This dissertation contains three chapters that examine various behavioral responses to statutory tax policies. In the first chapter, I develop a framework to estimate the impact of the marriage tax on the likelihood of marriage that incorporates into one analysis all four distinct household alternatives: single, cohabit, married, and separated. This is in contrast to previous works that consider only one of three separate choices. Using data from the March CPS from 1989-1999, I estimate a bivariate probit model and find that the marriage tax has a small, but significant, effect on the likelihood of marriage. Furthermore, my results indicate that studies that do not include all four possible alternatives can overstate by as much as 200% ...