The IRS’s Statistics of Income Division today released Calendar Year Projections of Information and Withholding Documents for the United States and IRS Service Centers, 2004-2012:

Office of Research staff within Research, Analysis and Statistics of Income organization provides calendar year projections of information and withholding documents on an annual basis to accommodate the most recent filing year experience. These projections of Information Reporting Program (IRP) documents incorporate current legislative and administrative initiatives, as well as relevant economic and demographic trends. Data series forecasts provided by Global Insight, Inc., are used by Research staff in projecting IRP documents. The information and withholding document projections contained within this document are used primarily by the IRS operational and resource planning functions to assist in the formulation of their budget submissions and staffing requirements, and to complete various other analyses. Enacted tax law changes and confirmed administrative plans are reflected in these projections. However, legislative or administrative initiatives simply under consideration are generally not used to adjust the projections due to the uncertain nature of their eventual outcome.