Minsky distinguished between three types of finance—hedge finance,
speculative finance, and Ponzi finance—on the basis of the relation
between the operating income and the debt service payments of indi-
vidual borrowers. A firm is in the hedge finance group if its anticipated
operating income is more than sufficient to pay both the interest and
scheduled reduction in its indebtedness. A firm is in the speculative fi-
nance group if its anticipated operating income is sufficient so it can pay
the interest on its indebtedness; however the firm must use cash from
new loans to repay part or all of the amounts due on maturing loans. A
firm is in the Ponzi group if its anticipated operating income is not likely
to be sufficiently large to pay all of the interest on its indebtedness on
the scheduled due dates; to get the cash the firm must either increase its
indebtedness or sell some assets.
Minsky’s hypothesis is that when the economy slows, some of the
firms that had been involved in hedge finance are shunted to the group
involved in speculative finance and that some of the firms that had been
involved in the speculative finance group now find they are in the Ponzi
finance group.
The term ‘Ponzi finance’ memorializes Carlos Ponzi, who operated a
small loans company in one of the Boston suburbs in the early 1920s.
Ponzi promised his depositors that he would pay interest at the rate of
30 percent a month and his financial transactions went smoothly for
three months. In the fourth month however the inflow of cash from new
depositors was smaller than the interest payments promised to the older
borrowers and eventually Ponzi went to prison.
The term Ponzi finance is now a generic term for a nonsustainable
pattern of finance. The borrowers can only meet their commitments to
pay the high interest rates on their outstanding loans or deposits if they
obtain the cash from new loans or deposits. Since in many arrangements
the interest rates are very high, often 30 to 40 percent a year, the contin-
uation of the arrangement requires that there be a continuous injection
of new money and often at an accelerating rate. Initially many of the
existing depositors are so pleased with their high returns that they allow
their interest income to compound; the clich ́ is that they are ‘earning
interest on the interest.’ As a result the inflow of new money can be below
the promised interest rate for a few months. But to the extent that some
depositors take some of their interest returns in cash, the arrangement
can operate only as long as these withdrawals are smaller than the inflow
of new money.
The result of the continuation of the process is what Adam Smith and his
contemporaries called ‘overtrading.’ This term is less than precise and in-
cludes speculation about increases in the prices of assets or commodities,
an overestimate of prospective returns, or ‘excessive leverage.’3 Specula-
tion involves buying commodities for the capital gain from anticipated
increases in their prices rather than for their use. Similarly speculation
involves buying securities for resale rather than for investment income
attached to these commodities. The euphoria leads to an increase in the
optimism about the rate of economic growth and about the rate of in-
crease in corporate profits and affects firms engaged in production and
distribution. In the late 1990s Wall Street security analysts projected
that U.S. corporate profits would increase at the rate of 15 percent a
year for five years. (If their forecasts had been correct, then at the end
of the fifth year the share of U.S. corporate profits in U.S. GDP would
have been 40 percent higher than ever before.) Loan losses incurred by
the lenders decline and they respond and become more optimistic and
reduce the minimum down payments and the minimum margin require-
ments. Even though bank loans are increasing, the leverage—the ratio
of debt to capital or to equity—of many of their borrowers may decline
because the increase in the prices of the real estate or securities means
that the net worth of the borrowers may be increasing at a rapid rate.
A follow-the-leader process develops as firms and households see that
others are profiting from speculative purchases. ‘There is nothing as
disturbing to one’s well-being and judgment as to see a friend get rich.’4
Unless it is to see a nonfriend get rich. Similarly banks may increase their
loans to various groups of borrowers because they are reluctant to lose
market share to other lenders which are increasing their loans at a more
rapid rate. More and more firms and households that previously had
been aloof from these speculative ventures begin to participate in the
scramble for high rates of return. Making money never seemed easier.
Speculation for capital gains leads away from normal, rational behavior
to what has been described as a ‘mania’ or a ‘bubble.’
The word ‘mania’ emphasizes irrationality; ‘bubble’ foreshadows that
some values will eventually burst. Economists use the term bubble to
mean any deviation in the price of an asset or a security or a commod-
ity that cannot be explained in terms of the ‘fundamentals.’ Small price
variations based on fundamentals are called ‘noise.’ In this book, a bub-
ble is an upward price movement over an extended period of fifteen
to forty months that then implodes. Someone with ‘perfect foresight’
should have foreseen that the process was not sustainable and that an
implosion was inevitable.