GR 86785; (November, 1991) (Digest)
G.R. No. 86785 November 21, 1991
COMMISSIONER OF INTERNAL REVENUE, petitioner, vs. COURT OF APPEALS and ATLAS CONSOLIDATED MINING AND DEVELOPMENT CORPORATION, respondents.
FACTS
Atlas Consolidated Mining and Development Corporation, a mining company, extracted limestone from its own land as a necessary step to reach underlying copper ore deposits. This limestone was processed into lime on-site and used exclusively as a flotation agent in its mill to produce copper concentrate. The lime itself did not become part of the final copper concentrate product and was not sold commercially; it was consumed in the process and discarded as waste tailings. For internal cost accounting, Atlas assigned an estimated production cost to this lime.
Based on this internal cost figure, Atlas paid ad valorem taxes on the lime for the period from the first quarter of 1974 to the third quarter of 1975. It later filed a claim for a tax credit of P170,476.64, arguing the tax was erroneously paid. After the Commissioner of Internal Revenue failed to act, Atlas sought relief from the Court of Tax Appeals (CTA), which granted the tax credit. The Court of Appeals affirmed the CTA’s decision.
ISSUE
Whether the limestone dug out and processed into lime, used internally in the production of copper concentrates, is subject to the ad valorem tax under Section 243 of the National Internal Revenue Code.
RULING
The Supreme Court denied the petition and affirmed the Court of Appeals. The ad valorem tax is a severance tax imposed on the privilege of extracting minerals from the earth, not a tax on the minerals themselves. The legal logic hinges on the principle that a tax on the business or privilege of mining should not extend to a separate tax on an activity that is a necessary and integral part of the same mining operation.
The Court ruled that the extraction and processing of the limestone into lime was not a separate, taxable activity but an essential and incidental step in Atlas’s primary business of mining copper. The lime had no commercial market value and was not removed from the mining concession for sale. Taxing this internal, consumable input would constitute an impermissible double taxation on the same privilege of mining. The Court emphasized that tax statutes are construed strictly against the government, and no tax is imposed beyond a statute’s clear import. Furthermore, it deferred to the expertise of the CTA, finding no abuse of discretion in its factual and legal conclusions.