Order Code RL30708
CRS Report for Congress
Received through the CRS Web
Social Security, Saving,
and the Economy
Updated February 15, 2001
Brian W. Cashell
Specialist in Quantitative Economics
Government and Finance Division
Congressional Research Service ˜ The Library of Congress

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Social Security, Saving, and the Economy
Summary
One issue that never seems far from the minds of policymakers is Social Security.
At the heart of the issue is the large shortfall of projected revenues needed to meet the
mounting costs of the system. For the moment, the amount of Social Security tax
receipts exceeds the amount of benefits being paid out. The Social Security trustees
estimate that, beginning in 2015, the amount of benefits being paid out will exceed
tax collections. In 2025, the total income of the trust fund, which includes interest on
the assets held by the fund, will fall below the total outlays of the fund. According to
the trustees’ best estimate, the trust fund will be exhausted in the year 2037.
Some have argued that because the Social Security trust fund is intended to meet
rising future costs of the program, its surplus should not be counted as contributing
to official measures of the budget surplus. With regard to current saving, however,
it makes no difference whether the surplus is credited to the trust fund or simply seen
as financing current federal government outlays (including Social Security benefits).
Off-budget surpluses contribute to national saving in exactly the same way as on-
budget surpluses do. The additional saving they represent adds to the national saving
rate and allows current investment spending to be higher than it would otherwise be.
With respect to household saving for retirement, how much is “enough” may be
a subjective matter. But, one standard might be whether or not accumulated wealth
is sufficient to avoid a decline in living standards upon retirement. A number of
studies have found, however, that Americans may not tend to save enough to avoid
such a decline in their living standard.
Social Security may affect saving in several ways. It may reduce household
saving as participants pay some of their Social Security contributions by reducing
what they otherwise would have set aside. It reduces the risk associated with
retirement planning and so may free participants to cut precautionary saving. It may,
however, encourage additional saving by making it possible to retire earlier, thus
giving participants a longer period of retirement to plan for. To the extent that Social
Security involves a transfer of income from workers to retirees, it tends to reduce
household saving by shifting resources from potentially high savers to those who save
less.
Proposed reforms have different effects on saving. Those that would move
toward a more fully funded system would be likely to increase national saving,
investment, and the size of the economy in the future. Reforms that would partially
“privatize” using individual accounts, might tend to reduce national saving, unless
contributions to those accounts were mandatory. Those that invested Social Security
funds in private sector assets would be unlikely to have any effect on national saving.
This report will be updated as economic events warrant.

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Contents
Saving and the Economy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Explaining Household Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Life cycle saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Precautionary saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Recent trends in household saving . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Social Security and Household Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Saving and Social Security Reform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Fully funded vs. pay as you go . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Defined benefit vs. defined contribution . . . . . . . . . . . . . . . . . . . . . . 10
Investing the trust fund in private securities . . . . . . . . . . . . . . . . . . . 11
List of Figures
Figure 1. Personal Saving Rate, 1959-2000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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Social Security, Saving, and the Economy
One issue of perennial concern to policymakers is Social Security. At the heart
of the issue is the large shortfall of projected revenues needed to meet the mounting
costs of the system, beginning in about 2015. Taxes on those currently in the
workforce are credited to the trust fund and benefits to retirees are debited from the
trust fund. The balance of the fund itself consists of Treasury securities.
At the moment, the amount of tax receipts exceeds the amount of benefits being
paid out, and so the balance in the trust fund is growing. The current “best estimate”
of the Social Security trustees is that beginning in 2015 the amount of benefits being
paid out will exceed tax collections. In 2025, the total income of the trust fund which
includes interest on the assets held by the fund will fall below the total outlays of the
fund. According to the trustees’ best estimate, the trust fund will be exhausted in the
year 2037.1
Because benefits are projected to exceed receipts in 2015, there is concern
among many policymakers that changes need to be made now. If steps are not taken
now, it is argued, much more drastic changes will be needed down the road.
The major function of Social Security is to provide a base upon which to secure
the income of the retired population. It does so by transferring income from the
working population to those who are no longer in the labor force because of
retirement or disability. This is also known as an intergenerational compact, by which
those currently working support the retired population with the expectation that
future workers will, in turn, provide for their retirement benefits. It also serves a
social welfare function, by paying relatively more to retirees who were low-income
earners, and survivors and dependents.
From a macroeconomic perspective, however, what matters is the effect on
national saving. In a general sense, the economy is blind to the sources of saving.
What matters is that saving, whether from the household, business, or public sector
is channeled into investments which increase the capital stock, raise productivity and
add to economic growth.
If individuals set aside substantial amounts during their working lives then the
accumulated wealth and their expected Social Security benefits may be sufficient to
provide for their retirement years. The more individuals save for their retirement, the
1The trustees publish three estimates using different assumptions about costs. They call the
intermediate projection their “best estimate.” This refers to both Old-Age and Survivors
Insurance (OASI) and Disability Insurance (DI), which collectively are referred to as OASDI.
See the 2000 OASDI trustee’s report, available on the internet at:
[http://www.ssa.gov/OACT/TR/index.html]

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higher their standard of living will be when they do retire. If individuals are not saving
enough to provide for some minimal standard of living in retirement, then increased
saving in the public sector is one way of increasing national resources out of which
to fund retirement benefits in the future. The larger the economy is, the better able
we will be, as a nation, to assure a given standard of living to all retirees.2
This paper examines the determinants of household saving and how household
saving may be affected by Social Security. The potential effects of possible changes
in Social Security on household and national saving are also discussed.
Saving and the Economy
By definition, saving is that proportion of income that is not consumed. Rather,
it is made available to sustain and increase the stock of productive capital. Combined
with labor and technological advances, it is this capital which contributes to the
production of all the goods and services that make up national output.
Reducing the share of income that is consumed and increasing the share that is
saved, will tend to raise the amount of capital available to the labor force. The more
capital there is available to the workforce, the greater the production of goods and
services will be. In other words, by saving more now we will be able to consume
more in the future.
From a macroeconomic perspective, it makes little if any difference where the
saving comes from. In terms of the collective resources of the Nation, a dollar of
saving means a dollar of investment whether it is household, business, or public sector
saving.
The measure that matters with respect to the federal government’s saving is the
unified budget. For some purposes, the budget is divided into two accounts; one is
referred to as “on-budget” and the other is “off-budget.” The so called off-budget
surplus consists almost entirely of Social Security receipts and outlays.3
Some have argued that Social Security should not be counted as contributing to
official measures of the budget surplus. Keeping Social Security off budget is a
procedural device by which Congress signals that the Social Security program should
be insulated from other operations of the budget. “Lockbox” proposals go further in
an attempt to deter the current and future Congresses from using Social Security
surpluses to justify spending increases for other federal programs or for tax cuts.4
2A larger economy will make it relatively easier to provide retirement benefits. In dealing with
the long-range Social Security funding problem, for example, a larger economy would ease
any actions needed to fully fund benefit obligations. Increasing federal government saving
now reduces outstanding federal debt and reduces outlays now devoted to financing the
existing public sector debt.
3The Postal Service is also included in the off-budget account.
4Some proponents of accounting devices that isolate Social Security from the rest of the
(continued...)

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With regard to current saving, however, it makes no difference whether those
revenues are credited to the trust fund or simply seen as financing current federal
government outlays (including Social Security benefits).5 Without the excess
revenues from Social Security taxes, the surplus would be smaller (or there would
be a budget deficit), and the federal government’s contribution to the national savings
pool would be smaller as well. Off-budget surpluses contribute to national saving in
exactly the same way as on-budget surpluses do. The additional saving they represent
adds to the national saving rate and allows current investment spending to be higher
than it would otherwise be.
Until recently, the federal government had a negative saving rate. Rather than
contributing money to the pool of funds available for investment, it ran a budget
deficit and had to compete for funds in credit markets with those seeking funds for
investing. Now with a budget surplus, the federal government takes in more in tax
revenues than it spends. The unified budget surplus represents saving.
Explaining Household Saving
Any examination of Social Security and its effects on households must begin with
an explanation of household saving behavior. What do households take into account
when deciding whether, and how much, to save?
Life cycle saving. Most economists analyze household saving behavior
using what is known as the life-cycle model of consumer behavior. The life-cycle
model begins with the basic assumption that most individuals are not myopic but
rather take their expected lifetimes into account when deciding how much out of
current income to save and how much to spend.
The life-cycle model assumes that individuals seek to avoid large fluctuations in
their standard of living over the course of their lifetimes. The model further takes as
a given that individuals’ incomes tend to follow a predictable pattern over the course
of their lifetimes. Typically, that would mean relatively low levels of income during
the initial years of work, increases in income up to retirement, and then a drop in
income during retirement.
If consumption followed the same pattern as income, it would make for
substantial changes in living standards over the course of a lifetime. Instead,
consumers are presumed to vary the rate at which they save out of income in order
to dampen the effect of changes in income on consumption. Thus, the typical pattern
would be that individuals save relatively little in the early stages of their working lives.
Then, during peak earning years, saving rates tend to be higher in order to accumulate
4(...continued)
budget claim that this would result in greater government saving. This assumes that spending
and tax policy decisions depend on what happens to the trust fund.
5Neither would it matter with respect to Social Security deficits, currently projected to begin
in 2015.

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wealth off of which to live during retirement, when saving tends to fall off
considerably.6
Precautionary saving. There is a second consideration that may motivate
household saving in addition to retirement. While there may be a typical pattern to
incomes, on average, over lifetimes, there is also a certain amount of uncertainty
associated with an individual’s income at a given time in the future. For example,
some incomes vary over the course of the business cycle, and from time to time
people may also experience episodes of either voluntary or involuntary
unemployment. Thus, in addition to serving as a buffer against lifetime income
fluctuations, some fraction of saving may also act to insure against the risks of
shorter-term fluctuations in income. This kind of saving may also help to insure
against whatever risk might be associated with one’s pension plan. It is generally
referred to as precautionary saving.
While this may not account for all the possible incentives households have to
save it is enough of a framework to make some general observations about household
saving behavior. For example, a temporary decline in incomes will not necessarily
have an effect on consumer spending, or on an individual’s long-term saving rate,
since households have already set funds aside for just such a rainy day. But, any
change in prospects that are likely to extend over an entire lifetime might well affect
saving behavior.
Recent trends in household saving. Social Security was created to help
secure the economic condition of the retired population by forcing them to save more
now in exchange for expected future benefits. Concern remains, however, that many
are still not setting aside enough on their own in order to provide adequately for
retirement.7
Since at least the early1990s, there has been considerable concern on the part of
public policymakers that Americans are not saving enough. It has often been noted
that Americans save less than they used to, and that we save less than most other
industrialized nations. Those concerns were part of the motivation for the policies
that contributed to the elimination of the federal budget deficit.8
6 People with higher incomes tend to save more than those with lower incomes; not necessarily
just because their incomes are higher, but also because they are more likely to be in their peak
earning years.
7Social Security is not the only source of retirement income. In fact, in the national income
and product accounts published by the Department of Commerce, contributions to Social
Security are not counted as part of household saving.
8Such as the omnibus Budget Reconciliation Act of 1993, which included both tax increases
and spending cuts. There has also been a reduction in defense spending relative to GDP. See:
Alesina, Alberto. The Political Economy of the Budget Surplus in the United States. Journal
of Economic Perspectives, volume 14, number 3, Summer 2000. pp. 3-19.

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Personal saving, as measured in the standard economic accounts, has been less
than robust in the 1990s.9 Figure 1 shows personal saving as a percentage of aftertax
personal income since 1959. The personal saving rate has fallen steadily from well
over 10% in the early 1980s to less than zero in 2000.
Figure 1. Personal Saving Rate, 1959-2000
14
12
10
8
6
4
percent of aftertax income
2
0
-2
1959
1964
1969
1974
1980
1985
1990
1995
Source: Department of Commerce, Bureau of Economic Analysis.
However, this measure of saving may give a distorted picture. One of the most
marked characteristics of the economy during much of the 1990s, was the dramatic
rise in equity prices. But, capital gains are not included in the measure of saving
shown in figure 1. A measure of saving based on changes in household net worth
would tell a different story. In fact, much of the decline in measured savings may be
due to the large increase in equity prices. Between 1990 and 1999, total household
net worth more than doubled, while the ratio of household net worth to aftertax
income rose from 480% to 616%.10
9For a more comprehensive examination of the saving issue, see: U.S. Library of Congress,
Congressional Research Service. Saving in the United States: Why Is It Important and How
Has It Changed? CRS Report no. 98-580 E, by Brian W. Cashell and Gail Makinen.
10Figures are from the Board of Governors of the Federal Reserve System. See also: U.S.
Library of Congress, Congressional Research Service. The Collapse of Household Saving:
Why Has it Happened and What Are its Implications? CRS Report RS20224, by Brian W.
Cashell and Gail Makinen.

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The extent to which the apparent decline in saving is of concern may depend on
the durability of the increase in equity prices. If, as some economists have argued, the
stock market is overvalued and these gains in equity prices are temporary, households
may find that they have not set aside enough to satisfy their retirement plans.
With respect to household saving, how much is “enough” may be a subjective
matter. One standard might be whether or not accumulated wealth is sufficient to
avoid a decline in living standards upon retirement. The life cycle model discussed
above assumes that individuals seek to avoid substantial ups and downs in
consumption over the course of a lifetime. One might assume, then, that the goal of
retirement saving is to avoid a significant drop in living standards after retirement.
A number of studies have found, however, that Americans may not save enough
to avoid such a decline in their living standard. One study, by Hamermesh, of
consumption patterns over time found that accumulated wealth, both private and
through Social Security, was not sufficient to sustain consumption in early retirement.
This study found that, typically, households gradually reduced their consumption
spending within several years of having retired.11
A more recent study, by Bernheim and Scholz, also found that Americans were
not saving enough to prepare for retirement.12 In particular, they found a distinct
difference in saving behavior between those with a college education and the rest of
the population. In general, those households with a college education were found to
have saved enough to avoid a substantial cutback in consumption on retiring while
those with less than a college education had not.13
In a separate study of household saving behavior, Bernheim concluded that the
typical baby-boom household was saving at about one-third the rate at which they
would need to save in order to continue to maintain their current standard of living
into retirement.14
11Hamermesh, Daniel S. Consumption During Retirement: The Missing Link in the Life
Cycle. The Review of Economics and Statistics, volume LXVI, number 1, February 1984.
pp. 1-7.
12Bernheim, B. Douglas and John Karl Scholz. Do Americans Save Too Little? Federal
Reserve Bank of Philadelphia Business Review, September-October 1993. pp. 3-20.
13Income and education tend to be correlated, as are saving and income. Nonetheless,
Bernheim and Scholz suggest that one reason some save less than others is that they may not
be fully aware of the importance of saving, and that education might be effective in
encouraging them to save more.
14American Council for Capital Formation, Center for Policy Research. Special Report. Do
Households Appreciate Their Financial Vulnerabilities? An Analysis of Actions, Perceptions,
and Public Policy. August 1994. 4 pp.

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Social Security and Household Saving
Social Security was intended to provide a base upon which to secure the income
of the retired population. As such, it might have been expected to increase the
national rate of saving by adding to what households were already setting aside.
However, there is an important question as to whether or not Social Security is
a close substitute for personal saving. If it is, Social Security may lead individuals to
save less than they would have in its absence.
Consider the stereotypical saver described by the life cycle model discussed
above. How would the introduction of a program which required workers to
contribute to a retirement fund for their own eventual benefit affect their saving
behavior? Whether and how much individual savings are affected by the introduction
of such a program would likely depend on the specific features of the program.
Suppose that the contributions yielded the same return as other forms of financial
assets households might otherwise buy with their saving. In that case, it might be
reasonable to expect that individuals would be indifferent between either saving
directly or via the contributions to their retirement fund. The introduction of such a
program might simply cause individuals to reduce other saving to offset the amount
of their contribution.
Suppose, however, that when the program is introduced, retirement benefits are
immediately available to everyone who is qualified. This would be closer to a pay-as-
you-go system. In this case, those who were very near retirement would contribute
relatively little to the program while still receiving the full stream of benefits in
retirement. Because those who immediately receive benefits would have contributed
little to the program there would be a significant transfer of income from those still
working to those in retirement.
Of these two groups, workers tend to save more than do those who are retired.
The transfer of income from relatively high savers to relatively low savers would tend
to bring down the overall household saving rate. In a strictly pay-as-you-go pension
system there would be no offsetting saving on the part of the public sector; all of the
contributions would be distributed. Thus, the introduction of a pure pay-as-you-go
Social Security system would tend to reduce the national saving rate.
Another way in which Social Security might influence saving was suggested by
economist Martin Feldstein. Feldstein argued that Social Security, or any pension for
that matter, might lead people to retire sooner than they otherwise would have.15 For
one thing, once a covered worker becomes eligible for an annuity, his pay effectively
drops by the amount of the annuity, since he is only working for the difference
between his earnings and what his annuity would be.
15Feldstein, Martin. Social Security, Induced Retirement, and Aggregate Capital
Accumulation. Journal of Political Economy, September/October 1974, volume 82, number
5. pp. 905-926.

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CRS-8
In an effort to measure the effect of Social Security on saving, Feldstein
examined the effect of Social Security wealth on personal saving using data from
1930 to 1992. Social Security wealth was defined as the discounted present value of
promised Social Security benefits. Feldstein found that, for each dollar increase in
Social Security wealth, personal savings fell by two or three cents.16 Other studies
on the effect of changes in wealth on household saving have found that for each dollar
increase in household wealth, saving out of current income falls by somewhere
between 1 and 7 cents.17
If Social Security encourages workers to retire early, then there is a longer
period of retirement to save for. But, workers anticipating an earlier retirement might
tend to save more on their own. That aspect of Social Security might then tend to
raise the personal saving rate. There are two potentially offsetting effects – Social
Security substituting for personal saving, and encouraging longer retirement. The first
effect tends to reduce personal saving, the second tends to raise it.
Social Security may also affect the precautionary motive for saving. Social
Security, as it now stands, is a defined benefit program. In other words, retirement
benefits, although they are based on career earnings, are fixed in real terms upon
retirement. After that, they do not vary and continue as long as the beneficiary
survives. In contrast, were individuals to provide entirely for their own retirement,
there would be several sources of risk. For example, there would be uncertainty
regarding how long a period of retirement would have to provided for, and there
would be some risk associated with those investments which make up individuals’
nest eggs.
Thus, Social Security may affect saving in several ways. It may reduce
household saving as participants pay some of their Social Security contributions by
reducing what they otherwise would have set aside in other investments. It reduces
the risk associated with retirement planning and so may free participants to cut
precautionary saving. It may also encourage additional saving by making it possible
to retire earlier thus providing participants a longer period of retirement to plan for.
To the extent that Social Security involves a transfer of income from workers to
retirees, it tends to reduce total saving by shifting resources from high savers to
relatively low savers.
Saving and Social Security Reform
As it now stands, Social Security is partially funded. In 2015, benefit payments
are projected to exceed tax receipts and, if that happens, will have to be funded out
of general revenues. Because of that, some policymakers urged that changes need to
be made. The argument is that whatever costs there are to assuring future benefit
payments and boosting the confidence of participants in the program will be more
16Feldstein, Martin. Social Security and Saving: New Time Series Evidence. National Tax
Journal. June 1996, volume 49, number 2. pp. 151-164.
17See: U.S. Library of Congress, Congressional Research Service. The Stock Market and the
Economic Outlook. CRS Report RL30518, by Brian W. Cashell.

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easily borne if they are spread out over a long period of time rather than put off until
some inevitable day of reckoning.18
In the long-run, from a national perspective, what matters is how much we save
now. Whether it is household saving, business saving, or a federal budget surplus,
increased saving means increased investment, a larger capital stock, and higher future
living standards. The more that is saved now, the larger the economy will be in the
future. If Social Security is changed, those changes could affect saving in one way
or another. Using the basic model of life-cycle and precautionary saving explained
above it is possible to make a few relevant observations about the potential effects of
various kinds of Social Security reform proposals on saving.19
There are two broad kinds of reform possibilities that have been most discussed.
One is a shift towards a fully-funded plan. The second is a switch from the defined
benefits that currently characterize Social Security to one that is at least partly a
defined contribution plan with variable benefits. This second kind of proposal
includes some of the suggestions that would privatize some or all of the Social
Security program. Another proposal that has been advanced would have some of the
trust fund invested in private securities such as corporate stock.
Fully funded vs. pay as you go. If Social Security were fully funded, that
would mean that each generation contributed enough to fully provide for their benefits
on retirement, and there would be no intergenerational transfers. A pure pay-as-you-
go system, on the other hand, would have no trust fund at all, and all Social Security
retirement benefits would be paid for by the current contributions of the working
population. In this case there would be a continuing transfer of income between
generations. Because Social Security is only partially funded, at some point in the
future all benefits will be transfers from the working population to retirees if no
changes are made.
Switching to a more fully funded program would necessarily involve some
combination of increased contributions and reduced benefits. However, any increase
in taxes, or cut in benefits, might be partially offset by a reduction in other forms of
household saving. A reduction in benefits could also lead households to save less as
they seek to maintain a constant level of consumption given a cut in income. For
those still working, a cut in prospective benefits might encourage additional saving.
A shift towards a fully funded system would also tend to reduce the
intergenerational redistribution of income. A pure pay-as-you-go system takes
income from workers, who tend to be savers, and gives it to retirees who tend to save
relatively little. In a fully funded system, workers would finance their own retirement
benefits. Shifting from a pay-as-you-go system to a fully funded one might reduce the
18In principle, the Social Security trust fund represents the obligation of the federal
government to pay future benefits. In practice, in an economic sense, it is current Social
Security receipts and outlays that matter.
19See: Engen, Eric M. and William G. Gale. Effects of Social Security Reform on Private and
National Saving, in: Social Security reform: links to saving, investment, and growth Federal
Reserve Bank of Boston. Conference Series No. 41. June, 1997, pp. 103-142.

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overall bias against saving which is due to the shift of income from savers to dis-
savers.
Shifting Social Security closer to a fully funded program might also increase
confidence on the part of participants that future benefits would be paid. This might
serve to diminish the precautionary incentive to save and tend to reduce household
saving.
A shift towards a more fully funded system might lead to a reduction in measured
household saving but it is unlikely that the reduction in household saving would offset
the increase in public sector saving. The net result is that such a shift would be likely
to raise the national saving rate.
Defined benefit vs. defined contribution. Other proposals for Social
Security reform involve at least a partial shift from a defined benefit plan to a defined
contribution plan. A defined benefit plan is one where the benefits are set in advance,
and while participants must contribute, their benefits do not depend on the
performance of those assets in which they are invested. Participants in a defined
contribution retirement plan contribute a set amount periodically into an account, and
their ultimate retirement benefits depend on the return on the investments held in
those accounts.
Depending on the existing level of confidence in future benefits, a shift towards
a defined contribution plan might involve an increase in the perceived, or actual, risk
faced by participants. To some extent, future benefits would depend on the
performance of those assets in which contributions were invested. An increase in risk
might lead households to save more for precautionary reasons. A switch towards a
defined contribution plan might not, however, involve a great increase in perceived
risk given the apparent skepticism among those working now as to whether or not
they will get their full Social Security benefits on retiring. If the assets in which the
defined contributions are invested yield a higher return, participants might have an
incentive to reduce other forms of saving.
Switching to a defined contribution plan, or partially privatizing Social Security,
would reduce the federal government surplus because money that had been collected
as taxes would be invested directly by individuals. The measured household saving
rate would go up as households themselves invested those funds which previously had
been paid into the Social Security trust fund. If these new contributions were
mandatory, there would be no net effect on national saving as the increase in
household saving would offset the decrease in federal government saving.
If the defined contributions were not mandatory, however, it is possible that the
household saving would not rise enough to offset the decline in the federal
government saving rate. Many would be likely to spend at least a portion of the
reduction in taxes and some, who might not ever plan to retire might spend all of it.
Unless the contributions were made mandatory, the net effect of a switch in the
direction of a defined contribution plan could reduce the national saving rate.

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There could also be some indirect effects on saving. For example, there might
be some increase in the risk associated with retirement savings with a switch to a
defined contribution plan which could encourage additional precautionary saving.
Investing the trust fund in private securities. Another reform proposal
that has been advanced is that some of the Social Security trust fund, which currently
consists exclusively of Treasury securities, be invested in private securities. Such a
change would have no effect on national saving.20
If the trust fund were to invest in private securities, corporate stock for example,
it would have to either sell some of the Treasury securities it now holds or it would
buy stocks out of current tax receipts, and the Treasury would have to find another
market for any securities it would otherwise issue to the trust fund. In any case, the
supply of Treasury securities would increase, their prices would tend to go down, and
their yields would tend to go up. At the same time the demand for corporate stock
would increase, and the yield on those stocks would tend to fall. Ultimately the public
sector would own some private assets, and the private sector would hold a larger
proportion of public sector debt. The only change would be in how the public and
private sectors invested their money. There is no evidence indicating that households
would increase, or reduce, their saving simply as a result of a shift in relative rates of
return on selected financial assets.
If trust fund assets were invested in private sector securities, which yielded a
higher rate of return, the trust fund might be made better off. But the improvement
in the trust fund would come at the expense of the rest of the federal government
budget and those private investors that would otherwise have purchased those assets.
The borrowing costs of the federal government would rise because of the increased
supply of government securities. The income from capital of other private investors
would fall because the increase in demand for private sector securities would be likely
to reduce their rate of return.21
If individual accounts were created out of trust fund assets and those accounts
were invested in private securities the situation would be similar. If Social Security
funds were held in personal accounts and invested in private securities, their yield
would likely be higher than if they were invested in government securities. But,
20Under current rules, if the trust fund purchased private sector securities, those expenditures
would be counted as outlays in the unified budget. The increase in measured outlays would
reduce the unified budget surplus. But, federal government saving would not change. The
Congressional Budget Office is considering changing they way they count purchases of private
securities in the budget to eliminate this inconsistency. Whether or not budget policy depends
in any way on particular accounting practices is an issue beyond the scope of this paper. For
a discussion, see: Congressional Budget Office. Cost Estimate H.R. 4844, Railroad
Retirement and Survivors’ Improvement Act of 2000.
21That is, unless the yields on government bonds had to rise so much, and the yields on the
private securities purchased by the trust fund had to fall so much to allow the markets to clear
that the shift resulted in no change in capital income to either the private sector or the trust
fund.

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CRS-12
someone would have to buy the assets that would otherwise have been purchased by
the trust fund. And those who did would experience a drop in income from capital.
None of this is to say that investing the trust fund in private securities is
undesirable, or would have no effect. Rather, it is to say that such a change would
be unlikely to affect the national saving rate.

Social Security will never function exactly like a collective retirement plan where
each individual sets aside a given amount in order to provide for his own retirement.
Even with a fully funded plan, there will be income transfers among participants. For
example, those who live longer than average will gain at the expense of those who die
prematurely. As long as the plan is less than fully funded, there will be an ongoing
transfer from the working population to those who are already retired.
In the case of individuals, how much they set aside during their working years
will determine how well they live in retirement. Similarly, for the Nation as a whole,
how much we save now will play a role in the size of the economy in the future. The
collective saving of households, business, and the public sector will determine how
much we invest. The more we invest, the larger a stock of capital we will have and
the more productive the labor force will be. A more productive labor force means
higher standards of living in the future.
By saving more now, the economy in the future will be larger than it otherwise
would be. The larger the economy is, and the higher incomes are will make it easier
to afford paying retirement benefits no matter how they are financed.

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