The December 2018 FOMC minutes are out and reveal members continue to discuss the potential long-run frameworks for monetary policy implementation. Their discussion as to whether they should keep their current floor operating system or move to a corridor operating system can be illustrated using the figure below:
The FOMC likes the floor system since it separates the size of the Fed’s balance sheet from the setting of its target interest rate. This added flexibility is possible because the reserve supply schedule is on the horizontal part of the reserve demand curve as seen above. Here, banks will take all the reserves sent their way–killing off interbank lending–as their demand for reserves is perfectly elastic. The corridor system puts the reserve schedule back on the downward
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