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Frequently Asked Questions about the Federal Budget

Jan 3, 2017

What are estimated federal revenues, spending, and deficits for fiscal year 2017?

The Congressional Budget Office (CBO) projects federal spending for 2017 will be $4.0 trillion, with Social Security and major healthcare programs accounting for about half of this total. In addition, CBO estimates federal revenues will be $3.4 trillion, with individual income taxes making up almost one‐half of this amount and payroll taxes contributing another one‐third. 


Major Categories of Spending

2017 Revenues by Source


What is the difference between discretionary and mandatory spending?

Congress controls discretionary spending through the annual appropriations process. This category of spending includes most defense programs, as well as important non‐defense investments including support for elementary and secondary education, veterans’ health care, homeland security, workforce training, infrastructure, scientific research, public health, clean energy, advanced manufacturing, public safety, and other programs. In contrast, Congress controls mandatory programs by establishing program rules in permanent law. Rules include such things as who is eligible for benefits, how the benefits should be calculated, and when benefits should be paid. Two of the largest mandatory programs are Social Security and Medicare, which provide retirement security for millions of Americans. Other mandatory programs include Medicaid and CHIP, subsidies for health insurance purchased through the marketplaces, unemployment compensation, income and nutrition assistance for children and families facing poverty, civilian and military retirement, certain farm programs, and veterans’ pensions and education benefits.

What are the discretionary caps?

The Budget Control Act of 2011 (BCA) set annual caps on defense and non‐defense discretionary funding through 2021 and required Congress to enact $1.2 trillion in additional deficit reduction. The BCA used the threat of much lower caps known as ‘sequester cuts’ as the impetus for Congress to establish savings in a more responsible way. Unfortunately, Congress could not agree on a package, so starting in 2013, the lower caps took effect, with defense and non‐defense discretionary spending set far below the original BCA levels. Congress has since adjusted the discretionary caps several times, and fully paid for the changes through targeted offsets. The Bipartisan Budget Act of 2015 (BBA 15) raised the caps for 2016 and 2017 by a total of $80 billion and provided additional spending outside of the caps. Unless Congress acts, the full impact of the sequester threatens 2018 and beyond.

For more information, see: Frequently Asked Questions about Sequestration; Bipartisan Budget Act of 2015; Republican Insistence on Sequester‐Level Spending for Non‐Defense Needs is Causing Harm

What is the federal debt?

There are different measures used to describe the size of the federal debt. Debt held by the public is generally considered to be the most meaningful measure when looking at the effect of the federal debt on the economy. At the end of fiscal year 2016, debt held by the public was $14.2 trillion. Another measure, gross federal debt, includes debt held by the public as well as federal debt that is held by agencies in the federal government (such as Social Security), and it stood at $19.6 trillion at the end of fiscal year 2016.

What is the debt limit?

The debt limit is a ceiling Congress places on the total amount of dollars that the Treasury is authorized to borrow. It generally has no impact on the actual level of federal debt. The actual debt is determined by spending and tax laws previously passed by Congress.

The Treasury regularly issues new debt, not just to finance new borrowing but also to raise the cash to pay off existing debt that is coming due. Failing to raise the debt limit would keep Treasury from doing that. It would not be a decision to stop borrowing; it would be a decision to refuse to pay the bills for previous spending and would place the United States into default. The consequences of this would include higher interest rates for future government borrowing and throughout the economy, and could well create a financial crisis.

In 2015, Congress suspended the debt limit until March 15, 2017, and called for it to increase to the level of debt outstanding on that date. Treasury has the ability to create some room for borrowing after that date, so a default would not take place immediately. However, that authority is limited and Congress will have to act sometime this year to avoid placing the country in default. The precise date is uncertain because the timing and amount of actual levels of federal spending and tax collection are uncertain.

What is the budget resolution?

The budget resolution is Congress’ budget plan. By itself, it does not approve any spending or make changes to revenues coming into the government. It lays out a vision for spending by major functional category as well as revenues and the resulting deficits and debt. As part of the process, the budget resolution allocates spending across Congressional Committees. The allocation to the Appropriations Committee sets the level of discretionary spending for the budget year. The resolution can also include reconciliation instructions, which can instruct Committees to make changes in mandatory programs or revenues.

What is budget reconciliation?

In its budget resolution, Congress may include reconciliation instructions directing one or more committees to change existing law affecting spending, revenues, and/or the debt limit. Instructed committees can achieve savings in any of the programs under their jurisdiction. In the Senate, the resulting reconciliation bill incorporating those proposals is considered under expedited procedures that limit debate and amendments. Like the budget resolution, a reconciliation bill cannot be filibustered in the Senate and therefore needs only a simple majority to move to a final vote. However, there are limitations on the substance of what can be included in a reconciliation bill, although a 60‐vote majority in the Senate can override any objections.

For more information, see: Budget Reconciliation: The Basics

What is driving up deficits and debt in the future?

Most close observers of the federal budget agree that over the long term if there are no changes in government policies, deficits will grow, pushing debt to unsustainable levels. Deficits are projected to grow from 2.8 percent of GDP in 2017 to 8.8 percent of GDP in 2046, as growth in spending for Social Security and major health care programs outpaces growth in revenues. The projected growth in spending for Social Security and health care programs, mostly Medicare, is driven largely by the aging population and growth in health care costs per capita. It is important to note that spending is not growing across the board. Both non‐health mandatory spending, which includes safety‐net programs such as nutrition assistance and unemployment compensation, and discretionary spending are projected to decline as percentages of GDP. On the other side of the ledger, federal revenues are projected to grow much more slowly than spending over the next three decades. Revenues have been near their long term average of 17 to 18 percent of GDP for most of the past 40 years. Revenues are projected to increase by only about 1 percent of GDP over the next 30 years, further widening the fiscal gap.