Book excerpt: The Treasury has again been unable to provide all the information needed by deadlines agreed with the OBR. The Government may, as the Chairman of the Office for Budget Responsibility suggested, have decided that for political reasons this was a "price worth paying." This would set an undesirable precedent. The work of the Office for Budget Responsibility depends on the Treasury meeting the agreed deadlines. The Committee welcomes the OBR's innovation of providing uncertainty ratings for policy costings. The Committee recommends in future that the OBR publish a breakdown of the uncertainty rating assessment against the three criteria for all announced measures at Autumn Statements and Budgets. The Committee also welcomes the Government's continued publication of the distributional analysis of the Government's policy changes and recommends that the next Government continue with this important aid to transparency. The current inflation target set by the Government is symmetrical, and is 2 per cent at all times. Several witnesses alluded to the risks of very low inflation and subsequent deflation, including the Chancellor. The Chancellor has publicly welcomed the current level of inflation. This is not likely to help anchor inflationary expectations. The Governor of the Bank of England is required to write to explain to the Chancellor why inflation has fallen below 1 per cent. It is important to avoid mixed messages on inflation targeting. The Bank of England should undertake research on the effect of net migration, and the potential for future net migration, on the supply of labour and wage growth as part of the work on meeting the MPC's remit. The Treasury should ensure that discussions within Government on immigration policy fully consider the requirements of the economy.