This paper incorporates tax morale into the Allingham and Sandmo (1972) model of income tax evasion. Tax morale is modeled as a social norm for tax compliance. The strength of the norm is shaped endogenously, depending on the share of evaders in the society. Taxpayers act conditionally...

We analyze survey evidence on individuals' willingness to sanction law violations – such as evading taxes, drunk driving and fare dodging – by disapproval or social exclusion. Our data show that people condition their willingness to sanction a norm violation on their belief about its...