Between them the IOER rate and the implicit ON - RRP rate define the upper and lower limits, respectively, of an effective federal funds rate target «range,» because most of the limited trading that now goes on in the federal funds market consists of overnight lending by GSEs (and the Federal Home Loan Banks especially), which are not eligible for IOER, to ordinary banks, which are. (alt-m.org)
During this period, the Federal Reserve tried to support employment by cutting its federal funds rate target nearly to zero; by creating a number of special liquidity facilities to support the extension of credit; and by engaging in a large scale asset purchase program, buying Treasuries, agency debt and agency mortgage - backed securities. (newyorkfed.org)
And the Fed's federal funds rate target? (alt-m.org)