Federal Revenue and Taxes

The federal government raises most of its money from a few big sources—individual income taxes, payroll taxes, corporate taxes, and smaller levies like excise taxes and tariffs—to pay for programs from national defense to Social Security and public health.

How the money is raised

Individual income taxes are the largest single source of revenue, while payroll taxes fund Social Security and Medicare; corporate taxes and smaller streams such as customs duties add the rest. The agency that collects and enforces these taxes is the Role of the IRS.

Tariffs and fees

Tariffs are a modest revenue source but also a trade policy tool—learn how tariffs work, how they’re calculated, and where that money goes.

Policy choices matter

Tax design—whether progressive, regressive, or flat—shapes who pays and how much revenue is available; debates about payroll taxes, tax credits, and funding priorities (for example, agency budgets like the FDA) drive policy changes. Read more on Federal Tax Credits, the larger Tax Policy and Inequality debate, and discussions about Payroll Taxes.

Smaller revenue ideas—such as new visa fees—surface in funding debates; see the H-1B visa fee debate and practical options like How to Donate to federal programs for additional context.