This study presents an improvement of the King-Fullerton framework for calculating the marginal effective tax rate (METR) for active owners of closely held corporations in a dual income tax system with income splitting rules. The original King and Fullerton model was not modeled to incorporate...

Using an estimated life-cycle model, we quantify the role of heterogeneity in wealth returns for the response of income to marginal tax changes. In our economy, agents who are sufficiently productive can obtain higher returns by choosing to be entrepreneurs. Return heterogeneity amplifies the...