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FR8SF

WEEKLY LETTER

March 27,1987

2

+ 2

4

Excluding infants and some pre-school children,
nearly everyone accepts that two plus two
equals four. Yet inour national economic life, a
comparable convention of counting and its
implications have not been as generally
accepted. I refer to the accounting identity that a
nation's trade deficit is a direct and exact reflection of its domestic - private plus government
- spending in excess of the national output.
The failure of our society to instruct its citizenry
in this elementary economic accounting can
have serious consequences. Policymakers may
be misled into relying solely on dollar depreciation to reduce u.s. trade deficits without doing
anything about excess domestic spending. Congress and the public may be misled to clamor for
trade barriers to protect domestic industries
without perceiving the futility and potential
destructiveness of those barriers. The nation
awaits a turnaround in the trade balance, not
realizing that there can be no reduction in the
trade deficit without a decline in excess domestic spending.
Internal-external balance

The accounting relationship between the trade
balance and excess domestic spending is actually quite simple. Domestic spending consists of
household consumption, business investment,
and government expenditures. National output
is equal to domestic spending minus imports
(excluding from domestic spending those goods
and services purchased from abroad) plus
exports (adding those goods and services that
are sold to foreigners).
Since the trade balance equals exports minus
imports, simple arithmetic requires that it must
also be equal to national output minus domestic
spending. In other words, a nation's trade deficit
is an exact mirror image of its excess domestic
spending. The only way a nation can reduce its
trade deficit is by reducing its excess domestic
spending. This identity between the trade balance and the domestic spending balance is
called the "internal-external balance" identity.

For analytical purposes,it is useful to break up
the domestic spending balance into a private
spending balance and a government spending
balance. The private spending balance is equal
to private income (household after-tax income
plus business retained earnings) minus private
spending (household consumption plus business
investment) - or, more concisely, the private
spending balance is equal to the private savingsinvestment balance. The government spending
balance is simply the difference between government tax revenues and expenditures - or, in
short, the government budget balance.
Finally, since the trade balance is identically
equal to the domestic spending balance, and the
domestic spending balance consists of the private savings-investment balance and the government budget balance, the trade balance must,
therefore, at all times be identically equal to the
sum of the private savings-investment balance
and the government budget balance.
Three episodes of dollar depreciation

This last identity provides a useful tool for comparing the current developments in the trade
balance after two years of dollar depreciation
with developments during past episodes of dollar depreciation.
Since the end of World War II, there have been
two periods of steep dollar depreciation prior to
the current one: 1971 Q1-1973Q3 and
1977Q1-1978Q4, when the dollar declined 22
percent and 19 percent, respectively, against an
average of other major industrial countries' currencies. The accompanying charts show that
during both episodes the trade balance (in bars)
began to improve from the fifth or sixth quarter
after the start of dollar depreciation. During the
present episode, from 1985Q1 to 1986Q4, the
dollar depreciated by 32 percent, yet seven
quarters after the start of the decline, there was
still no trade turnaround.
The charts also show how the private savingsinvestment balance lind the government budget

FRBSF
balance behaved in each episode. During both
of the earlier episodes, the trade turnaround was
reflected in a steady improvement in the government budget balance - from a deficit to a surplus - that more than offset a significant
deterioration in the private savings-investment
balance. During the present episode, in contrast,
the huge and persistent trade deficit has been
reflected almost exactly in a huge and equally
unyielding government budget deficit, with only
a slight deterioration in the savings-investment
balance.

Lessons
Three lessons can be learned from this analysis.
First, barring a severe recession this year, which
few foresee, a substantial reduction in the government budget deficit is necessary for significant improvements in the trade balance. It is
necessary because, in the past, the private savings-investment balance has followed a countercyclical pattern: falling when business prospects
brightened and hence investment rose, and rising when business prospects dimmed and
investments declined. Savings has remained relatively stable through business fluctuations.
Hence, unless there is a severe recession in the
near future, the private savings-investment balance is unlikely to improve significantly, and
most of the internal balance counterpart to any
improvement in the trade balance would have to
come from a substantial reduction in the government budget deficit.
Second, protectionist measures will be ineffective against international competition as long as
excess domestic spending persists. Typically,
protectionist measures are intended to protect
specific industries, such as automobiles, steel,
textiles, shoes, dairy products, against imports.
Even if the measures were to succeed in keeping
jobs in the protected industries - which,
according to recent studies, they don't ~ they
would not protect jobs for the nation as a whole
unless they reduced the nation's total trade
deficit.
Squeezing a balloon from one end will only
make the balloon bulge out from another end,
unless enough air is let out. Similarly; without a
significant reduction in excess domestic spending, protectionist measures would only
redistribute import injury from politically strong

Private Spending Balance +
Government Budget Balance = Trade Balance
Percent of GNP

2.5
1.5
0.5
-0.5
-1.5

....

-2.5

,,"

-- .... - - ' "Govt Budget Balance
1971

1972

1973

1977

1978

1979

2.5
1.5
0.5
-0.5
-1.5
-2.5

2.5
1.5
0.5
-0.5

~:"'>'"""7""r;:;~;;r.""",,,,~~I'oJo-rv-:TT

-1.5
-2.5
-3.5
-4.5

--1'--

1..-

1985

--'

1986

• Data for 198604 not yet available.

industries to the politically weak. Moreover, if
foreign nations were to retaliate, the balloon
would collapse, both exports and imports would
shrink, and the whole nation would suffer the
consequences.
Third, again barring a severe recession in the
near future, dollar depreciation also will not be
effective in reducing the u.s. deficit without significant declines in the government budget deficit. This pointwas implied by the first lesson but
is worth making explicitly because most of the
popular discussions have emphasized the role of

dollar depreciation rather than a decline in
domestic spending in reducing the trade deficit.
Although the trade balance tends to improve as
a result of dollar depreciation, which makes our
exports cheaper to foreigners and imports more
expensive to U.s. residents, the tendency can be
swamped by the continued strength of domestic
(private and government) spending. The mirror
image of undiminished excess domestic spending, in spite of dollar depreciation, is a continued, large trade deficit.
This appears to have been exactly what happened in 1986. During the first three quarters of
the year, the volume of exports increased by
3 percent, but the volume of imports rose by
11 percent, both at seasonally adjusted annual
rates. The trade deficit remained the same in
relation to national output (3.5 percent) in
1986Q3 as in 1985Q4 only because the deterioration was offset by 2.4 percent growth in
national output.
The lack of improvement in the trade balance is
reflected in an equally large and persistent budget deficit (fluctuating around 3.5 percent of the
national output), with no assistance from the private savings-investment balance (fluctuating
around the zero-percent line). With no decline
in domestic excess spending, there can be no
turnaround in the trade deficit, despite the large
dollar depreciation.

Conclusions
In concluding, it is useful to point out what this
analysis does not imply. First, the analysis
involves reasoning from definitions and identities; it does not deal with causality. Specifically,

it says nothing about the adjustment mechanism
through which a reduction in the budget deficit
would bring about a decline in the trade deficit.
Within the scope of this Letter, it suffices to say
that a reduction in the budget deficit would free
resources previously absorbed in domestic
spending for use in expanding exports and
replacing imports.
Second, although it focuses on excess domestic
spending, the analysis does not deny that dollar
depreciation, foreign output growth, and foreign
trade restrictions could significantly affect a
nation's trade balance. However, these factors
will reduce the trade deficit only if they reduced
domestic excess spending. Thus far, they have
not.
In short, as a nation, we cannot rely on dollar
depreciation, stronger foreign growth, reductions
in foreign trade barriers or, worse, our own trade
protectionism, to reduce the trade deficit significantly. Barring a severe recession, which few
foresee and none wishes to see, there is no alternative but to cut the budget deficit - drastically.
What then are the prospects for such a deficit
reduction? For 1987, contrary to popular perceptions, most economic forecasters estimate a
decline in the federal budget deficit of between
$30 billion and $50 billion from its level of
about $210 billion in 1986. If income growth
remains moderate, which will keep investment
demand relatively weak, there will quite likely
be a significant reduction in excess domestic
spending, and hence the trade deficit, this year.

Hang-Sheng Cheng

MONETARY POLICY OBJECTIVES FOR 1987

Federal Reserve Chairman Paul Volcker presented a report to the Congress on the
Federal Reserve's monetary policy objectives for 1987 on February 19. The report
includes a summary of the Federal Reserve's monetary policy plans along with a review
of economic and financial developments in 1986 and the economic outlook in 1987.
Single or multiple copies of the report can be obtained upon request from the Public
Information Department, Federal Reserve Bank of San Francisco, P.O. Box 7702, San
Francisco, CA 94120; phone (415) 974-2246.

Opinions expressed in this newsletter do not necessarily reflect the views of the managementof the Federal Reserve Bank of San
Francisco, or of the Board of Governors of the Federal Reserve System.
Editorial comments may be addressed to the editor (Gregory Tong) or to the author .... Free copies of Federal Reserve publications
can be obtained from the Public Information Department, Federal Reserve Bank of San Francisco, P.O. Box 7702, San Francisco
94120. Phone (415) 974-2246.

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BANKING DATA-TWELFTH FEDERAL RESERVE DISTRICT
(Dollar amounts in millions)

Selected Assets and Liabilities
Large Commercial Banks
Loans, Leases and Investments 1 2
Loans and Leases 1 6
Commercial and Industrial
Real estate
Loans to Individuals
Leases
U.S. Treasury and Agency Securities 2
Other Secu rities 2
Total Deposits
Demand Deposits
Demand Deposits Adjusted 3
Other Transaction Balances 4
Total Non-Transaction Balances 6
Money Market Deposit
Accounts-Total
Time Deposits in Amounts of
$100,000 or more
Other Liabilities for Borrowed MoneyS

Two Week Averages
of Daily Figures

Amount
Outstanding

Change
from

3/4/87

2/25/87
- 1,293
1,242
240
130
573
0
38
11
4,827
3,860
1,560
833
134

203,558
182,767
53,450
67,647
37,097
5,454
13,723
7,069
209,840
54,302
35,969
19,839
135,699
46,457

-

2

32,414
23,827

-

170
637

Period ended

2/23/87

-

Change from 3/5/86
Dollar
-

-

-

-

642
2,283
300
1,408
3,180
200
2,747
1,106
5,966
4,462
3,099
4,194
2,690

45
7
38

-

5,934
3,059

Period ended

2/9/87
111
6
106

Includes loss reserves, unearned income, excludes interbank loans
Excludes trading account securities
Excludes U.s. government and depository institution deposits and cash items
ATS, NOW, Super NOW and savings accounts with telephone transfers
S Includes borrowing via FRB, TT&L notes, Fed Funds, RPs and other sources
6 Includes items not shown separately
7 Annualized percent change

1
2
3
4

-

-

-

-

753

Reserve Position, All Reporting Banks
Excess Reserves (+ l/Deficiency (- l
Borrowings
Net free reserves (+ l/Net borrowed( - l

-

0.3
1.2
0.5
2.1
7.8
3.5
25.0
13.5
2.9
8.9
9.4
26.8
1.9
1.6

-

15.4
11.3