This case involves construction of a revenue law of this state, specifically the Manufacturers’ License Tax, §§ 150.300 et seq., RSMo 1969, which provide (§ 150.310), in part, that: “Every manufacturer in this state shall be licensed and taxed on all raw material and finished products, as well as all the tools, machinery and appliances used by them, in the same manner as provided by law for the taxing and licensing of merchants . . . ”
By notice dated 4 June 1974, the St. Louis County Board of Equalization raised the inventory valuation of McDonnell-Douglas Corporation, for purposes of the 1974 Manufacturers’ License Tax, from $35,642,766 to $44,187,766, which increased the assessed valuation from $11,880,922 to $14,729,250. It seems agreed that said increase reflected the added value given to work-in-process in excess of the value of the raw material content of such work-in-process.
McDonnell-Douglas appealed to the State Tax Commission which reinstated the lesser figure after concluding that § 150.310 “does not contemplate or authorize the taxation of work-in-process, other than the true value of the material content thereof . . ” The county sought review of that decision (§§ 536.100 et seq., RSMo 1969) where the instant case was consolidated with seven other actions pending on the same issue. By judgment, the trial court affirmed the commission.
The county has appealed to this court only with respect to McDonnell-Douglas although General Steel Industries, Inc., and Debron Corporation, parties to the consolidated action in the trial court, have filed a brief as amicus curiae.
The first question is whether, for purposes of the manufacturers’ tax, work-in-process should be assessed only to the ex *336 tent of the aggregate cost of raw material content or whether work-in-process valuation should include “value added” to raw materials, if any, by labor and overhead during the manufacturing process.
The statute in question, and heretofore noted, does not refer explicitly to “work-in-process” but allows a tax on all “raw material and finished products . . . ” Nevertheless, this court has held that work-in-process is subject to the tax as “raw materials.”
Mesker Brothers Industries, Inc. v. Leachman,
Article X, § 4(b), of the Missouri Constitution requires that all real and tangible personal property be assessed for tax purposes at the value as may be fixed by law. This has been interpreted to mean that “ . . . such property must be assessed on the basis of ‘actual or real value.’ ”
Robert Williams & Co. v. State Tax Commission,
In
Stephen and Stephen Properties, Inc. v. State Tax Commission,
The county cites three cases from foreign jurisdictions thought to sustain its position.
The
first
is
Aeronautical Communications Equipment, Inc. v. Metropolitan Dade County,
The
second
is
Appeal of AMP, Inc.,
The
third
is
General Motors Corp. v. State Board of Tax Appeals,
The county, thereafter, cites
American Mfg. Co. v. City of St. Louis,
Respondent, McDonnell-Douglas, does not refer us to any ease, factually comparable, which rejects the county’s position. Argument is made, however, that (1) “there is no definition in the record defining the term ‘added value,’ no description of the exact composition or make-up of that figure, and no evidence as to how the ‘value added’ figure was computed,” and that (2) “The Commission’s power of equalization and review includes the power to choose among methods of valuation and to make those methods uniform . . . ” and that “The Court may not substitute its discretion for the discretion vested in the Commission in this area unless the Commission’s findings involve an abuse of discretion.” The two points will be considered in order.
As to point (1), it is true that speculative assumptions cannot be approved in cases involving the assessment of taxes.
Frontier Airlines, Inc.
v.
State Tax Commission,
As to point (2), respondent relies on the limitations placed on appellate review by this court in
Xerox Corporation v. State Tax Commission,
We reaffirm our holding in the
Xerox
case but find it inapplicable to the immediate issue. Where an administrative decision resolves an issue of fact, a reviewing court may not substitute its own judgment for that of the agency, if its findings of fact are supported by competent and substantial evidence. “On the other hand, where an administrative decision is clearly based upon the agency’s interpretation or application of the law, the administrative conclusions of law and decision based thereon are matters for the independent judg
*338
ment of the reviewing court, and correction where erroneous.”
State Board of Registration for Healing Arts v. Masters,
We have no difficulty in finding that this court has the power to interpret the statute in question and decide the question of law presented without restraint or restriction.
The two decisions of the Supreme Court of the United States cited by amicus curiae do not dissuade us. In
Dobson v. Commissioner of Internal Revenue,
We pause to make an observation which tends to simplify the underlying problem, i. e., raw materials may depreciate or appreciate in value as they proceed along an assembly line — a possibility which exists herein. For that reason we are not in a position to declare, in this case, that an airplane wing only one turn of a screwdriver from being a finished product has a “true” or “actual” value only of its raw material content. Necessarily, we must reverse the holding of the Tax Commission to the contrary, which was predicated upon its resolution of a question of law and not upon a factual finding.
We hold that the statute in question shows an intent to assess all of a manufacturer’s inventory for licensing purposes. Under the law, this must entail an assessment of such property that includes all relevant factors to arrive at a true or actual value. In doing so, the Commission should follow the dictates of the Xerox, case, supra, in designing a formula for assessment, and absent “an abuse of discretion” this case can provide that guidance the parties have assigned to it.
The judgment is reversed and the cause is remanded for further proceedings consistent with this opinion.
