G.R. No. L-19577, October 30, 1964
IN THE MATTER OF THE PETITION OF YAP BUN PIN TO BE ADMITTED A CITIZEN OF THE PHILIPPINES, YAP BUN PIN alias VICENTE YAP, petitioner-appellee, vs. REPUBLIC OF THE PHILIPPINES, oppositor-appellant.

FACTS

Petitioner Yap Bun Pin, a Chinese citizen, sought naturalization. He arrived in the Philippines in 1929 and resided in Quezon. Married to Juanita Tan with five children, he worked as a copra dealer. The Republic opposed his petition, arguing he lacked a lucrative income, his character witnesses were insufficient, his use of an alias showed improper conduct, and he failed to mingle socially with Filipinos. The Court of First Instance of Quezon granted his petition, prompting this appeal by the government.
At trial, petitioner presented his 1960 income tax return showing a net income of P4,485.27. He testified his net income was P5,000 in 1960 and P6,000 in 1961. He later submitted, via brief and manifestation on appeal, his 1961 and 1962 tax returns indicating higher incomes from copra dealing, commissions as an administrator, and farming. The trial court found his income sufficient, considering the lower cost of living in Gumaca, Quezon.

ISSUE

Whether petitioner Yap Bun Pin possessed a lucrative occupation as required by the Naturalization Law.

RULING

The Supreme Court reversed the lower court’s decision and denied the petition. The core legal logic centers on the statutory requirement of a “lucrative occupation,” interpreted as an income sufficient to support the applicant and his dependents in reasonable comfort, considering the prevailing cost of living. The Court held petitioner’s income was inadequate. His 1960 income of P4,485.27 was deemed insufficient for a family of seven. The 1961 and 1962 tax returns, showing incomes of P5,234.04 and P8,067.24 respectively, could not be considered as they were new evidence submitted only on appeal, violating the settled rule that an appeal must be decided solely on the evidence presented at trial.
Even assuming these later returns could be considered, the Court found the declared incomes still non-lucrative. The claimed additional income sources—commissions from administering his mother’s plantation and farming—were dubious. His mother’s own modest income made a commission unlikely, and he owned no farm. Citing precedent, the Court ruled that incomes of P8,687.50 (for a family with a wife and five children) and P5,980.00 (for a wife and three children) had previously been declared inadequate. Petitioner’s comparable income, even if increasing yearly, remained insufficient given the high cost of living and his substantial family obligations. This failure to meet the lucrative income requirement was fatal to his application.