William Davidson Institute Working Paper 402
of-transition value of about 4.15 Clearly, the main responsible for increases in money
stock are increases in the monetary base.
Figure 4. Money stock and the base multiplier. January 1995 to March 2001.
M2 is expressed in billion lei, right hand axis. Source: NBR, Monthly Statistical
Bulletins.
7.2 The structure of the base multiplier
However, a deeper analysis of the multiplier could be useful. Let us consider
that commercial banks hold as reserves (deposits at the central bank) a proportion r<1
of their deposits in lei and a proportion ρ<1 of their dollar denominated deposits.
Banking regulation determines a minimum reserve requirement; in addition, banks in
the developed world would hold some limited amount of excess reserves if the
volatility of the flow of deposits were high.16 Private agents would hold cash in
proportion b to their lei deposits, in keeping with their payment habits. They would
also hold d lei in dollar denominated deposits for every leu deposit (we assume for
simplicity that people would not hold dollars cash, given that they cannot use it as
such for transaction purposes and that dollars notes carry no interest17).
Let us denote by D the lei deposits (to simplify, we make no difference
between demand, time and savings deposits). The money stock is M = Cash +Lei
deposits + $deposits = bD + D + dD = D(1 + b + d). The money base is: B = Cash +
Reserves = bD + rD + ρdD = D(r + b + ρd). The money multiplier is thus:
15 One may point at the exceptional conditions in 1997, when inflation was 151% and real money
supply plummeted; by comparison, 1997-1998 were like an intermezzo, to be followed by return to
what seems to be normality in Romania - a money multiplier of around 4.
16 Minimum reserves bear an interest rate fixed on a periodic base by the NBR (e.g, 25% on reserves
build for lei deposits in July 2001). Excess reserves are remunerated at a much lower rate (for
overnight deposits, the interest rate was 5% in July 2001).
17 In practice, firms and individuals would use hard currency in cash for certain transactions, even if
this is illegal. Transactions with VISA and other credit cards often are denominated directly in dollars.
15
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