Applying a framework of perfect competition under uncertainty, we contribute to the discussion of whether or not ad valorem taxes and specific taxes are equivalent. While this equivalence holds without price uncertainty, we show that ad valorem taxes and specific taxes are "almost never"...

This study examines the sources of uncertainty in predicting government tax revenues in Israel. In the first stage, we estimate a model based on several real and financial macroeconomic variables and identify a significant, stable and highly accurate relation between these variables and tax...