ch14 money & banking
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ch14 money & bankingTRANSCRIPT
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Chapter 14
The Money Supply Process
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Three Players in the Money Supply Process
• Central bank (Federal Reserve System)
• Banks (depository institutions; financial intermediaries)
• Depositors (individuals and institutions)
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The Fed’s Balance Sheet
• Liabilities– Currency in circulation: in the hands of the public– Reserves: bank deposits at the Fed and vault cash
• Assets– Government securities: holdings by the Fed that affect
money supply and earn interest– Discount loans: provide reserves to banks and earn the
discount rate
Federal Reserve System
Assets Liabilities
Securities Currency in circulation
Loans to Financial Institutions
Reserves
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Control of the Monetary Base
High-powered money
= +
= currency in circulation
= total reserves in the banking system
MB C R
C
R
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Open Market Purchase from a Bank
• Net result is that reserves have increased by $100• No change in currency• Monetary base has risen by $100
Banking System Federal Reserve System
Assets Liabilities Assets Liabilities
Securities $100m Securities +$100m Reserves +$100m
Reserves +$100m
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Open Market Purchase from the Nonbank Public
• Person selling bonds to the Fed deposits the Fed’s check in the bank
• Identical result as the purchase from a bank
Banking System Federal Reserve System
Assets Liabilities Assets Liabilities
Reserves +$100m Checkable deposits
+$100m Securities +$100m Reserves +$100m
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Open Market Purchase from the Nonbank Public (cont’d)
• The person selling the bonds cashes the Fed’s check• Reserves are unchanged• Currency in circulation increases by the amount of
the open market purchase• Monetary base increases by the amount of the open
market purchase
Nonbank Public Federal Reserve System
Assets Liabilities Assets Liabilities
Securities -$100m Securities +$100m Currency in circulation
+$100m
Currency +$100m
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Open Market Purchase: Summary
• The effect of an open market purchase on reserves depends on whether the seller of the bonds keeps the proceeds from the sale in currency or in deposits
• The effect of an open market purchase on the monetary base always increases the monetary base by the amount of the purchase
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Open Market Sale
• Reduces the monetary base by the amount of the sale
• Reserves remain unchanged• The effect of open market operations on the
monetary base is much more certain than the effect on reserves
Nonbank Public Federal Reserve System
Assets Liabilities Assets Liabilities
Securities +$100m Securities -$100m Currency in circulation
-$100m
Currency -$100m
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Shifts from Deposits into Currency
Nonbank Public Banking System
Assets Liabilities Assets Liabilities
Checkable deposits
-$100m Reserves -$100m Checkable deposits
-$100m
Currency +$100m
Federal Reserve System
Assets Liabilities
Currency in circulation
+$100m
Reserves -$100m
•Net effect on monetary liabilities is zero; Reserves are changed by random fluctuations; Monetary base is a more stable variable
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Loans to Financial Institutions
• Monetary liabilities of the Fed have increased by $100
• Monetary base also increases by this amount
Banking System Federal Reserve System
Assets Liabilities Assets Liabilities
Reserves +$100m Loans +$100m Loans +$100m Reserves +$100m
(borrowing from Fed) (borrowing from Fed)
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Other Factors that Affect the Monetary Base
• Float• Treasury deposits at the Federal Reserve• Interventions in the foreign exchange
market
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Overview of The Fed’s Ability to Control the Monetary Base
• Open market operations are controlled by the Fed
• The Fed cannot determine the amount of borrowing by banks from the Fed
• Split the monetary base into two components MBn= MB - BR
• The money supply is positively related to both the non-borrowed monetary base MBn and to the level of borrowed reserves, BR, from the Fed
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Multiple Deposit Creation: A Simple Model
First National Bank First National Bank
Assets Liabilities Assets Liabilities
Securities -$100m Securities -$100m Checkable deposits
+$100m
Reserves +$100m Reserves +$100m
Loans +$100m
First National Bank
Assets Liabilities
Securities -$100m
Loans +$100m
Deposit Creation: Single Bank
•Excess reserves increase; Bank loans out the excess reserves; Creates a checking account; Borrower makes purchases; The Money supply has increased
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Bank A Bank A
Assets Liabilities Assets Liabilities
Reserves +$100m
Checkable deposits
+$100m
Reserves +$10 Checkable deposits
+$100m
Loans +$90
Bank B Bank B
Assets Liabilities Assets Liabilities
Reserves +$90 Checkable deposits
+$90 Reserves +$9 Checkable deposits
+$90
Loans +$81
Multiple Deposit Creation: A Simple Model (Cont’d)
Deposit Creation: The Banking System
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Table 1 Creation of Deposits (assuming 10% reserve requirement and a $100 increase in reserves)
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Deriving The Formula for Multiple Deposit Creation
Assuming banks do not hold excess reserves
Required Reserves ( ) = Total Reserves ( )
= Required Reserve Ratio ( ) times the total amount
of checkable deposits ( )
Substituting
=
Dividing both s
RR R
RR r
D
r D R×ides by
1 =
Taking the change in both sides yields
1 =
r
D Rr
D Rr
×
∆ × ∆
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Critique of the Simple Model
• Holding cash stops the process– Currency has no multiple deposit expansion
• Banks may not use all of their excess reserves to buy securities or make loans.
• Depositors’ decisions (how much currency to hold) and bank’s decisions (amount of excess reserves to hold) also cause the money supply to change.
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Factors that Determine the Money Supply
• Changes in the nonborrowed monetary base MBn
– The money supply is positively related to the non-borrowed monetary base MBn
• Changes in borrowed reserves from the Fed– The money supply is positively related to the
level of borrowed reserves, BR, from the Fed
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Factors that Determine the Money Supply (cont’d)
• Changes in the required reserves ratio– The money supply is negatively related to the
required reserve ratio.
• Changes in currency holdings– The money supply is negatively related to
currency holdings.
• Changes in excess reserves– The money supply is negatively related to the
amount of excess reserves.
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Overview of the Money Supply Process
Summary Table 1 Money Supply Response
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M m MB= ×
The Money Multiplier
• Define money as currency plus checkable deposits: M1
• Link the money supply (M) to the monetary base (MB) and let m be the money multiplier
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Deriving the Money Multiplier
• Assume that the desired holdings of currency C and excess reserves ER grow proportionally with checkable deposits D.
• Then,c = {C/D} = currency ratioe = {ER/D} = excess reserves ratio
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Deriving the Money Multiplier (cont’d)
The total amount of reserves ( ) equals the sum of
required reserves ( ) and excess reserves ( ).
The total amount of required reserves equals the required
reserve ratio times the amount of
R
RR ER
R = RR + ER
checkable deposits
Subsituting for RR in the first equation
The Fed sets r to less than 1
RR = r × D
R = (r × D) + ER
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Deriving the Money Multiplier (cont’d)
• The monetary base MB equals currency (C) plus reserves (R):
MB = C + R = C + (r x D) + ER• Equation reveals the amount of the
monetary base needed to support the existing amounts of checkable deposits, currency and excess reserves.
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Deriving the Money Multiplier (cont’d)
c = {C / D} ⇒ C = c × D and
e = {ER / D} ⇒ ER = e × D
Substituting in the previous equation
MB = (r × D) + (e × D) + (c × D) = (r + e + c) × D
Divide both sides by the term in parentheses
D = 1
r + e + c× MB
M = D + C and C = c × D
M = D + (c × D) = (1+ c) × D
Substituting again
M = 1+ c
r + e + c× MB
The money multiplier is then
m = 1+ c
r + e + c
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Intuition Behind the Money Multiplier
r = required reserve ratio = 0.10
C = currency in circulation = $400B
D = checkable deposits = $800B
ER = excess reserves = $0.8B
M = money supply (M1) = C + D = $1,200B
c = $400B
$800B= 0.5
e = $0.8B
$800B= 0.001
m = 1+ 0.5
0.1+ 0.001+ 0.5= 1.5
0.601= 2.5
This is less than the simple deposit multiplier
Although there is multiple expansion of deposits,
there is no such expansion for currency
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Application: The Great Depression Bank Panics, 1930–1933, and the Money Supply
• Bank failures (and no deposit insurance) determined:– Increase in deposit outflows and holding of
currency (depositors)– An increase in the amount of excess reserves
(banks)
• For a relatively constant MB, the money supply decreased due to the fall of the money multiplier.
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Figure 1 Deposits of Failed Commercial Banks, 1929–1933
Source: Milton Friedman and Anna Jacobson Schwartz, A Monetary History of the United States, 1867–1960 (Princeton, NJ: Princeton University Press, 1963), p. 309.
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Figure 2 Excess Reserves Ratio and Currency Ratio, 1929–1933
Sources: Federal Reserve Bulletin; Milton Friedman and Anna Jacobson Schwartz, A Monetary History of the United States, 1867–1960 (Princeton, NJ: Princeton University Press, 1963), p. 333.
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Figure 3 M1 and the Monetary Base, 1929–1933
Source: Milton Friedman and Anna Jacobson Schwartz, A Monetary History of the United States, 1867–1960 (Princeton, NJ: Princeton University Press, 1963), p. 333.
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APPLICATION The 2007-2009 Financial Crisis and the Money Supply
• During the recent financial crisis, as shown in Figure 4, the monetary base more than tripled as a result of the Fed's purchase of assets and new lending facilities to stem the financial crisis
• Figure 5 shows the currency ratio c and the excess reserves ratio e for the 2007-2009 period. We see that the currency ratio fell somewhat during this period, which our money supply model suggests would raise the money multiplier and the money supply because it would increase the overall level of deposit expansion. However, the effects of the decline in c were entirely offset by the extraordinary rise in the excess reserves ratio e
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Figure 4 M1 and the Monetary Base, 2007-2009
Source: Federal Reserve; www.federalreserve.gov/releases.
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Figure 5 Excess Reserves Ratio and Currency Ratio, 2007-2009
Source: Federal Reserve; www.federalreserve.gov/releases.