Federal government expenditure refers to the funds spent by a national government to finance its various activities, programs, and services. These expenditures are typically categorized into three main types:

1. Current expenditures:
- Salaries and wages for government employees
- Operating expenses (utilities, supplies, etc.)
- Transfer payments (social security, welfare, etc.)
2. Capital expenditures:
- Investments in infrastructure (roads, bridges, etc.)
- Purchases of assets (equipment, vehicles, etc.)
- Construction of public buildings and facilities
3. Transfer payments:
- Social security benefits
- Unemployment benefits
- Veterans' benefits
- Subsidies to states and local governments

Federal government expenditures are financed through various sources, including:

1. Tax revenues
2. Borrowing (issuance of government bonds)
3. Printing money (in some cases)

The federal government's expenditure plays a crucial role in shaping the country's economy, providing public goods and services, and addressing social and economic issues.