Joe Leote brought the following paper by Professor Werner to my attention, and I think it would be of interest to the group.
http://www.sciencedirect.com/science/article/pii/S1057521914001070
The author identifies three theories of banking which he claims are mutually exclusive, each of which has dominated macroeconomic thinking at different times in the past century. They are (1) the credit creation theory until about 1930, (2) the fractional reserve theory until about 1970, and (3) the financial intermediation theory since then.
According to the author, banks are currently viewed as mere financial intermediaries that gather resources and re-allocate them, just like other non-bank financial institutions, and without any special powers. Any differences between banks and non-bank financial institutions are seen as being due to regulation and effectively so minimal that they are immaterial for modeling or for policy-makers. Thus it is thought to be permissible to model the economy without featuring banks directly.
In the fractional reserve theory, the dominant view was that the banking system is unique, since banks unlike other financial intermediaries can collectively create money, based on the fractional reserve or ‘money multiplier’ model of banking. Despite their collective power, however, each individual bank is considered to be a mere financial intermediary, gathering deposits and lending these out, without the ability to create money.
The credit creation theory, in line with the fractional reserve theory, maintains that the banking system creates new money. However, it goes further than the latter and differs from it in a number of respects. It argues that each individual bank is not a financial intermediary that passes on deposits, or reserves from the central bank in its lending, but instead creates the entire loan amount out of nothing.
The author’s intent
is to prove empirically that banks create money out of thin air, a point
that MMTers have always taken as axiomatic. Since this supports the credit creation theory of banking, he eliminates the competing theories as unrealistic.
However the three are not mutually exclusive as the author claims. And banks are not as free to create deposits through lending as the author implies. Banks can only lend to willing borrowers. When the public is deleveraging as it has been for several years, finding creditworthy borrowers can be a limiting factor on bank lending. Unless banks can sell off their loans, they are not going to lend freely as they did during the recent housing bubble.
Monetary policy set by the Fed influences the demand for loans and thus limits aggregate bank lending. Banks must hold reserves sufficient to cover the loans they make. That means their creditworthiness must be excellent or they cannot borrow reserves when needed.
There are important ways that set banks apart from non-bank financial institutions. Banks play a central role in the payment system and lend by crediting transaction accounts. Non-banks play no direct role in the payment system and can only lend their own funds. However they are a major source of credit in the economy, mainly with funds borrowed in the bond market rather than from banks.
William
----- Original Message -----From: William F HummelTo: Money GroupSent: Sunday, December 21, 2014 11:03 AMSubject: Three theories of banking