How Federal Spending Works
Appropriations, obligations, and outlays — the lifecycle of a federal dollar explained in plain language.
Last updated: February 1, 2025
The Federal Budget Process
Every year, Congress and the President go through a complex budget process that determines how the federal government spends trillions of dollars. Here's how it works, step by step.
Step 1: The President's Budget Request
Each February, the President submits a budget proposal to Congress. This document outlines spending priorities for the upcoming fiscal year (which starts October 1). It's a starting point — Congress is not required to follow it.
Step 2: Congressional Appropriations
Congress holds hearings, debates, and ultimately passes appropriations bills that authorize specific agencies to spend money. There are 12 annual appropriations bills covering different areas of government.
Step 3: Obligations
Once agencies have their funding, they "obligate" money by entering into contracts, awarding grants, or committing to other spending. An obligation is a legal commitment to pay — the government has promised to spend the money.
Step 4: Outlays
Outlays are the actual cash payments. When a contractor delivers goods and sends an invoice, or when a grant recipient draws down funds, that's an outlay. Outlays can happen weeks, months, or even years after the original obligation.
Key Terms
- --Budget Authority: The legal authority to incur obligations
- --Obligations: Binding commitments to pay (contracts signed, grants awarded)
- --Outlays: Actual cash disbursements
- --Discretionary Spending: Programs funded through annual appropriations
- --Mandatory Spending: Programs like Social Security and Medicare that are funded automatically
Why This Matters
Understanding these distinctions helps you read federal spending data correctly. When USAspending.gov shows "obligations," that means money the government has committed to spend — not necessarily money that has already been paid out.
More Articles
Contracts vs. Grants: What's the Difference?
Federal contracts and grants both move taxpayer money, but they work very differently. Here's what sets them apart.
The Largest Government Contractors
A guide to the companies that receive the most federal contract dollars and what they do.
Federal Spending by State
How federal dollars flow to each state — and why some states receive more than others.
Understanding USAspending.gov Data
A guide to reading and interpreting the federal spending data that powers this site.