What is the main source of funding for the federal government?

The primary source of funding for the federal government is indeed income tax. This tax is levied on individuals and businesses based on their earnings and serves as a significant means for the government to generate revenue. Individual income tax accounts for a substantial portion of federal revenue, collected through a progressive tax system where higher earnings are taxed at higher rates. This approach ensures that funding for government services, infrastructure, and various programs is sustained through the wealth generated within the economy.

Sales tax, corporate tax, and property tax, while they do contribute to funding at various levels of government, are not the primary source for federal funding. Sales taxes are typically imposed at the state level, corporate taxes provide revenue but do not match the scale of income tax collected from individuals, and property taxes mainly fund local and state government initiatives.