Prior multistate tax research on differences in state tax rules, while investigating the effects on revenue, investment, and tax burden, is silent regarding the effect on compliance costs. We investigate factors that explain state income tax compliance costs for large firms. We find that state...

We investigate how firms use differences in state income tax regimes to lower their state tax burdens. We develop a model that predicts that firms' state effective tax rates first decrease then increase as a function of the number of states in which they file returns. Using firm-level data, we...