JTC Econometrics has been involved in the construction of macro-econometric models for forecasting key indicators of the national and Colorado economies in order to project state, district, and local tax revenues. These projects have included consultancies for the Governor’s Office of Colorado, the Regional Transportation District of the Colorado Front Range, and the Office of Finance at the University of Colorado, and the City of Aurora, Colorado. In collaboration with colleagues at the Leeds School of Business at CU Boulder, we have constructed models based on contemporary methodologies of time series econometrics in order to produce reliable, accurate, and transparent forecasts.