Tax Compliance via Social Norms

Behavioural Insights Team (2011)
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Summary by 
Mark Egan

The Behavioral Insights Team in the U.K. used social normative messages to increase tax compliance in 2011. The control group received standard tax letters. The treatment groups received the letters with an added normative messages. The difference in compliance rates between the control and the most effective treatment group was 15 percentage points.