The FR 2420 data is used to support the implementation of monetary policy and the analysis of money market conditions. 5  The Board of Governors of the Federal Reserve System is responsible for setting the rate of interest on reserves. Since December 16, 2008, the interest rates on required reserve balances and excess reserve balances have both been ¼ percent, but the rates need not be the same. More information can be found in Regulation D. See http://federalreserve.gov/bankinforeg/reglisting.htm#D. BIS central bankers’ speeches  3  transaction I just described is not riskless. As a result, many lenders limit their risk exposure to any individual bank, reducing the force of competition in the market for funds. 6 In addition, while banks do not need economic capital to conduct this arbitrage, they do face regulatory balance sheet costs from expanding their assets, even in the form of excess reserves, that is, cash. Some of these costs are direct, such as the FDIC fees paid by domestic banks on their liabilities less capital and transactions costs in brokered markets, while others relate to the costs associated with regulatory requirements on capital and liquidity ratios. Even if the market for funds were perfectly competitive, these costs should drive a wedge between IOER and other money market rates. As a result, the IOER rate does not directly establish a firm floor under money market rates, but instead can be thought of as a magnet, with the strength of its pull determined by these balance sheet and competitive frictions.
As described  10  In addition to improving competition in money markets, by conducting a daily operation with a known, fixed rate, the Fed can reduce uncertainty and absorb day-to-day variations in the supply of and demand for funds and collateral. An eligible lender that cannot earn the IOER rate and that has an unexpectedly large amount of funds to invest would be able to place the funds in the ON RRP facility rather than sell them in the market at an unusually low rate. This should reduce downward pressure on money market rates. 11  See the discussion in the minutes to the June and July FOMC meetings, http://www.federalreserve. gov/monetarypolicy/fomcminutes20140618.htm and http://federalreserve.gov/monetarypolicy/fomcminutes 20140730.htm. 12  See the Survey of Primary Dealers and the Survey of Market Participants. BIS central bankers’ speeches  5  earlier, if the magnetic pull of IOER alone is insufficient, ON RRPs should help to form a floor on rates by providing a risk-free, overnight asset to a broad range of non-bank investors. As a result of these forces, the effective funds rate should generally print within the target range. That said, as the Chair noted during her September press conference, the Committee expects that the effective fed funds rate may vary within the target range and could even move outside of it on occasion. For example, the effective rate could move outside the target for a day or two around key financial reporting dates, such as quarter-ends, when some banks’ marginal balance sheet costs are particularly high.