 When considering all three branches of government, including all government-owned corporations and municipalities, the government of Puerto Rico's annual expenditures can reach to more than $28 billion.The central government's main source of revenue is income tax imposed on individual citizens and private companies, which can amount to approximately $5.5 billion.Other significant sources of revenue include excise taxes on imports, cigarettes, liquor, hotel rooms, cement, and vehicles ($2 billion); and lotteries ($870 million).