PROBLEM 1:
Maria Ressa, an award-winning Filipino journalist, has the following
income streams during 2023:
• Salary from her media company: ₱1,200,000
• Rental income from her condo in Makati: ₱200,000
• Interest from her bank savings: ₱50,000
• Dividends from a domestic corporation: ₱100,000
Required: Calculate Maria’s total tax liability.