The 75-Year Budget Outlook October 25, 2018

Similar documents
CBO s 2017 Long-Term Budget Outlook March 30, 2017

The 2014 CBO Long-Term Budget Outlook July 15, 2014

Updating the U.S. Budget Outlook March 2, 2018

Debt Is Rising Unsustainably

The 2016 CBO Long-Term Budget Outlook July 12, 2016

Analysis of CBO s Updated Budget and Economic Outlook August 25, 2015

Analysis of CBO s April 2018 Budget and Economic Outlook April 9, 2018

Analysis of CBO s January 2019 Budget and Economic Outlook January 28, 2019

CBO s January 2017 Budget and Economic Outlook January 24, 2017 MITCH DANIELS LEON PANETTA TIM PENNY

Analysis of the 2018 Medicare Trustees Report June 7, 2018

The Cost of Rising Interest Rates December 14, 2016

CBO s Analysis of the President s FY 2017 Budget March 30, 2016

CBO s January 2015 Budget and Economic Outlook January 26, 2015

CBO s Analysis of the President s FY 2016 Budget March 12, 2015

Update: CBO s January 2016 Full Budget and Economic Outlook January 25, 2016

Analysis of CBO s 2014 Budget and Economic Outlook February 4, 2014

Understanding the Bipartisan Budget Act December 11, 2013

CBO s Analysis of the President s FY 2013 Budget March 19, 2012

Social Security and the Budget March 24, 2011

President Trump s FY 2018 Skinny Budget March 16, 2017

Our Debt Problems Are Still Far from Solved May 15, 2013

Comparisons of CBO and OMB Baseline Projections August 28, 2009

Analysis of the President s FY 2013 Budget February 16, 2012

Adding Up Donald Trump s Campaign Proposals So Far May 9, 2016

Analysis of the President s FY 2012 Budget February 16, 2011

Tax Reform: Reducing Tax Rates and the Deficit October 15, 2012

Analyzing the President s New Budget Framework April 21, 2011

Our Debt Problems Are Far from Solved Updated: February 11, 2013

Sequester Offset Solutions Plan September 16, 2015

President Trump s Full FY 2018 Budget May 24, 2017

Testimony of Maya MacGuineas Committee for a Responsible Federal Budget Hearing before the House Financial Services Committee:

Health Care, Revenue, and Other Mandatory Options May 7, 2015

U.S. Budget Watch

The PREP Plan: Paying for Reform and Extension Policies

Testimony of The Honorable Leon E. Panetta Hearing before the Joint Select Committee on Budget and Appropriations Process Reform:

The Budget Act at 40: Time for a Tune Up?

Hearing before the Senate Budget Committee Benefits of a Balanced Budget Wednesday, March 11, 2015

Understanding the S&P Downgrade

Options to Address SSDI s Financial Shortfall Marc Goldwein & Ed Lorenzen

Let s Get Specific: Tax Expenditures October 2010

What Needs to Come Out of the Debt Ceiling Negotiations June 21, 2011

Between a Mountain of Debt and a Fiscal Cliff

10 Themes Emerging from the New Debt Reduction Plans November 23, 2010

COMMITTEE FOR A RESPONSIBLE FEDERAL BUDGET

The 12 Principles of Fiscal Responsibility for the 2012 Campaign

What The New CBO Report Shows Budget And Economic Outlook Has Not Improved by James Horney and Richard Kogan

The Campaign to Fix the Debt

Notes Unless otherwise indicated, the years referred to in describing budget numbers are fiscal years, which run from October 1 to September 30 and ar

CBPP S UPDATED LONG-TERM FISCAL DEFICIT AND DEBT PROJECTIONS

Guide to Social Security: The 2008 Presidential Election

COMMITTEE FOR A RESPONSIBLE FEDERAL BUDGET

Does the Budget Surplus Justify Large-Scale Tax Cuts?: Updates and Extensions

Committee for a Responsible Federal Budget. Twelve Principles for Fiscal Responsibility

CHOICES FOR DEFICIT REDUCTION NOVEMBER debt could itself precipitate a fiscal crisis by undermining investors confidence in the government s ab

AUGUST 2012 An Update to the Budget and Economic Outlook: Fiscal Years 2012 to 2022 Provided as a convenience, this screen-friendly version is identic

Tempting Fate: The Federal Budget Outlook

The Congressional Budget Office s 2012 Long-Term Budget Outlook: An Analysis

The Federal Budget Outlook, Chapter 11

WHAT YOU SHOULD KNOW ABOUT THE BUDGET OUTLOOK. William Gale Urban-Brookings Tax Policy Center February 8, 2013 ABSTRACT

GAO. The Federal Government s Long-Term Fiscal Outlook. January 2010 Update. United States Government Accountability Office

VIEWPOINTS. tax notes. The Federal Budget Outlook: No News Is Bad News. By Alan J. Auerbach and William G. Gale

(Still) Tempting Fate

Bush Still on Track to Borrow $10 Trillion by 2014 According to Latest Official Estimates

tbo The Budget Outlook Is Even Worse than Reported BY: DEMIAN BRADY A publication of the National Taxpayers Union Foundation FEBRUARY 8, 2019

Analysis of CBO s Budget Outlook: Fiscal Years

Promises, Promises: A Fiscal Voter Guide to the 2008 Election

The Fiscal Outlook at the Beginning of the Trump Administration. Alan J. Auerbach and William G. Gale. January 30, 2017

WHAT THE NEW TRUSTEES REPORT SHOWS ABOUT SOCIAL SECURITY By Jason Furman and Robert Greenstein

Facing the Music: The Fiscal Outlook at the End of the Bush Administration

In fiscal year 2016, for the first time since 2009, the

Creating a Fiscal Turnaround in the United States Maya MacGuineas New America Foundation

unusually small at the end of 2017 and the beginning of 2018 as a result of debt-ceiling constraints.

CONGRESS HAS CUT DISCRETIONARY FUNDING BY $1.5 TRILLION OVER TEN YEARS First Stage of Deficit Reduction Is In Law

Notes Numbers in the text and tables may not add up to totals because of rounding. Unless otherwise indicated, years referred to in describing the bud

Governing through Leadership: Steps to Secure Our Fiscal Future

CBO Report Echoes Trustees on Medicare, Social Security

tax notes Volume 150, Number 11 March 14, 2016

WHAT THE 2007 TRUSTEES REPORT SHOWS ABOUT SOCIAL SECURITY By Chad Stone and Robert Greenstein

The Fiscal Outlook in a Period of Policy Uncertainty

The Budget Outlook. Auerbach, Gale, Orszag. no. June The Ten-Year Budget Outlook

90% 86% Alternative Fiscal Scenario 80% 78% 70% Current Law 60% 50% 40% 30% CRFB.org. Source: CBO

OBSERVATION. TD Economics U.S. DEFICITS & DEBT: PAST, PRESENT & FUTURE

CONGRESS OF THE UNITED STATES CONGRESSIONAL BUDGET OFFICE CBO. The Budget and Economic Outlook: Fiscal Years 2012 to 2022

TODAY S UNSUSTAINABLE BUDGET POLICY: A RECOUNT

THE LONG-TERM BUDGET OUTLOOK IN THE UNITED STATES AND THE ROLE OF HEALTH CARE ENTITLEMENTS

Testimony The 2014 Long-Term Budget Outlook Douglas W. Elmendorf Director Before the Committee on the Budget U.S. House of Representatives July 16, 20

Defining the problem: the difference between current deficit and long-term deficits

THE FEDERAL BUDGET OUTLOOK: EVEN CRAZIER AFTER ALL THESE YEARS

Notes The Congressional udget Office s extended baseline shows the budget s long-term path under most of the same assumptions that the agency uses, in

FACT SHEET CBO BUDGET OUTLOOK FY

Ryan Plan Gets 69 Percent of Its Budget Cuts From Programs for People With Low or Moderate Incomes By Richard Kogan and Joel Friedman

Selected Charts on the Long-Term Fiscal Challenges of the United States

Federal Employees Retirement System: Budget and Trust Fund Issues

Statement of Chris Edwards, Director of Fiscal Policy, Cato Institute. before the Senate Democratic Policy Committee

THE CHANGING BUDGET OUTLOOK: CAUSES AND IMPLICATIONS

Forgotten but Not Gone: The Long-Term Fiscal Imbalance

CONGRESS OF THE UNITED STATES CONGRESSIONAL BUDGET OFFICE CBO. The Budget and Economic Outlook: Fiscal Years 2013 to 2023

Analysis of Congressional Budget Office s August 2012 Updateof the Budget and Economic Outlook

US National Debt Spiraling Out of Control, New Record

The Budget and Economic Outlook: 2018 to 2028

Transcription:

CHAIRMEN The 75-Year Budget Outlook October 25, 2018 MITCH DANIELS LEON PANETTA TIM PENNY PRESIDENT MAYA MACGUINEAS DIRECTORS BARRY ANDERSON ERSKINE BOWLES CHARLES BOWSHER The federal budget is on an unsustainable long-term trajectory. With federal debt already high and rising, the country s fiscal outlook in the medium and long terms are both extremely troubling. This paper shows that the country s very long-term outlook is frightening and almost certainly unsustainable. Within a decade or so, official estimators project debt will exceed the size of the economy for only the second time in history. In 75 years, we project federal debt will exceed 3.5 times the size of the economy under current law and 6 times the size of the economy assuming policymakers continue current policies. KENT CONRAD DAN CRIPPEN VIC FAZIO WILLIS GRADISON WILLIAM HOAGLAND JIM JONES LOU KERR JIM KOLBE DAVE MCCURDY JAMES MCINTYRE, JR. DAVID MINGE JUNE O NEILL PAUL O NEILL MARNE OBERNAUER, JR. BOB PACKWOOD RUDOLPH PENNER ROBERT REISCHAUER ALICE RIVLIN The Congressional Budget Office (CBO) discontinued 75-year projections in 2016 in favor of 30-year projections, which are less uncertain and still show an outlook that is quite troubling. However, the Committee for a Responsible Federal Budget s longterm model which was built based on CBO s projections can still extrapolate the full 75 years. Though 75-year projections are highly uncertain, they show the longerterm direction the nation s finances are headed. Our model shows that: Under current law, debt will double from 78 percent of GDP today to 160 percent by 2050 and reach 360 percent of GDP by 2093. Under CBO s Alternative Fiscal Scenario which assumes the continuation of current policies debt would reach 225 percent of the economy by 2050 and over 600 percent of GDP by 2093. CHARLES ROBB ALAN K. SIMPSON JOHN SPRATT CHARLIE STENHOLM GENE STEUERLE DAVID STOCKMAN JOHN TANNER TOM TAUKE PAUL VOLCKER CAROL COX WAIT JOSEPH WRIGHT JR. Budget deficits under these scenarios would rise from about 4 percent of GDP this year to between 20 and 35 percent of GDP by 2093. Securing the solvency of various trust funds would go a long way toward fixing the debt. Under our TRUSTGO Scenario which assumes revenue and/or benefit changes sufficient to achieve solvency in Social Security, Medicare Hospital Insurance, and the Highway Trust Fund debt would stabilize at about 100 percent of GDP. Our projections show debt is on an unsustainable long-term path. While today s high levels of debt already threaten to slow economic growth, there is literally no precedent for deficits and debt at the levels projected over the next 75 years. If policymakers don t act to avoid such high levels of debt, a financial or inflation crisis would likely force action and severely damage the global economy in the process.

2 The 75-Year Current Law Outlook is Unsustainable Under current law, CBO projects debt will roughly double as a share of GDP over the next 30 years. Our model extends CBO s projections (see Appendix II for methodology) and finds debt will double again by 2083 and continue to grow rapidly thereafter. Specifically, we find that under current law debt will rise from 78 percent of GDP in 2018 to 160 percent by 2050 and over 240 percent by 2070. Debt would total 360 percent of the economy in 75 years. Fig. 1: Debt in the Three Long-Term Scenarios (Percent of GDP) 600% 602% 500% Alternative Fiscal Scenario 400% 300% Current Law 358% 200% 100% TRUSTGO Scenario 102% 0% 2003 2013 2023 2033 2043 2053 2063 2073 2083 2093 Note: Dashed lines denote CRFB estimates. Annual borrowing under this scenario would reach astronomical levels. In 2018, federal budget deficits totaled about 4 percent of GDP. We project current law deficits will rise to 10 percent of GDP by 2050, 14 percent by 2070, and 20 percent by 2093. These rising deficits are driven by the rapid and continuous growth of health and retirement programs, the failure of tax revenue to keep pace, and rising interest payments that will result from continued borrowing. According to CBO, Social Security costs will rise from 4.9 percent of GDP in 2018 to 6.3 percent by 2093. We project that federal health care spending will grow from 5.2 percent of GDP to 14.3 percent over the same timeframe. In addition, due to continued excessive borrowing, interest on the debt will explode, rising from 1.6 percent of GDP in 2018 to 14.9 percent by 2093.

3 As a result of this growth, total spending under current law would grow from 20.6 percent of GDP today to 30 percent by 2050, 35 percent by 2070, and over 42 percent by 2093. In other words, total spending will double as a share of the economy over the next 75 years. Revenue will also rise both due to the scheduled expiration of various tax cuts and continued revenue growth due to real bracket creep and other factors but not enough to keep pace with spending. We project revenue will increase from 16.6 percent of GDP in 2018 to a near-record level of 20 percent of GDP by 2050 and 23.1 percent by 2093. According to CBO, almost all of revenue growth over the next 30 years comes from the income tax, and we expect this to be true over the longer term as well. Fig. 2: Parameters Under CRFB s 75-Year Current Law Baseline (Percent of GDP) 2018 2050 2070 2093 Health Care 5.2% 9.5% 11.7% 14.3% Social Security 4.9% 6.3% 6.3% 6.3% Other Mandatory 2.6% 2.1% 1.8% 1.6% Discretionary 6.4% 5.5% 5.5% 5.5% Primary Outlays 19.0% 23.5% 25.3% 27.7% Interest 1.6% 6.6% 10.1% 14.9% Total Outlays 20.6% 30.1% 35.4% 42.6% 2050 2070 Revenue 16.6% 20.0% 21.4% 23.1% Deficit -4.0% -10.1% -14.1% -19.5% Debt 78% 160% 243% 358% The massive increase in spending, deficits, and debt under current law is clearly unsustainable. If anything, our model likely understates the severity of rising debt since it does not incorporate economic feedback from rising debt beyond 2048. A sizable course correction is needed to put the budget on a sustainable path. Stabilizing the debt at current levels over the next 75 years would require closing a fiscal gap of about 2.7 percent of GDP. Reducing debt to the historic average of 41 percent of GDP over 75 years would require closing a 3 percent of GDP gap. In other words, fixing the debt would require the equivalent of $6.8 trillion to $7.6 trillion of spending cuts and/or tax increases over the next decade, the equivalent of cutting primary spending by 14 to 15 percent or increasing revenue by 15 to 17 percent.

4 The 75-Year Current Policy Outlook is Frightening While the current law fiscal outlook is unsustainable, it is in many ways an optimistic view of fiscal policy. Current law assumes that the recent $150 billion per year spending hike expires and sequester-level discretionary spending levels return starting next fiscal year. It also assumes that many of the tax cuts enacted at the end of last year expire by 2026 and that a variety of other tax provisions expire in the coming years. CBO s Alternative Fiscal Scenario (AFS) instead assumes recent discretionary spending increases continue, most expiring provisions in the 2017 tax law are extended, various taxes from the Affordable Care Act continue to be delayed, other expiring tax provisions are extended, and emergency spending is reduced from this year s elevated levels. CBO estimates that these adjustments which would cost $2.6 trillion over ten years in total would lead debt to exceed its all-time record in just over a decade. We estimate that under the AFS, debt would rise from 78 percent of GDP in 2018 to almost 225 percent by 2050, nearly 380 percent by 2070, and over 600 percent in 75 years. Deficits under this scenario would rise from 4 percent of GDP in 2018 to 7.1 percent in 2028, 16 percent in 2050, 23 percent in 2070, and 34.5 percent by 2093. The 2093 deficit would be the largest in history, even surpassing the huge deficits run to finance World War II. Fig. 3: Spending and Revenue in the Alternative Fiscal Scenario (Percent of GDP) 60% 50% Alternative Fiscal Scenario 34.5% 40% 30% Spending Current Law 19.5% 20% Revenue 10% 2003 2013 2023 2033 2043 2053 2063 2073 2083 2093 Revenue under the AFS would still rise as a share of the economy but more slowly than under current law. Specifically, we project it would grow from 16.6 percent of GDP in 2018 to 18.6 percent by 2050, 19.7 percent by 2070, and 21.2 percent by 2093 (compared to 23.1 percent in 2093 under current law).

5 Spending, meanwhile, would grow much more rapidly. Whereas CBO s current law scenario projects discretionary spending will fall from 6.4 percent of GDP this year to 5.5 percent by 2028 and thereafter, under the AFS, it would only fall to 6 percent of GDP. As a result, primary spending would be half a percent of GDP higher over the long term than under current law. Much more troubling is the growth in interest payments, driven by higher levels of debt. Under the AFS, we project interest would grow from 1.6 percent of GDP today to an astronomical 27.5 percent in 2093 (compared to 15 percent under current law). By that year, the government would spend almost as much on interest as it spends on the rest of the federal budget. In total, under the AFS, we project spending would explode from less than 21 percent of GDP in 2018 to 34 percent by 2050, 43 percent by 2070, and almost 56 percent by 2093. Fig. 4: Parameters Under CRFB s 75-Year Alternative Scenario (Percent of GDP) 2018 2050 2070 2093 Health Care 5.2% 9.5% 11.7% 14.3% Social Security 4.9% 6.3% 6.3% 6.3% Other Mandatory 2.6% 2.2% 1.9% 1.7% Discretionary 6.4% 6.0% 6.0% 6.0% Primary Outlays 19.0% 24.0% 25.9% 28.2% Interest 1.6% 10.1% 17.1% 27.5% Total Outlays 20.6% 34.1% 43.0% 55.7% Revenue 16.6% 18.6% 19.7% 21.2% Deficit -4.0% -15.5% -23.3% -34.5% Debt 78% 224% 377% 602% Note that even this scenario assumes that revenue would grow over time to eventually reach a record high as a share of GDP, and other mandatory spending would fall to its lowest level since at least 1965. If instead both categories remained constant as a percent of GDP after 30 years, debt would approach 700 percent of GDP by 2093. The changes needed to stabilize or reduce the debt would be much larger if lawmakers continued current policy. Stabilizing the debt at current levels over the next 75 years would require deficit reduction of about 5.1 percent of GDP, while reducing debt to the historic average of 41 percent over 75 years would require closing a 5.4 percent of GDP gap. This would be the equivalent of $12.8 trillion to $13.7 trillion of spending cuts and/or tax increases over the next decade, or the equivalent of cutting primary spending by 26 to 28 percent or increasing revenue by 29 to 31 percent.

6 Securing Trust Funds Could Help to Fix the Debt Avoiding economically disastrous growth in the national debt will require an aggressive combination of reduced spending and increased revenue over the long term. Significant progress can be made by offsetting all new spending or tax cuts (including extensions of current policy) and by assuring solvency of all major trust funds. Under current law, CBO projects the Highway Trust Fund will be depleted by 2021, the Social Security Disability Insurance Trust Fund will run dry by 2025, the Medicare Hospital Insurance Trust Fund will be exhausted by 2026, and the Social Security Old-Age and Survivors Insurance Trust Fund will be insolvent by 2032. Absent a plan to assure solvency of these trust funds, CBO s (and our) projections assume spending continues as if no trust fund constraint existed. Our TRUSTGO scenario assumes that spending and revenue are brought in line for these four major trust funds after the projected insolvency dates. This reflects an interpretation of current law, since programs are not legally able to spend beyond trust fund reserves without new legislation. However, this scenario also shows how lawmakers could improve debt projections by making trust funds solvent through a thoughtful mix of targeted benefit and revenue changes. Under the TRUSTGO scenario, deficits would average about 4 percent of GDP throughout the 75- year period, including in 2093. This is in stark contrast to current law, where deficits would reach 19.5 percent of GDP, and the AFS, where they would reach 34.5 percent of GDP. Fig. 5: Deficits in the Three Long-Term Scenarios (Percent of GDP) 35% 34.5% 30% 25% TRUSTGO Current Law 23.3% 20% AFS 19.5% 15% 15.5% 14.1% 10% 10.1% 5% 4.0% 4.0% 4.0% 4.2% 4.1% 3.9% 0% 2018 2050 2070 2093 These deficits would allow debt to stabilize, albeit at near-record high levels. Specifically, we project debt would rise from 78 percent of GDP in 2018 to 94 percent by 2028, but then it would rise only slightly further to 98 percent of GDP by 2050 and 102 percent of GDP in 2070 and 2093.

7 Fig. 6: Parameters Under CRFB s 75-Year TRUSTGO Scenario (Percent of GDP) 2018 2050 2070 2093 Health Care 5.2% 8.0%- 9.5% 9.5% - 11.7% 11.2% - 14.3% Social Security 4.9% 4.5% - 6.3% 4.4% - 6.3% 4.4% - 6.3% Other Mandatory 2.6% 2.1% 1.8% 1.6% Discretionary 6.4% 5.4% - 5.5% 5.4% - 5.5% 5.4% - 5.5% Primary Outlays 19.0% 20.0% - 23.5% 21.1% - 25.3% 22.7% - 27.7% Interest 1.6% 4.1% 4.3% 4.3% Total Outlays 20.6% 24.2% - 27.6% 25.4% - 29.6% 27.0% - 32.0% 2050 2070 Revenue 16.6% 20.0% - 23.4% 21.4% - 25.6% 23.1% - 28.1% Deficit -4.0% -4.2% -4.1% -3.9% Debt 78% 98% 102% 102% Note: Range reflects either all spending or all revenue changes to ensure trust fund solvency. If the trust fund adjustments were made solely on the spending side, total spending would grow far more slowly than under current law. Social Security s costs would fall from 4.9 percent of GDP in 2018 to 4.4 percent in 2093 (compared to rising to 6.3 percent under current law and the AFS). Discretionary spending would fall from 6.4 percent of GDP in 2018 to 5.4 percent by 2093 (compared to 5.5 percent under current law and 6 percent under the AFS). Health and interest costs would rise, but not as rapidly as under other scenarios. Health spending would grow from 5.2 percent of GDP in 2018 to 11.2 percent by 2093, compared to 14.3 percent under current law and the AFS. Interest spending would grow from 1.6 percent of GDP in 2018 to 4.3 percent in 2093, well below the 14.9 percent under current law and 27.5 percent in the AFS. Total spending in this case would grow steadily from 20.6 percent of GDP in 2018 to 27 percent by 2093, with about three-fifths of spending growth coming from primary spending and the rest coming from interest. Total spending in 2093 under the TRUSTGO scenario would be well below the 43 percent and 56 percent of GDP projected under current law and in the AFS, respectively. If an all-revenue solution were used to make the trust funds solvent, non-interest spending would grow as projected under current law, while revenue would rise from 16.6 percent of GDP in 2018 to 28.1 percent by 2093, compared to 23.1 percent in current law and 21.1 percent in the AFS. Total spending would grow from 20.6 percent of GDP in 2018 to 32 percent by 2093, still well below the 42.6 percent of GDP projected under current law and 55.7 percent in the AFS. Making these trust funds solvent would close 2.5 percent of GDP of the fiscal gap over the next 75 years. The result would be a remaining gap of 0.2 percent of GDP, the equivalent of about $560 billion over ten years. Reducing debt to 41 percent of GDP in 75 years would require 0.6 percent of GDP of deficit reduction, or about $1.4 trillion over ten years, in addition to the changes already made to Social Security, Medicare Part A, highway spending, payroll taxes, the gas tax, or any other dedicated revenue sources.

8 Conclusion The United States will not be able to sustain its current fiscal course over the next 75 years. While CBO s 30-year budget outlook already shows a bleak picture of rapidly rising deficits and debt, both would grow to unbelievable levels over the very long term. Under current law, we project deficits will reach 20 percent of GDP by 2093 and debt would total 360 percent of GDP. If allowed to occur, such high levels of debt would mean a substantial reduction in economic growth, a large increase in interest rates, and an explosion of federal interest costs. In reality, there is virtually no historic or international precedent for such high levels of debt. If policymakers refused to act to prevent this debt accumulation, a fiscal crisis could force corrective action. Even this scenario is in many ways optimistic. The Alternative Fiscal Scenario, showing the continuation of expiring tax cuts and spending increases, has an even bleaker outlook. In this case, we estimate deficits would reach 35 percent of GDP by 2093, and the national debt would total 600 percent of GDP. Such a debt load is in many ways unimaginable. The dramatic deterioration of the fiscal outlook associated with the Alternative Fiscal Scenario makes a strong case against unpaid-for policy extensions. Recent tax cuts should be allowed to expire (in part or in full) and/or offset with new base broadening and loophole closures. Recent spending increases should be scaled back if they are continued and fully offset with spending cuts or revenue elsewhere. To put the debt on a more sustainable path, policymakers could restore solvency to the major trust funds. If the Social Security, Medicare Hospital Insurance, and the Highway Trust Funds were all made solvent, debt would stabilize at about the size of the economy. Modest additional deficit reduction could hold future debt to current levels or below and generate additional economic improvement. To be sure, offsetting policy extensions and making trust funds solvent will require significant reductions in spending and/or increases in revenue. These kinds of tough choices, though, are absolutely necessary to keep debt from rising to dangerous new heights.

9 Appendix I: Fiscal Gap Analysis One measure of the growth of debt over the long term is the fiscal gap, or the amount of sustained non-interest deficit reduction necessary to keep debt stable as a percent of GDP. CBO estimates that the 30-year fiscal gap is 1.9 percent of GDP, the equivalent of $4.8 trillion over ten years. If the target were instead the 50-year historic average for debt (41 percent of GDP), the gap would be 3 percent of GDP, or $7.6 trillion. We estimate that the 75-year fiscal gap for current law is 2.7 percent of GDP, or $6.8 trillion over ten years. Reducing debt to its historical average would require deficit reduction of 3 percent of GDP, or $7.6 trillion over ten years. The other scenarios show much different fiscal gaps. The Alternative Fiscal Scenario, not surprisingly, has a much larger fiscal gap of 5.1 percent of GDP, or $12.8 trillion over ten years. Reducing debt to the historic average would require deficit reduction of 5.4 percent of GDP, or $13.7 trillion. Since the AFS already builds in some deficit-increasing policies, some of this deficit reduction could simply involve not extending expiring tax cuts or spending increases (or offsetting them). The TRUSTGO scenario, by contrast, shows that much less deficit reduction is needed to hit each target. Stabilizing the debt over 75 years would require deficit reduction of 0.2 percent of GDP, or about $560 billion over ten years, while reducing debt to its historic average would require 0.6 percent of deficit reduction, or about $1.4 trillion. This deficit reduction would come on top of the already large changes that lawmakers would have to undertake to eliminate the trust fund shortfalls. Fig. 7: 75-Year Fiscal Gap in the Three Long-Term Scenarios (Percent of GDP) 6% 5% 5.1% 5.4% 4% 3% 2% 2.7% 3.0% 1% 0% 0.2% 0.6% Current Law AFS TRUSTGO Stabilize Debt at 78% Reduce Debt to 41%

10 Appendix II: Methodology for Creating 75-Year Outlooks In constructing the 75-year outlook, our model first incorporates the detailed ten-year budget projections in CBO s April 2018 Budget and Economic Outlook and additional data from CBO s 2018 Long-Term Budget Outlook (LTBO) for the major categories of spending and revenue for the following 20 years. Our model allows various parameters to be adjusted and generates net interest, deficit, and debt numbers based on these adjustments. Beyond 2048, our model extrapolates CBO s projections in the following ways to generate a current law baseline: Revenue: Our model assumes steady growth of revenue based on the growth trajectory between 2028 and 2048. Health Care: Our model assumes total federal health spending grows at the rates projected in CBO s 2015 Long-Term Budget Outlook, the most recent 75-year outlook CBO produced. Social Security: Our models relies on CBO s most recent 75-year projections for Social Security, converting calendar year (CY) numbers into fiscal year (FY) totals and extrapolating one additional year. Discretionary: Our model assumes discretionary spending remains fixed as a share of GDP. Other Mandatory: Our model extends CBO s assumptions of slight and sustained reductions in the size of non-health, non-social Security mandatory spending relative to GDP. Interest: Our model assumes interest rates remain constant after 2048, resulting in growing net interest costs as the size of the overall debt grows. GDP, Inflation, and Other Economic Variables: Beyond 2048, our model relies on economic assumptions from CBO s 75-year Social Security projections but converts from calendar year to fiscal year, where possible. In other cases, our model assumes relatively steady changes based on projections from the 2040s. Importantly, our estimates do not incorporate additional economic feedback resulting from changes in debt beyond 2048. Doing so would likely substantially worsen the long-term outlook, particularly in the Alternative Fiscal Scenario. Working within our model, we incorporate several adjustments for our Alternative Fiscal Scenario and TRUSTGO Scenario. For the Alternative Fiscal Scenario, we assume (as CBO does): Most parameters remain the same as under current law The individual tax cuts from the 2017 tax law that expire after 2025 are extended Certain other expiring tax provisions, most of which have been extended numerous times before, are extended permanently Health care taxes in the Affordable Care Act that have already been delayed twice are repealed permanently

11 Recent discretionary spending hikes are extended so that discretionary spending increases with inflation after 2019 (and GDP after 2028) rather than dropping substantially when the sequester returns in 2020 Emergency disaster spending is drawn down to its historic average rather than growing with inflation from a 2018 highpoint (an assumption that reduces deficits) CBO provides year-by-year projections of the AFS through 2038, as well as single-year projections in 2048. To match those 2048 numbers, we calibrated our model to assume a modest reduction in the growth rate of revenue, consistent with the likely effects of extending current tax policy. Our estimates implicitly incorporates the negative economic feedback effects of debt through 2048, but not beyond. It is likely that debt would be substantially higher as a share of GDP if these effects were incorporated. Lastly, for our TRUSTGO scenario, we assume: Most parameters remain the same as under current law Highway Trust Fund revenue and spending are brought into line beginning in 2021, and primarily grow with GDP after 2028 Social Security Disability Insurance Trust Fund spending and revenue are brought into line in 2025, and the program continues to remain in balance over 75 years based on CBO s longterm Social Security projections (converted from calendar year to fiscal year) Medicare Part A (Hospital Insurance) revenue and spending are brought in line beginning in 2026. Our estimates rely on CBO s Medicare Part A projections through 2028 and their Hospital Insurance payroll tax estimates through 2093 but assume Part A spending grows at the same rate as total Medicare spending between 2028 and 2048 and at the same rate as total health spending from 2048 through 2093. Social Security Old Age and Survivors Insurance Trust Fund spending and revenue are brought into line in 2032, and the program continues to remain in balance over 75 years based on CBO s long-term Social Security projections (converted from calendar year to fiscal year) Again, we do not incorporate economic feedback, which in this case should result in higher GDP and thus lower debt as a share of GDP.