A 'Live' Version of the HOS Model with Interventions

We present a numerical version of the factor proportions (Heckscher-Ohlin-Samuelson) model of production in a small economy, built in Excel that features tax interventions at the input, output, consumption and trade levels. The model features the most common graphical devices used to explain the model properties, including integrating partial equilibrium geometry corresponding to the general equilibrium system. The solution is embedded in the sheet, making the use of the Solver add-in unnecessary. The model can be used to demonstrate the a wide variety of results from the neoclassical theory of commercial policy.