CeDEx
Centre for Decision Research and Experimental Economics

CeDEx workshop - Johannes Abeler (University of Oxford)

Date(s)
Wednesday 1st May 2013 (14:00-15:00)
Description

Complex Tax Incentives - An Experimental Investigation

Abstract: How does the tax system's complexity affect people's reaction to tax changes? To answer this question, we conduct a real-effort experiment in which subjects receive a piece rate and face a set of taxes. In one treatment the tax system is simple; in the other treatment it is highly complex. The payoff-maximizing effort level and the incentives around this optimum are, however, identical across treatments. We then introduce the same sequence of additional tax rules in both treatments. We find that subjects in the complex treatment adjust their effort provision less in response to a new tax than subjects in the simple treatment. Many subjects in the complex treatment even ignore the new rule entirely, repeating their previous choice. Contrary to predictions from models of rational inattention, we find no evidence that subjects are less likely to ignore larger changes in incentives. Our results suggest that the effect of a newly introduced tax will be attenuated in a more complex tax system.

Centre for Decision Research and Experimental Economics

Sir Clive Granger Building
University of Nottingham
University Park
Nottingham, NG7 2RD

telephone: +44 (0)115 951 5458
Enquiries: jose.guinotsaporta@nottingham.ac.uk
Experiments: cedex@nottingham.ac.uk