Interest rates are too blunt an instrument for that, and attempts to use interest rates for financial stability purposes would cause considerable collateral damage to inflation and the real economy. Instead, the best instruments to achieve financial stability are supervision and regulation, including appropriate bank resolution regimes. In many countries, the responsibility for these instruments rests on other authorities than the central bank. Generally, to the extent financial instability depends on specific distortions, good regulation should aim to attack these distortions as close to the source as possible. To counter the observed procyclicality of existing regulation, macro-prudential regulation that is contingent on the business cycle and financial indicators may need to be introduced to induce better financial stability. Possible macro-prudential regulation includes variable capital, margin, and equity/loan requirements. As expressed by Bean (2009), “the best approach is likely to involve a portfolio of instruments”. What are the specific conclusions for flexible inflation targeting? One old conclusion is that consideration of the impact of financial factors on the forecast of inflation and resource utilization may require longer forecast horizons. Several inflation-targeting central banks (including the Bank of England, Norges Bank and the Riksbank) have for other reasons already extended their forecast horizon from the previously common two years to three years. There is nothing that in principle prevents an inflation targeter from considering forecasts beyond a three-year horizon, but in practice there is usually little information about anything at longer horizons except the tendency to revert to the long-term average.

In the event of conflicting objectives, it achieves a reasonable compromise between the stability of inflation and the stability of resource  BIS Review 112/2009  1  utilization. 1 Different central banks express this in slightly different words. The Riksbank has often used the term “well-balanced” monetary policy. 2 The forecasts of inflation and the real economy are then conditional on the central bank’s view of the transmission mechanism, an estimate of the current state of the economy and a forecast of important exogenous variables. The central bank uses all relevant information that has an impact on the forecast of inflation and the real economy. In this framework, the central bank takes financial conditions such as credit growth, asset prices, imbalances, potential bubbles and so on into account only to the extent that they have an impact on the forecast of inflation and resource utilization. Inflation and resource utilization are target variables here, that is, variables that are arguments of the central bank’s loss function. Hence, financial conditions are not target variables. Instead, they are only indicators, as they provide information about the state of the economy, the transmission mechanism and exogenous shocks to the central bank. Financial conditions then affect policy rates only to the extent that they have an impact on the forecast of inflation and resource utilization. 3 3. Financial stability as a rarely binding constraint – a pre-crisis view  What is the role of financial stability in a pre-crisis view of flexible inflation targeting?