangible personal property. We distinguish the sale of the X--------------------- plant by X--------------------- Company covered by

our letter of January 11, 1950, upon the basis that at the time of the sale the seller owned the underlying realty, there being thus no separate ownership of the affixed machinery and equipment. Thus, in the hands of the seller, the affixed machinery and equipment was real property.

E. H. Stetson
EHS:ph

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