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The Fed Wire is an electronic funds
transfer system linking
the
Federal
Reserve Board of Governors,
the
twelve regional Federal Reserve Banks and their branches,
the
US Treasury Department, and
other
federal agencies.
Settlement of transfers is
same-day, which makes the system convenient for large fund transfers. US
banks maintain deposits with their regional Federal Reserve banks, which
allows them to use the system for settling a variety of interbank
transactions, such as loans,
certificates of deposit, or
repos .
The deposits are called Federal funds (or Fed funds).
The main reason banks hold them is because the Fed requires them to
maintain cash reserves as Fed funds.
Deposits at the regional Federal Reserve banks earn no interest, so
banks perform a balancing act every day, trying to offset transactions in
and out of their accounts so they end each day with Fed funds that equal
but do not exceed their reserve requirements for the day.
On any given day, some banks find themselves short Fed funds while
other banks find they have excess Fed funds. There are various ways banks
can lend each other their Fed funds. Repos are a form of
secured lending. There is also a
large market for unsecured loans. This is called the
Fed funds market. Most of those loans
are arranged by brokers. Transactions can be for
terms of as long as a year, but
the vast majority are overnight loans.
One way the Fed conducts its monetary policy is to set a
target interest rate for overnight Fed Funds. The actual rates banks pay
are negotiated by those banks, but by expanding or contracting the money
supply, the Fed can usually move those rates towards its target rate. When
you hear people speak about the Fed funds rate,
they may be referring to the Fed's stated target rate. They may also be
referring to the effective fed funds
rate. This is a dollar-weighted average of interest rates payable
on overnight Fed funds. It is compiled daily by the New York Federal
Reserve Bank and is based on transactions arranged by major brokers.
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