CAS EC 202 Lecture Notes - Lecture 5: Money Multiplier, Reserve Requirement, Excess Reserves

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In each scenario, we assume c = ,000: scenario 1: no banks, with no banks, d = 0 and m = c = ,000, scenario 2: 100-percent-reserve banking. If this is eventually deposited in thirdbank, then thirdbank will keep. 20% of it in reserve and loan the rest out: thirdbank"s balance sheet, assets: reserves , loans , liabilities: deposits , finding the total amount of money. + other lending : total money supply = (1/rr) x where rr = ratio of reserves to deposits. = (c+d)/(c+r) = [(c/d)+(d/d)]/[(c/d)+(r/d)] = (cr+1)/(cr+rr: the money multiplier, m = m * b, where m = (cr+1)/(cr+rr, m is the money multiplier, the increase in the money supply resulting. If rr < 1, then m > 1. Impact of an increase in the currency-deposit ratio cr > 0: an incerase in cr increases the denominator of m proportionally more than the numberator. Banks often hold excessive reserves (reserves above the reserve requirement).

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