This paper develops an empirical approach to optimal income taxation design within an equilibrium collective marriage market model. Taxes distort labour supply and time allocation decisions, as well as marriage market outcomes, and the within household decision process.

Using data from the American Community Survey and American Time Use Survey we structurally estimate our model and explore empirical design problems. We consider the optimal design problem when the planner is able to condition taxes on marital status, as in the U.S. tax code, but for married couples we allow for an arbitrary form of tax jointness. Joint with George-Levi Gayle