Many of the roads, schools, clinics, buses, and police departments in your town are paid for partly by federal dollars, even though the federal government rarely runs them directly. Grants are the main way Washington shapes policies it does not administer itself, and they are a central feature of cooperative federalism.
This guide follows federal money from Congress to your town: the types of grants, how they are distributed, the conditions attached, how spending is tracked, and the debates over control.
Federal grants to state and local governments grew from a small share of the budget in the 1950s to more than 1 trillion dollars a year today. Medicaid accounts for more than half of the total. Other large streams include highway and transit funds, nutrition programs such as school meals and WIC, Title I and special education funds for schools, housing assistance, and public health grants. Temporary programs can add hundreds of billions, as pandemic relief did in 2020 and 2021.
In early 2025 the administration paused and canceled many grants and added new conditions on immigration enforcement, diversity programs, and other priorities. States, cities, universities, and nonprofits sued, arguing that the executive branch cannot withhold or rewrite funding Congress appropriated, and courts issued conflicting rulings while some disputes reached the Supreme Court. Supporters said the President must be able to ensure that federal money serves current policy and to stop wasteful spending, while critics said the actions violated the Impoundment Control Act and the separation of powers. The broader debate over block grants versus categorical grants also continues.
Categorical grants fund specific purposes under detailed rules, and most federal aid takes this form. Block grants, such as the Community Development Block Grant created in 1974, give states and localities broader flexibility within a policy area. Formula grants are divided automatically under criteria set by Congress, such as population, poverty, or road miles, which is one reason the census matters so much. Project grants are awarded competitively by agencies. Many programs require matching funds or that states maintain their own spending.
Federal spending, including grants, is published on USAspending.gov. Recipients that spend more than a threshold amount of federal money in a year must undergo a single audit under the Single Audit Act of 1984. Agency inspectors general and the Government Accountability Office investigate waste and fraud. Pandemic relief led to new oversight bodies, and improper payments remain a recurring concern in large programs such as Medicaid.
Congress creates programs in authorizing laws and funds them in appropriations bills. The Office of Management and Budget apportions the money to agencies, which issue funding notices, review applications, and sign grant agreements. Much of the money goes first to states, which pass it on to counties, cities, school districts, and nonprofits. Recipients register in a federal system and follow a common set of rules on costs and reporting. Congress can also direct money to specific local projects through earmarks.
Under the Spending Clause, Congress can attach conditions to grants. In South Dakota v. Dole in 1987, the Supreme Court upheld withholding a share of highway funds from states that did not raise the drinking age to 21, as long as conditions are clear, related to the program's purpose, and not coercive. In NFIB v. Sebelius in 2012, it held that threatening all of a state's Medicaid funding to force the Affordable Care Act expansion crossed that line. Unfunded mandates, which impose requirements without money, are a separate and long-running complaint of state and local officials.
See how the levels of government divide work in states vs. federal: who does what, explore the constitutional design in federalism explained, or see targeted local spending in earmarks and pork.