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This paper examines the macroeconomic impact of the first round of quantitative easing (QE) by the Bank of England which started in March 2009. Although Bank Rate, the UK policy rate, was reduced to ½%, effectively its lower bound, the Bank’s Monetary Policy Committee felt that additional measures were necessary to meet the inflation target in the medium term. The policy of QE entailed buying private and mainly public assets in large quantities using central bank money, with the aim of injecting money into the economy and boosting nominal spending, in order to help achieve the Bank’s inflation target. Over the period from March 2009 to January 2010, the Bank of England purchased £200 billion of assets, mainly consisting of government securities. We attempt to quantify the effects of these purchases by focusing on the impact of lower long-term interest rates on the wider economy. This is motivated by empirical evidence indicating that QE purchases reduced long-term UK government bond yields by about 100 basis points. Other transmission channels are also possible, but are not considered in this paper. We use three different models to conduct counterfactual simulations to estimate the impact of QE on output and inflation: a large Bayesian VAR; a change-point structural VAR; and a time-varying parameter VAR. Our preferred average estimates from the three models suggest that QE may have had a peak effect on the level of real GDP of around 1½% and a peak effect on annual CPI inflation of about 1¼ percentage points. These estimates are shown to vary considerably across the different model specifications, and with the precise assumptions made to generate the counterfactual simulations, and are therefore subject to considerable uncertainty.

As part of its response to the global banking crisis and a sharp downturn in domestic economic prospects, the Bank of England’s Monetary Policy Committee (MPC) began a programme of large-scale asset purchases (commonly referred to as quantitative easing or QE) in March 2009, with the aim of injecting additional money into the economy and so increasing nominal spending growth to a rate consistent with meeting the CPI inflation target in the medium term. By February 2010, the MPC had made £200 billion of purchases, most of which had been of UK government securities (gilts). Based on analysis of the reaction of financial market prices and econometric estimates, this paper attempts to assess the impact of the Bank’s QE policy on asset prices. Our estimates of the reaction of gilt prices to the programme suggest that QE may have depressed gilt yields by about 100 basis points. On balance the evidence seems to suggest that the largest part of the impact of QE came through a portfolio rebalancing channel. The wider impact on other asset prices is more difficult to disentangle from other influences: the initial impact was muted but the overall effects were potentially much larger, though subject to considerable uncertainty.