What Is the Largest Source of Federal Revenue From Taxes?

The largest source of federal revenue from taxes in the United States comes from individual income taxes, followed by payroll taxes. Individual income tax accounts for approximately 46 percent of federal revenue from taxes, according to the White House Office of Management and Budget.

The total revenue amount that the federal government will accumulate from taxes in 2015 will reach about $3.3 trillion, according to U.S. President Barack Obama's budget request. In addition to individual income taxes and corporate payroll taxes, the money will come from other taxes like corporate income taxes, excise taxes and customs duties. There are a number of miscellaneous taxes that make up about 5 percent of total tax revenue for the federal government.