The theory of endogenous money has tended to reduce to a debate over t
he slope of the LM. This is because endogenous money is a dynamic phen
omenon, and its implications are masked in static models such as ISLM.
This paper examines the role of endogenous money in credit-driven bus
iness cycles. A key distinction concerns that between bank and direct
credit. The former is more expansionary because it involves creation o
f new money balances, whereas the latter involves transfer of existing
money balances. The paper provides a simulation revealing instability
emerges at a lower debt-income ratio as the share of bank debt in tot
al debt rises.