One of the richest islands in the Philippines is Luzon, which includes Metro Manila, the center of government, business, and education. It houses many of the nation’s major industries, financial institutions, and multinational companies. Luzon also contains agricultural and industrial provinces like Batangas, Cavite, Pampanga, and Bulacan that contribute greatly to the country's economy.If you're referring to a more specific island, Mactan Island in Cebu is considered economically rich due to its tourism industry, international airport, and export processing zones. Similarly, Boracay is a high-income island from tourism. These islands may not be the largest but generate substantial revenues due to their development and attractions.