Eva Mörk

Evaluation of the Swedish earned income tax credit

Over the last twenty years we have seen an increasing use of in-work tax subsidies to encourage labor supply among low-income groups. In Sweden, a non-targeted earned income tax credit was introduced in 2007, and was reinforced in 2008, 2009 and 2010. The stated motive of the reform was to boost employment; in particular to provide incentives for individuals to go from unemployment to, at least, part-time work. In this paper we try to analyze the extensive margin labor supply effects of the Swedish earned income tax credit reform up to 2008. For identification we exploit the fact that the size of the tax credit, as well as the resulting average tax rate, is a function of the municipality of residence and income if working. However, throughout the analysis we find placebo effects that are similar in size to the estimated reform effects. In addition, the results are sensitive with respect to how we define employment, which is especially true when we analyze different subgroups such as men and women, married and singles. Our conclusion is that the identifying variation is too small and potentially endogenous and that it is therefore not possible to use this variation to perform a quasi-experimental evaluation of the Swedish EITC-reform.

Power properties of the Sargan test in the presence of measurement errors in dynamic panels

This article investigates the power properties of the Sargan test in the presence of measurement errors in dynamic panel data models. The conclusion from Monte Carlo (MC) simulations and an application on the data used by Arellano and Bond (1991), is that in the very likely case of measurement errors in either the dependent or any of the independent variables, we will, if we rely on the Sargan test, quite likely accept a misspecified model and end up with biased results.

Division of Powers

One of the main tasks when organizing a fiscal federalism structure in a country is to find the appropriate division of powers between different levels of government. In this chapter we discuss some principles of fiscal assignments and possible mechanisms for assigning functions. In addition, we study the Swedish case, investigating the present division of power and identifying potential problems with this division. Finally, we conclude our analysis by presenting some implications for constitutional design.

The Swedish Earned Income Tax Credit: Did It Increase Employment?

This paper analyzes the extensive-margin labor-supply effects of a Swedish earned income tax credit introduced in 2007. The reform was one of the governments flagship reforms to boost employment, but its actual effects have been widely debated. We exploit the fact that the size of the tax credit is a function of the municipality of residence and income if working, which yields two sources of quasi-experimental variation. The identifying variation, however, turns out to be small and potentially endogenous, which means that the question of whether the reform has delivered the hoped-for effects cannot be credibly answered.