300 likes | 1.24k Views
Chapter 16. Determinants of the Money Supply. Money multiplier Factors that determine multiplier & MS Applications: Great Depression. given problems with simple money multiplier, construct better multiplier cash holdings excess reserves holdings based on M1 = C + D. I. money multiplier.
E N D
Chapter 16. Determinants of the Money Supply • Money multiplier • Factors that determine multiplier & MS • Applications: Great Depression
given problems with simple money multiplier, • construct better multiplier • cash holdings • excess reserves holdings • based on M1 = C + D
I. money multiplier • how $1 change in MB will affect MS: M = m x MB
1 + c m = rD + e + c rD = required reserve ratio c = ratio of currency to deposits e = ratio of excess reserves to deposits
1 + .5 example rD = .10 C = $400 billion D = $800 billion ER = $.8 billion or $800 million m = = 2.5 .10 + .001 + .5 $1 increase in MB, $2.5 increase in M
II. Factors affecting m & MS • changes in rD • changes in c • changes in e • changes in MB
changes in rD • higher reserve requirement • fewer excess reserves to lend • smaller amount of deposit creation smaller multiplier higher rD
1 + .5 example • rD was .10 • suppose it rises to .20 m = .20 + .001 + .5 m = 2.14
changes in c • higher c • currency does not expand like deposits • smaller amount of deposit creation smaller multiplier higher c
1 + .8 example • original example: c = .5 • suppose c = .8 m = = 2.00 .10 + .001 + .8
changes in ER/D • higher e • banks hold more ER, lend less • smaller amount of deposit creation smaller multiplier higher e
1 + .5 example • original example: e = .001 • suppose e = .005 m = = 2.48 .10 + .005 + .5
what affects e? • as interest rates rise • opportunity cost of holding ER rise • (money could be lent out) ER fall higher i
expected deposit outflows • must hold more ER
Factors affecting MB • MB = MBn + DL • MBn is nonborrowed MB -- open market purchase will increase MBn -- open market sale will decrease MBn • increase MBn will increase M
DL is discount loans -- increase as banks borrow from the Fed -- increase as spread between market interest rate and discount rate increases
Great Depression 1930-33 • big contraction in M1 • big increases in c, e • depositors withdrew cash • banks increase ER due to increase in deposit outflow
as c and e rise, • money multiplier declines • M1 declines by 25% from 1930-33