The Impact of Payroll Taxes on Informality : The Case of the 2012 Colombian Tax Reform
In 2012, the Colombian Government reduced employer payroll contributions from 29.5 to 16.0 percent. Two years later, the informality rate had diminished by about 4.0 per-centage points. This paper attempts to estimate how much of this reduction was due to the tax reform, isolating the impact of other macroeconomic variables. A natural approach to perform-ing this task is to apply a difference-in-differences methodology using a household survey panel. Since the Colombian survey does not have a panel structure, we simulated one using a matching difference-in-differences methodology. According to the results, the tax reform is associated with a 4.8-percentage-point decrease in the informality of workers affected by the reform in the thirteen main metropolitan areas. This represents approximately half the reduction of the relevant informality rate during that period, affecting mostly salaried men and workers in general with low levels of education.
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