Do different estimation methods lead to implausible differences in the size of the non-observed or shadow economies? : a preliminary answer

In this paper, first, six micro (4) and macro (2) estimation approaches are briefly described; they are the National Accounts Statistics discrepancy method and two new micro survey methods, a third one using a combination of company manager surveys and their knowledge to calibrate the size of the shadow economy in firms, and the consumption-income-gap of households method. The two macro methods are the MIMIC method and a structured hybrid method of the Currency demand and MIMIC models. Second, a detailed comparison of the results of four micro estimation methods with the macro MIMIC method are presented. One major result is that the estimated size of the shadow economy using the MIMIC method comes close to the size of the shadow economy of various types of recently developed micro survey methods. Third, using behavioral economics, some remarks are made about the reasons that individuals work in the shadow economy, and which estimation methods are best suited to apply this approach.