The 12 annual appropriations bills are the spending laws Congress must pass each year to fund the discretionary side of the federal government. Each bill is drafted by a matching subcommittee in the House and Senate Appropriations Committees, each covers a defined slice of federal agencies and programs, and each is supposed to be signed into law before the fiscal year begins on October 1. Together they pay for national defense, federal law enforcement, scientific research, education grants, environmental regulation, foreign aid, and the day-to-day operations of nearly every federal agency.
Since the modern budget process took shape in 1977, Congress has finished all 12 bills on time only four times. The last time was fiscal year 1997. That gap between design and practice explains most of what people read about continuing resolutions, omnibus packages, and shutdowns.
What These Bills Fund, and What They Don’t
The 12 bills control discretionary spending, which is roughly one-third of total federal spending. If an agency needs money to pay salaries, sign contracts, or run programs, that money almost always flows through one of these bills.
The other two-thirds of the federal budget sits outside this process. Mandatory spending, which includes Social Security, Medicare, Medicaid, and certain veterans’ benefits, runs on autopilot under permanent law and pays out based on who qualifies. Interest on the national debt is paid automatically as well. Neither category requires annual congressional action. That is why a government shutdown does not stop Social Security checks.
What each bill grants is called budget authority: the legal permission for an agency to commit the government to spending money, defined in federal law as “the authority provided by Federal law to incur financial obligations.”1Office of the Law Revision Counsel. 2 USC 622 – Definitions Without it, an agency cannot legally spend a dollar.
The 12 Bills and What Each One Covers
Each subcommittee’s bill has a defined jurisdiction. The House and Senate versions mostly mirror each other, with minor differences.2House Committee on Appropriations – Republicans. Subcommittee Jurisdiction – 119th Congress
- Agriculture, Rural Development, Food and Drug Administration, and Related Agencies. Funds the Department of Agriculture (except the Forest Service) and the FDA.3House Committee on Appropriations – Republicans. Jurisdiction – Agriculture
- Commerce, Justice, Science, and Related Agencies. Funds the Departments of Commerce and Justice, NASA, the National Science Foundation, and agencies like the Equal Employment Opportunity Commission.4House Committee on Appropriations – Republicans. Jurisdiction – Commerce, Justice, Science
- Defense. Funds the Department of Defense, including the military branches and Space Force, along with the CIA and the Office of the Director of National Intelligence.5House Committee on Appropriations – Republicans. Jurisdiction – Defense
- Energy and Water Development, and Related Agencies. Funds the Department of Energy, the civil works of the Army Corps of Engineers, and the Bureau of Reclamation.6House Committee on Appropriations – Republicans. Jurisdiction – Energy and Water Development
- Financial Services and General Government. Funds the Treasury Department (including the IRS), the Executive Office of the President, and the Securities and Exchange Commission.7House Committee on Appropriations – Republicans. Jurisdiction – Financial Services and General Government
- Homeland Security. Funds the entire Department of Homeland Security, covering Customs and Border Protection, the Coast Guard, the Secret Service, TSA, FEMA, and Immigration and Customs Enforcement.8United States Senate Committee on Appropriations. Homeland Security – Jurisdiction
- Interior, Environment, and Related Agencies. Funds the Department of the Interior (except the Bureau of Reclamation), the Environmental Protection Agency, the Forest Service, and cultural institutions such as the Smithsonian.9House Committee on Appropriations – Republicans. Jurisdiction – Interior, Environment
- Labor, Health and Human Services, Education, and Related Agencies. Funds three cabinet departments, the National Institutes of Health, and federal student financial aid programs including Pell Grants.10United States Senate Committee on Appropriations. Labor, Health and Human Services, Education, and Related Agencies – Jurisdiction
- Legislative Branch. Funds Congress itself, including the Capitol Police, the Library of Congress, the Government Accountability Office, and the Congressional Budget Office.11House Committee on Appropriations – Republicans. Jurisdiction – Legislative Branch
- Military Construction, Veterans Affairs, and Related Agencies. Funds military base construction, family housing, and the Department of Veterans Affairs.12House Committee on Appropriations – Republicans. Jurisdiction – Military Construction, Veterans Affairs
- State, Foreign Operations, and Related Programs. Funds the State Department, USAID, the Peace Corps, international financial institutions, and foreign assistance programs.13United States Senate Committee on Appropriations. State, Foreign Operations, and Related Programs – Jurisdiction
- Transportation, Housing and Urban Development, and Related Agencies. Often called THUD. Funds the Department of Transportation and the Department of Housing and Urban Development.
Jurisdictional Quirks Worth Knowing
A few splits catch people off guard. The Forest Service is funded through the Interior bill, not Agriculture, even though it sits within the Department of Agriculture. The CIA falls under the Defense bill. The FDA is technically part of the Department of Health and Human Services but is funded through the Agriculture bill. These placements reflect decades of congressional tradition rather than any tidy organizational logic.
How the 12 Bills Are Supposed to Move
Federal law lays out a timetable that starts in early February and finishes before October 1.14Office of the Law Revision Counsel. 2 USC 631 – Timetable Nearly every step runs late in practice, but the steps themselves are worth knowing.
The President’s Budget Request
The cycle begins when the President submits a detailed budget request to Congress on the first Monday in February. Congress is free to ignore it, and often does, but the request supplies the baseline data and policy arguments that shape the debate.
The Budget Resolution and 302(b) Allocations
Congress is supposed to adopt a concurrent budget resolution by April 15 setting the overall ceiling for discretionary spending. This resolution is not a law and does not go to the President. It establishes a top-line number that the Appropriations Committees then divide among their 12 subcommittees. These individual spending limits are called 302(b) allocations, and each one caps how much a particular subcommittee can put into its bill.15U.S. Congressman Mike Simpson. What Are 302(b) Allocations? When Congress fails to pass a budget resolution, the Appropriations Committees use procedural tools called deeming resolutions to set their own numbers and keep going.
Subcommittee Markups, Committee Votes, and the Floor
The real drafting happens in the 12 subcommittees. Each holds hearings where agency heads defend their requests, then conducts a markup where members debate the bill line by line, propose amendments, and vote on a draft. That draft moves to the full Appropriations Committee for another markup and vote, then to the chamber floor.
The House traditionally originates appropriations bills first. This is a longstanding custom and chamber rule, not a constitutional requirement. The Origination Clause in Article I, Section 7 applies only to revenue bills that levy taxes, not to spending legislation.16Congress.gov. Origination Clause and Revenue Bills Once one chamber passes its version, the other typically passes a different version, and a conference committee reconciles the two into a single text that must pass both chambers again before going to the President.
How Congress Actually Finishes: Omnibus and Minibus Bills
The textbook version envisions 12 separate bills passing individually. That almost never happens. In 13 of the 15 fiscal years before FY2026, Congress failed to pass even a single appropriations bill by October 1.
Congress instead bundles unfinished bills into larger packages. An omnibus wraps all 12 into a single piece of legislation, organized as separate divisions within one law. A minibus does the same thing with a smaller group, leaving the rest for later. Either way, each original bill becomes a division of the combined legislation, preserving its subcommittee structure even as it travels through Congress as part of a bigger vehicle.
Bundling has a clear political logic. It lets congressional leaders combine popular and unpopular items into a single must-pass package, making it harder for members to vote against individual provisions. The tradeoff is less floor debate on each bill. Omnibus packages also tend to attract policy riders, non-spending provisions that hitch a ride on must-pass legislation and become law alongside the spending provisions once the package is signed.
Continuing Resolutions
When Congress cannot finish by October 1, it passes a continuing resolution. A CR is a temporary funding measure that typically extends the previous year’s spending levels for a set period, buying more time to negotiate final bills.
CRs keep the lights on but create real operational problems. Agencies generally cannot start new programs or contracts under a CR. They run at last year’s funding levels even when conditions have changed. An agency slated for a large increase in the final bill has to operate at the lower level until that bill passes. An agency facing cuts may be spending at an unsustainably high rate.
The reason CRs exist at all is the Antideficiency Act. Federal law prohibits any government officer or employee from making or authorizing an expenditure or obligation that exceeds the amount available in an appropriation, or from entering a contract before an appropriation is made.17Office of the Law Revision Counsel. 31 USC 1341 – Limitations on Expending and Obligating Amounts Without either a full appropriations bill or a CR providing legal spending authority, agencies have to stop spending.
What Happens When Nothing Passes: Shutdowns
If October 1 arrives with no CR and no completed appropriations, the result is a government shutdown. The Antideficiency Act forces agencies to cease all non-essential operations immediately.18U.S. Government Accountability Office. Antideficiency Act Only activities with a reasonable connection to the safety of human life or protection of property may continue, and even then only where suspending the function would compromise safety in a significant way.19White House. Frequently Asked Questions During a Lapse in Appropriations
Since 2019, both furloughed and excepted federal employees have been guaranteed back pay once funding resumes under the Government Employee Fair Treatment Act.20U.S. Office of Personnel Management. Government Employee Fair Treatment Act of 2019 Federal contractors are not covered by that law. The only way to end a shutdown is to enact either a CR or the full appropriations bills.
Spending Outside the 12 Bills
The 12-bill cycle covers foreseeable, recurring needs. When something unexpected happens, Congress passes supplemental appropriations outside the cycle. Natural disasters, military conflicts, and public health emergencies are the most common triggers. Emergency spending is treated as supplemental to the regular discretionary caps and sits on top of the allocation rather than competing with it, so disaster relief does not force cuts to other programs.
Congress sometimes imposes statutory limits on total discretionary spending as part of broader fiscal deals. The Fiscal Responsibility Act of 2023 set binding caps on defense and nondefense spending for fiscal year 2025. For FY2026, those statutory caps have expired, meaning there is no legally binding ceiling on how much the 12 bills can allocate.21Congressional Budget Office. Report on the Status of Discretionary Appropriation Legislation Fiscal Year 2026 When caps are in effect, exceeding them triggers sequestration, in which the Office of Management and Budget cancels a uniform percentage of spending across affected accounts to bring totals back under the limit.22Congressional Budget Office. Implementing the Statutory Limits on Discretionary Funding for Fiscal Year 2024