Ministries of Finance and Tax Departments must make annual revenue forecasts as part of the budget process and also to plan their work programs.  In most countries of the world, pluriannual revenue forecasts are needed for longer-term budgeting and planning purposes.

This tool features a Revenue Projection Model for Tanzania, although the template has been put into use in other countries as well, including Angola and El Salvador. The model is presented in MS Excel and the accompanying documentation explains the analysis that went into developing the model, making the model is easily accessible to non-technical analysts.  The model is based on calculations of effective rates, elasticities, and some regression analysis.  Though the Tanzania Revenue Authority's Research and Policy Department staff developed the model in 1999, it is still used today, albeit updated and improved.

Download:  Revenue Projection Model (XLS)            Documentation (DOC)