The federal income tax is the largest source of revenue for the US government.
Federal income tax is used for a variety of expenses, ranging from building and repairing the country’s infrastructure to improving education and public transportation and providing disaster relief.
Federal income taxes are based on your income and filing status; the same federal tax rates apply to everyone, no matter where they live or work.
Federal income taxes are collected by the federal government, while state income taxes are collected by the individual states where the taxpayer resides and earns income.
Alaska, Florida, Nevada, South Dakota, Tennessee, Texas, Washington, and Wyoming have no state income tax.