Supplemental Appropriations: Trends and Budgetary Impacts Since 1981







Prepared for Members and Committees of Congress



Hurricane Katrina, which struck Louisiana, Mississippi, and Alabama in 2005, caused widespread
flooding, significant property damage, and lost lives. Within two weeks, Congress passed two
supplemental appropriations measures providing a combined $62.3 billion for relief and recovery
needs. Including the supplementals for the war on terror and military operations in Iraq and
Afghanistan, total supplemental appropriations for FY2005 to FY2008 were $512.7 billion. In
response, there is growing sentiment in Congress that military operations be funded through the
regular appropriations process rather than through supplemental appropriations.
Supplemental appropriations provide additional funding to an agency during the course of a fiscal
year for programs and activities that are considered too urgent to wait until next year’s budget.
The major purposes of supplemental appropriations have changed over the past 28 years. In the
1980s, almost half of supplemental appropriations were for mandatory programs such as
unemployment compensation, and the rest were for discretionary spending. After 1990, over 90%
of supplemental appropriations have been for discretionary spending, as the major purpose has
shifted toward funding natural disaster relief and, more recently, military operations.
The amount of new budget authority contained in supplemental appropriations bills fell after
1981 from over 3% of total budget authority to only about 0.1% by 1988. Except for a sharp spike
in 1991 to fund the first Gulf war, supplemental appropriations remained at less than 1% of total
budget authority throughout most of the 1990s. Supplemental appropriations began to rise after

1998, and by 2005 reached about 6% of budget authority.


Since FY1981, an average of 32% of the supplemental appropriations were offset by rescissions.
After FY2002, however, about 5% of the supplemental appropriations were offset through
rescissions. It has been argued, however, that the offsetting rescissions were merely write-offs of
budget authority that would never be used. For example, CBO estimated that in the 1980s, nearly
half of the rescinded funds were unlikely to ever have been spent.
Supplemental appropriations net of rescissions have usually increased the budget deficit, and
federal debt held by the public is larger than it would have been had the supplemental
appropriations been fully offset. Had supplemental appropriations been fully offset since 1981,
federal debt held by the public could have been reduced by about 23% or $1,332 billion. This
could have reduced interest payments to the public by $57 billion per year. On the other hand, if
25% of the supplemental appropriations in FY2003 through FY2008 had been offset (the average
offset for previous years), federal debt held by the public would have been reduced by almost 3%
or about $170 billion. Presently, reducing federal debt held by the public by $170 billion could
save over $7 billion annually in interest payments to the public. This report may be updated if
events warrant.






Introduc tion ..................................................................................................................................... 1
Budget Rules and Supplemental Appropriations.............................................................................2
General Trend in Supplemental Appropriations..............................................................................3
Budget Controls and Rescissions....................................................................................................5
Budgetary Impacts of Supplemental Appropriations.......................................................................6
Conclusions ..................................................................................................................................... 7
Figure 1. Supplemental Appropriations as a Percentage of Budget Authority, 1981-2008.............4
Table 1. Supplemental Appropriations and Rescissions..................................................................6
Table 2. Effect of Supplemental Appropriations Net of Rescissions on Budget Deficit.................6
Author Contact Information............................................................................................................7






Hurricane Katrina, which struck Louisiana, Mississippi, and Alabama in 2005, caused widespread
flooding, significant property damage, and lost lives. Within two weeks, Congress passed two
supplemental appropriation measures providing a combined $62.3 billion for relief and recovery
needs. Including the supplementals for the war on terror and military operations in Iraq and
Afghanistan, total supplemental appropriations were $160.4 billion for FY2005, $93.4 billion for
FY2006, $120.0 billion for FY2007, and $138.7 billion for FY2008—6.3%, 4.5%, 4.2%, and 1
4.4% of the total budget authority, respectively. In response, there is growing sentiment in
Congress that military operations be funded through the regular appropriations process rather than 2
through supplemental appropriations. Supplemental appropriations often receive less scrutiny
than the budget for the upcoming fiscal year as is reflected by the fact that the time from
introduction to enactment is typically quite short. For example, for the five FY2005 supplemental
appropriations acts, the time from introduction to enactment varied from less than one day to 3
three months.
A supplemental appropriation is a device to provide additional funds for a fiscal year already
underway, and has been used since the second session of the first Congress. However, concern
has been expressed over the volume of appropriations made through supplementals. Although
supplemental appropriations are usually used to fund emergency spending, Congress has
nevertheless attempted to control supplementals. Besides efforts to limit supplemental
appropriations to “dire” emergencies, Congress has tried to mitigate the effects of supplementals
with offsetting rescissions. Since 2003, however, about 5% of supplemental appropriations have
been offset.
Many in Congress have expressed concern about the impact of supplemental appropriations on
the federal budget deficit and federal debt. In 2001, the federal budget ran a surplus equal to 1.3%
of gross domestic product (GDP). Three years later, the federal budget was in deficit as outlays
increased somewhat and receipts fell. The budget deficit was equal to 3.6% of GDP in 2004 and
the 2008 budget deficit was about 3.2% of GDP ($455 billion). Furthermore, federal debt held by 4
the public as a percentage of GDP increased from 33% to about 37% between 2001 and 2008.
This report examines supplemental appropriations since 1981. The trends in, and the budget rules
and laws applicable to, supplemental appropriations are briefly reviewed. In addition, the impact
of supplemental appropriations on budget deficits and federal debt is estimated. The report does
not focus on the reasons why supplemental appropriations have followed a particular trend

1 See Congressional Budget Office, CBO data on Supplemental Budget Authority for the 2000s, at http://www.cbo.gov/
ftpdocs/66xx/doc6630/SuppApprop.pdf, visited Dec. 29, 2008.
2 See CRS Report RS22455, Military Operations: Precedents for Funding Contingency Operations in Regular or in
Supplemental Appropriations Bills, by Stephen.
3 The Emergency Supplemental Appropriations Act to Meet Immediate Needs Arising from the Consequences of
Hurricane Katrina, 2005 (P.L. 109-61) was introduced and enacted on Sept. 2, 2005. The Military Construction
Appropriations and Emergency Hurricane Supplemental Appropriations Act, 2005 (P.L. 108-324) was introduced on
July 15, 2004, and enacted on Oct. 13, 2004.
4 At the end of 2008, total outstanding federal debt was $10.55 trillion, of which $6.32 trillion was held by the public
and the balance was held in government accounts. Debt held by the public is the debt measure used in the report
because it is the measure that is relevant in an economic sense. It is federal debt that is sold in credit markets, and
influences the interest rate and private-sector investment decisions. See CRS Report RL31590, The Federal
Government Debt: Its Size and Economic Significance, by Brian W. Cashell.





(although some reasons are offered), but rather focuses on the budgetary impacts of supplemental
appropriations.

Supplemental appropriations provide additional funding to an agency during the course of a fiscal
year for programs and activities that are considered too urgent to wait until next year’s budget.
They often include spending for items authorized after the annual regular appropriations process.
Over the past 25 years, Congress and the President have enacted one to eight supplemental
appropriations or rescissions each year.
The major purposes of supplemental appropriations have changed over the past 25 years. In the
1980s, almost half of supplemental appropriations were for mandatory programs such as
unemployment compensation, and the rest was for discretionary spending. One large
discretionary item in supplemental appropriation during this time was civilian pay raises. The
purposes of supplemental appropriations shifted dramatically in the 1990s toward funding natural 5
disaster relief as agencies were required to absorb the full amounts of pay raises. After 1990,
over 90% of supplemental appropriations were for discretionary spending.
The President is authorized to “submit to Congress proposed deficiency and supplemental
appropriations the President decides are necessary because of laws enacted after submission of 6
the budget or that are in the public interest.” Supplemental appropriations, however, are
generally discouraged. For example, the Office of Management and Budget (OMB) directs 7
agencies to “make every effort to postpone actions that require supplemental appropriations.”
OMB further states that it “will only consider requests for supplementals and amendments when:
• Existing law requires payments within the fiscal year (e.g., pensions and
entitlements);
• An unforeseen emergency situation occurs (e.g., natural disaster requiring
expenditures for the preservation of life or property);
• New legislation enacted after the submission of the annual budget requires
additional funds within the fiscal year;
• Increased workload is uncontrollable except by statutory change; or
• Liability accrues under the law and it is in the Government’s interest to liquidate 8
the liability as soon as possible (e.g., claims on which interest is payable).
Supplemental appropriation bills often contain funding requests for several purposes with varying
levels of urgency. For example, the Emergency Supplemental Appropriations Act for Defense, the
Global War on Terror, and Tsunami Relief, 2005 (P.L. 109-13) provided $76.2 billion for
additional defense spending, $5.8 billion for additional non-defense spending and $1.5 billion in
rescissions which permanently cancel budget authority. Included in the bill were emergency

5 Congressional Budget Office, Supplemental Appropriations in the 1990s, Mar. 2001.
6 31 U.S.C. §1107.
7 Office of Management and Budget, Circular A-11 (June 2008), p. 1 of section 110.
8 Circular A-11 (June 2008), p. 1 of section 110.





supplemental appropriations for the National Oceanic and Atmospheric Administration, the
Public Health and Social Services Emergency fund, and the Office of Federal Housing Enterprise
Oversight, among others.
Supplemental and regular appropriations have been subject to a variety of budgetary rules over 9
the years. Prior to 2003, the Budget Enforcement Act of 1990 (BEA) set discretionary spending
caps and a pay-as-you-go (PAYGO) requirement for mandatory spending. The BEA was revised
and extended throughout the 1990s and the limits expired at the end of FY2002. Before 1990, the
Balanced Budget and Emergency Deficit Control Act of 1985 set a deficit target and established a 10
sequestration process to enforce the targets. In addition, the 1987 and 1989 budget summits
focused on reducing the deficit by limiting the amounts Congress could appropriate.
Spending determined to be for an emergency by both the President and Congress has been
effectively exempt from the deficit targets, budget caps, and PAYGO requirements. However, at
one point in the negotiations during the 1989 budget summit, negotiators discussed limiting
supplemental appropriations by requiring all additional discretionary spending be offset. Unable
to reach agreement on new language, the final agreement left intact the exemption for 11
supplemental appropriations in the case of emergencies from the 1987 Budget Summit. Many
times the emergency designation has proven controversial, and some lawmakers have been
concerned that the emergency spending exemption has been used mainly to evade BEA’s 12
constraints rather than respond to unanticipated needs.

Since 1981, supplemental appropriations have varied from $1.3 billion to $161.9 billion which 13
corresponds to 0.1% to over 6% of total budget authority (see the solid line in Figure 1). The
amount of new budget authority contained in supplemental appropriations bills fell after 1981
from over 3% of total budget authority to 0.1% in 1988. The early 1980s were characterized by
high inflation and then a severe recession. The double digit inflation of 1980 and 1981 led the
Federal Reserve Board to adopt a tight monetary policy to reduce inflation. This policy action
contributed to the severe 1981-1982 recession. Both the high inflation and the recession led to
greater than expected outlays as the price increases made programs more expensive to administer
and the recession increased outlays for unemployment compensation and means-tested transfers
to the unemployed. Some of the unexpected spending was funded through supplemental
appropriations. As the economy recovered after 1982, the need to meet unanticipated outlays was
removed, and supplemental appropriations fell. CBO argued that provisions in the Congressional

9 See CRS Report 98-721, Introduction to the Federal Budget Process, by Robert Keith; and CRS Report RS21035,
Emergency Spending: Statutory and Congressional Rules, by James V. Saturno.
10 Sequestrations are automatic, largely across-the-board spending reductions to bring projected budget levels in line
with statutory targets. See CRS Report RS20398, Budget Sequesters: A Brief Review, by Robert Keith.
11 William G. Dauster, “Budget Emergencies,” Journal of Legislation, vol. 18, no. 2, (1992), pp. 249-315.
12 Congressional Budget Office, Emergency Spending under the Budget Enforcement Act, Dec. 1998.
13 Budget authority provides the federal government authority to enter into obligations. Outlays or the spending of the
money occurs when obligations are liquidated. New budget authority in one year may not result in outlays in the same
year. For example, of the $2,770 billion that the administration proposed for FY2007 outlays, $2,206 billion would
result from recommended new budget authority and $564 billion would result from budget authority enacted in prior
years. See Budget of the United States Government, Fiscal Year 2006, Analytical Perspectives, Feb. 2006, chart 26-1,
p. 389.





Budget Act of 1974 also contributed to the reduction in supplemental appropriations in the late 14

1970s and early 1980s.


Figure 1. Supplemental Appropriations as a Percentage of Budget Authority, 1981-
2008
7%
6%
5%
Supplementals
4%
3%t
rcen
2%Pe
1%
0%
Supplementals
-1%Net of Rescissions
-2%
1981 1984 1987 1990 1993 1996 1999 2002 2005 2008
Fiscal Year
Source: CRS calculations based on CBO data.
The brief decline in 1988 may have been due to the 1987 budget summit between Congress and
the President where it was agreed that supplemental appropriations would not be considered
except for dire emergencies. Except for a sharp spike in 1991 to fund the first Gulf war,
supplemental appropriations remained at less than 1% of total budget authority throughout most
of the 1990s. Much of the incremental cost for the first Gulf War operations was eventually offset
over the 1990s by burden-sharing contributions from allied nations.
After 1998, supplemental appropriations began to rise as the federal budget began running
surpluses. After 2002, much of the supplemental appropriations was for funding the wars in Iraq
and Afghanistan, and the war on terrorism. By 2005, supplemental appropriations reached about
6% of budget authority. Supplemental appropriations were $139.0 billion in 2008 (about 4% of
budget authority) of which $305 million was offset through rescissions.

14 Congressional Budget Office, Supplemental Appropriations in the 1980s, Feb. 1990.






The enactment of rescissions, to some extent, reduced the budgetary effect of supplemental
appropriations. The dashed line in Figure 1 shows the supplemental appropriations net of
rescissions as a percentage of budget authority. The level of rescissions in supplemental
appropriations has varied from year to year, with particularly large rescissions in FY1981,
FY1986, and FY1995. In FY1995, enacted rescissions totaled $18.9 billion, while supplemental
appropriations amounted to $6.4 billion. Since FY1981, an average of 33% of the supplemental
appropriations were offset by rescissions. If the three years with large rescissions are omitted,
then about 19% of the supplemental appropriations have been offset, on average.
Deficit reduction has been of great concern since the early 1980s. The large deficits of the early
1980s prompted Congress to enact deficit target legislation in 1985. In 1990, the focus shifted
from budget deficits, per se, to establishing discretionary spending limits and mandatory spending
PAYGO requirements. These limits expired at the end of FY2002. Table 1 reports supplemental
appropriations and rescissions for the following four periods:
• FY1981-FY1985, the period before the enactment of the deficit targets, but
covered by provisions of the Congressional Budget Act of 1974 which required
the President’s budget submission to include allowances for emergencies;
• FY1986-FY1990, the period covered by the deficit targets under the Balanced
Budget and Emergency Deficit Control Act of 1985, and the 1987 and 1989
budget summit agreements;
• FY1991-FY2002, the period covered by BEA’s discretionary limits and PAYGO
requirements; and
• FY2003-FY2008, the period after the BEA limits expired.
For each of the four periods, Table 1 shows the total amount of supplemental appropriations and
rescissions. For the FY1981-FY1985 period, 22% (25% in present value terms) of supplemental 15
appropriations were offset through rescissions. Over the period covered by the deficit targets
(FY1986-FY1990), over 40% of the supplemental appropriations were offset. During the
FY1991-FY2002 period, about one quarter of the supplemental appropriations were offset. After
FY2002, however, about 5% of the supplemental appropriations were offset through rescissions
of which $34.8 billion occurred in FY2006 (about 92% of total rescissions since FY2003). It has
been argued that the offsetting rescissions were merely write-offs of budget authority that would
never be used. For example, CBO estimates that in the 1980s, nearly half of the rescinded funds 16
were unlikely to ever have been spent.

15 The level of supplemental appropriations and rescissions varies from year to year. The present value calculation takes
into account inflation and the time value of money using the interest rate on five-year U.S. government bonds.
16 Congressional Budget Office, Supplemental Appropriations in the 1980s, Feb. 1990.





Table 1. Supplemental Appropriations and Rescissions
(billions of dollars)
Fiscal Total Supplemental Total Percent of Supplemental Appropriation Rescinded Percent of Supplemental Appropriation Rescinded
Years Appropriations Rescissions (nominal) (present value)
1981-$103.3 $23.2 22.4% 25.5%
1985
1986-$38.6 $15.7 40.7% 43.5%
1990
1991-$206.6 $55.2 26.7% 27.0%
2002
2003-$749.2 $37.7 5.0% 4.9%
2008
Source: CRS calculations based on CBO and OMB data.

Table 2 reports the estimated percentage increase in the budget deficit as a result of not offsetting 17
the full amount of supplemental appropriations. Over the entire FY1981-FY2007 period, the
annual budget deficits were about 12% larger than would have been the case if the entire
supplemental appropriation were offset by budget reductions or revenue increases. Over the
FY1981-FY1985 period, supplemental appropriations net of rescissions increased the budget
deficit by about 8% per year. Over the FY1986-FY1990 period, the supplementals increased the
annual budget deficits by less than 4%. After the expiration of the discretionary limits and
PAYGO requirements at the end of FY2002, supplemental appropriations net of rescissions
increased the budget deficit by almost 40% per year.
Table 2. Effect of Supplemental Appropriations Net of Rescissions on Budget Deficit
Fiscal Years Estimated average annual increase in budget deficit or decrease in budget surplus
1981-1985 7.6%
1986-1990 3.5%
1991-2002 5.3%
2003-2008 36.8%
1981-2008 12.1%
Source: CRS calculations based on CBO and OMB data.

17 Supplemental appropriations may not necessarily result in outlays in the same fiscal year in which they are enacted.
Based on CBO data for the 1990s, it is estimated that about 30.5% of supplemental appropriations resulted in outlays in
the same fiscal year, 56.1% in the next fiscal year, and the remaining 13.4% in subsequent fiscal years. These
percentages are used for estimating the impact of the outlays associated with supplemental appropriations on the budget
deficit. To the extent that the rescissions just cancelled budget authority that never would have been spent, the estimates
could understate the actual impact on budget deficits.





Supplemental appropriations have been fully offset in only one year since FY1980. In FY1995,
supplemental appropriations amounted to $6.4 billion while the new Congress rescinded about
$18 billion in budget authority. Consequently, supplemental appropriations net of rescissions have
usually increased the budget deficit and federal debt held by the public is larger than it would
have been had the supplemental appropriations been fully offset. Had supplemental
appropriations been fully offset since 1981, federal debt held by the public could have been
reduced by about 23% or $1,332 billion. This could have reduced interest payments to the public
by $57 billion per year. On the other hand, if 25% of the supplemental appropriations in FY2003
through FY2008 had been offset (the average offset for previous years), federal debt held by the
public would have been reduced by almost 3% or almost $169 billion. Presently, reducing federal
debt held by the public by $169 billion could save over $7 billion annually in interest payments to
the public.

Reacting to disasters and other emergencies often requires high levels of funding. The required
funding cannot be anticipated and the length of the funding commitment is difficult to determine
in advance. In adopting budget rules and laws to control supplemental appropriations, Congress
and the President have in the past provided a “safety valve” for emergencies. Spending that is
deemed an emergency was effectively exempt from discretionary limits and PAYGO 18
requirements. However, what constitutes an emergency has not been without controversy.
Funding for most emergencies has come through supplemental appropriations. While most of the
funds from a supplemental appropriation are directed toward addressing the stated emergency,
funding for other purposes with varying levels of urgency are often included. Prior to 2003,
varying amounts of supplemental appropriations were offset by reductions in other spending or
increases in revenues. Between 1981 and 2002, about a quarter of supplemental appropriations
were offset through rescissions. However, since the expiration at the end of FY2002 of the
discretionary limits and PAYGO requirements, about 5% of supplemental appropriations have
been offset.
Even with the rescissions, supplemental appropriations have generally increased the budget
deficit and federal debt held by the public. Had all supplemental appropriations since 1981 been
offset, publicly held federal debt could have been about 23% lower at the end of FY2008.
Furthermore, if just 25% of supplemental appropriations in FY2003-FY2008 had been offset,
federal debt held by the public could have been almost 3% lower.


Thomas L. Hungerford
Specialist in Public Finance
thungerford@crs.loc.gov, 7-6422



18 See CRS Report RL31478, Federal Budget Process Reform: Analysis of Five Reform Issues, by James V. Saturno
and Bill Heniff Jr., and Congressional Budget Office, Emergency Spending under the Budget Enforcement Act, Dec.
1998 for a discussion on budgeting for emergencies and a review of reform options.