With monetary policy being so accommodative now, though, it is not unreasonable to ask whether we are sowing the seeds of future inflation. A related question I sometimes hear--which bears also on the relationship between monetary and fiscal policy, is this: By buying securities, are you "monetizing the debt"--printing money for the government to use--and will that inevitably lead to higher inflation? No, that's not what is happening, and that will not happen. Monetizing the debt means using money creation as a permanent source of financing for government spending. In contrast, we are acquiring Treasury securities on the open market and only on a temporary basis, with the goal of supporting the economic recovery through lower interest rates. At the appropriate time, the Federal Reserve will gradually sell these securities or let them mature, as needed, to return its balance sheet to a more normal size. Moreover, the way the Fed finances its securities purchases is by creating reserves in the banking system. Increased bank reserves held at the Fed don't necessarily translate into more money or cash in circulation, and, indeed, broad measures of the supply of money have not grown especially quickly, on balance, over the past few years.
For controlling inflation, the key question is whether the Federal Reserve has the policy tools to tighten monetary conditions at the appropriate time so as to prevent the emergence of inflationary pressures down the road. I'm confident that we have the necessary tools to withdraw policy accommodation when needed, and that we can do so in a way that allows us to shrink our balance sheet in a deliberate and orderly way. For example, the Fed can tighten policy, even if our balance sheet remains large, by increasing the interest rate we pay banks on reserve balances they deposit at the Fed. Because banks will not lend at rates lower than what they can earn at the Fed, such an action should serve to raise rates and tighten credit conditions more generally, preventing any tendency toward overheating in the economy.
Of course, having effective tools is one thing; using them in a timely way, neither too early nor too late, is another. Determining precisely the right time to "take away the punch bowl" is always a challenge for central bankers, but that is true whether they are using traditional or nontraditional policy tools. I can assure you that my colleagues and I will carefully consider how best to foster both of our mandated objectives, maximum employment and price stability, when the time comes to make these decisions.