The paper uses survey data to analyze whether financial market expectations on government budget deficits changed in France, Germany, Italy, and the United Kingdom during the period of the Stability and Growth Pact (SGP). Our findings indicate that accuracy of financial expert deficit forecasts increased in France. Convergence between the European Commission's and market experts’ deficit forecasts also increased in France, Italy, and the United Kingdom, particularly during the period after SGP’s reform in 2005. Yet, convergence between markets’ forecasts and those of the French, German, and Italian national fiscal authorities seems not to have increased significantly during the SGP.
Year-ahead forecasts of tax revenues incorporated into IMF programs for low-income countries, from 1993 to 1999, are compared with the corresponding outturns. The accuracy of these forecasts was low, with a mean absolute percentage error of 16 percent. Forecasts of tax revenues as a percentage of GDP were biased upwards, but there was no significant bias in forecasts of nominal tax revenues. Upward bias in the tax revenue forecasts was associated with subsequent interruptions to the program, and the length of time between the commencement of the program and the beginning of the year for which the forecast was made.