The views expressed are those of the authors and do not necessarily reflect those of the BIS.BIS Working Papers are written by members of the Monetary and Economic Department of the Bank for International Settlements, and from time to time by other economists, and are published by the Bank. The views expressed in them are those of their authors and not necessarily the views of the BIS.

No one in the industrial countries should now question the substantial economic benefits associated with reducing inflation from earlier, high levels. At the same time, history also teaches that the stability of consumer prices might not be sufficient to ensure macroeconomic stability. Past experience is replete with examples of major economic and financial crises that were not preceded by inflationary pressures. Conversely, history shows that many periods of deflation, based on rising productivity, were simultaneously characterised by rapid growth. Recent structural changes in the global economy imply that this history might have more contemporaneous relevance than is commonly thought. If so, the implication is that policies directed to the pursuit of price stability might have to be applied more flexibly and with a longer-run focus than has recently been the case.

The successful pursuit of the objective of low inflation by central banks in recent decades has also delivered low variability of both inflation and output. At the same time, numerous financial and other "imbalances" (defined here as significant and sustained deviations from historical norms) have emerged. Should these imbalances revert to the mean, there could be significant effects on output growth. Although such an adverse outcome remains only a possibility, the question asked in this paper is whether we might still benefit from a new macrofinancial stabilisation framework in which monetary and regulatory policies gave more attention to avoiding the emergence of imbalances in the first place.

BIS Working Papers are written by members of the Monetary and Economic Department of the Bank for International Settlements, and from time to time by outside economists, and are published by the Bank. The papers are on subjects of topical interest and are technical in character. The views expressed in them are those of their authors and not necessarily the views of the BIS.

It has been contended by many in the central banking community that monetary policy would not be effective in "leaning" against the upswing of a credit cycle (the boom) but that lower interest rates would be effective in "cleaning" up (the bust) afterwards. In this paper, these two propositions (can't lean, but can clean) are examined and found seriously deficient. In particular, it is contended in this paper that monetary policies designed solely to deal with short term problems of insufficient demand could make medium term problems worse by encouraging a buildup of debt that cannot be sustained over time. The conclusion reached is that monetary policy should be more focused on "preemptive tightening" to moderate credit bubbles than on "preemptive easing" to deal with the after effects. There is a need for a new macrofinancial stability framework that would use both regulatory and monetary instruments to resist credit bubbles and thus promote sustainable economic growth over time.