G.R. No. L-30644 March 9, 1987
COMMISSIONER OF INTERNAL REVENUE, petitioner, vs. FIREMAN’S FUND INSURANCE COMPANY and the COURT OF TAX APPEALS, respondents.

FACTS

Fireman’s Fund Insurance Company, a resident foreign insurance corporation, was assessed by the Commissioner of Internal Revenue for deficiency documentary stamp taxes and compromise penalties totaling P81,406.87 for the years 1952 to 1958. The assessment was based on the finding that the company failed to affix the required documentary stamps directly onto the insurance policies it issued. Instead, from 1952 to 1956, the company purchased stamps and affixed them to its monthly statements of business. From 1957 to 1958, it affixed the stamps to the corresponding pages of its policy register. These primary records (monthly statements and policy register) were subsequently lost. The company had informed the Commissioner of the loss and presented secondary evidence, such as copies of applications for manager’s checks and bank vouchers, to prove it had purchased the requisite stamps.
The Commissioner denied the company’s protest, leading to an appeal before the Court of Tax Appeals. The tax court reversed the Commissioner’s decision, holding that while the mode of affixture was irregular, the tax had substantively been paid. The Commissioner then elevated the case to the Supreme Court, arguing that affixture on the policy itself was mandatory for the tax to be considered paid.

ISSUE

Whether a taxpayer who has purchased the correct amount of documentary stamps but affixed them to accounting records instead of the taxable documents themselves can be compelled to pay the tax a second time.

RULING

The Supreme Court affirmed the decision of the Court of Tax Appeals and dismissed the petition. The legal logic centers on the distinction between the obligation to pay the tax and the prescribed mode of proving payment. The Court held that the substantive requirement is the payment of the tax revenue to the government. The affixture of the physical stamp to the specific document is a procedural requirement designed to provide evidence of that payment. In this case, the taxpayer presented uncontroverted secondary evidence—bank records and vouchers—to conclusively prove it had purchased and paid for the stamps corresponding to all policies issued. The government had already received the revenue, which was the primary purpose of the tax imposition.
The Court applied the rule of strict interpretation of tax laws against the government and in favor of the taxpayer in cases of doubt. To require payment again would constitute unjust enrichment by the government at the expense of the taxpayer, as it would collect the same tax twice for the same transactions. The irregularity in the place of affixture, while potentially subject to a separate penalty, does not justify negating the fact of payment. The compromise penalties were also correctly disallowed, as a compromise requires mutual consent and cannot be unilaterally imposed by the Commissioner.