The Bank’s rationale for doing an additional £75 billion of quantititative easing is set out below. When asked in August about what would prompt the Bank to do more, both Sir Mervyn King and Charlie Bean said it would be the expectation of an undershoot of the 2% inflation target. Sure enough, that is included in paragraph four below. But the Bank’s forecasting record on inflation, frankly, inspires little confidence on this score.

“The pace of global expansion has slackened, especially in the United Kingdom’s main export markets. Vulnerabilities associated with the indebtedness of some euro-area sovereigns and banks have resulted in severe strains in bank funding markets and financial markets more generally. These tensions in the world economy threaten the UK recovery.

“In the United Kingdom, the path of output has been affected by a number of temporary factors, but the available indicators suggest that the underlying rate of growth has also moderated. The squeeze on households’ real incomes and the fiscal consolidation are likely to continue to weigh on domestic spending, while the strains in bank funding markets may also inhibit the availability of credit to consumers and businesses. While the stimulatory monetary stance and the present level of sterling should help to support demand, the weaker outlook for, and the increased downside risks to, output growth mean that the margin of slack in the economy is likely to be greater and more persistent than previously expected.

“CPI inflation rose to 4.5% in August. The present elevated rate of inflation primarily reflects the increase in the standard rate of VAT in January and the impact of higher energy and import prices. Inflation is likely to rise to above 5% in the next month or so, boosted by already announced increases in utility prices. But measures of domestically generated inflation remain contained and inflation is likely to fall back sharply next year as the influence of the factors temporarily raising inflation diminishes and downward pressure from unemployment and spare capacity persists.

“The deterioration in the outlook has made it more likely that inflation will undershoot the 2% target in the medium term. In the light of that shift in the balance of risks, and in order to keep inflation on track to meet the target over the medium term, the Committee judged that it was necessary to inject further monetary stimulus into the economy. The Committee therefore voted to increase the size of its asset purchase programme, financed by the issuance of central bank reserves, by £75 billion to a total of £275 billion. The Committee also voted to maintain Bank Rate at 0.5%. The Committee expects the announced programme of asset purchases to take four months to complete. The scale of the programme will be kept under review.”

This post originally appeared at David Smith’s EconomicsUK and is reproduced with permission.