Monetary Theory
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deposits and cannot reflect the fund availability of individual banks. Since
deposits are liabilities, a great amount of deposits only
means a large amount of
liabilities, and banks need to hold more reserves. For banks, the only indicator
that determines the fund availability is the amount of reserves. If we deduct the
amount of loans (as assets) and the reserves (real funds available to banks) from
deposits (as liabilities), we will not get the real amount of funds available as we
have expected. Just imagine a simplified case: Assuming that banks’ only profit-
able assets are loans. If a bank extends a 100-yuan loan, then a 100-yuan deposit
will be generated at the same time. Customers withdraw part of this 100 yuan
or transfer
part of it to other banks, and the remaining deposits will fall below
100 yuan, whereas the bank loan is still 100 yuan. The loan-to-deposit ratio is
above 100 percent. If the bank wants to lower the loan-to-deposit ratio, it needs
to get deposits from other banks. However, this will simultaneously increase the
loan-to-deposit ratio of other banks. Therefore, the loan-to-deposit ratio of all
banks cannot all fall below 100 percent. Overall lending
provided by banks as
a whole = deposits + cash withdrawn by clients, and the loan-to-deposit ratio
of banks as a whole only reflects the ratio by which deposits are converted
into cash. This is the real and simple reason behind the so-called overlending
of banks a few years ago. When banks buy the assets of their clients, the rela-
tionship between deposits and loans in the banking
system reflects how much
deposits are created by loans and how much deposits are created from bank’s
purchase of clients’ assets and the cash withdrawal ratio.
Since 1994, the loan-deposit gap in the banking system has disappeared;
instead there was the deposit-loan gap. The main reason for the deposit-loan
gap is the settlement of foreign exchange by banks. In 1994–1996, banks
settled a substantial amount of foreign exchange, and the central bank pur-
chased a large amount of foreign exchange. From 1994 to 1996, the central
bank had purchased an additional 700 billion yuan
of foreign exchange and
released the same amount of monetary base into circulation. Under the two-
tier foreign exchange market system, large BOP surplus will substantially
increase of commercial banks’ “deposits in PBC” (as assets) and the “deposits”
(as liabilities), and this process involves no loans. Therefore, the deposit-loan
gap continued to increase in the banking system. Since 1997, the inflow of
foreign exchange slowed down but still maintained a certain pace of growth,
which is reflected by the increase of the deposit-loan gap.
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