Kenneth Rogoff writes that “the only practical way to shorten the coming period of painful deleveraging and slow growth would be a sustained burst of moderate inflation, say, 4-6% for several years.” It certainly would be a way to reduce the real burden of debt, but is it the only or the best way?
The Federal Reserve has more direct control over nominal spending/nominal income than it has over inflation, and higher nominal income—whatever the ratio between the higher inflation and higher real growth that compose it—makes it easier to pay down debts (most of which are contracted in nominal terms). Because of wage stickiness, at least some of any increase in nominal spending that the Fed generates will take the form of real growth—and obviously one would prefer that portion to be as large as possible.
What we need, then, is not more inflation. We need for the Fed to stop holding the money supply below the demand for money balances. That might increase inflation, which would be a price worth paying to get nominal spending back to trend. But inflation shouldn’t be the goal.