The Nashville area seeks to undertake major transportation improvements given the region’s rapid economic growth, significantly increasing congestion, and the expectation that enhanced transportation services would spur even greater growth. This report focuses on one aspect of this challenging issue – how financing could be generated – by developing the capacity to forecast revenue for Nashville area counties. The revenues potentially could be used to finance major transportation improvements. The report concentrates on four major tax instruments: sales tax, property tax, hotel/motel tax, and wheel tax. The revenue estimating capacity is developed for 10 counties: Cheatham, Davidson, Dickson, Maury, Montgomery, Robertson, Rutherford, Sumner, Williamson, and Wilson counties.