This paper examines the optimal direction of marginal income tax reform in the context of New Zealand, which recently reduced its top marginal income tax rate to one of the lowest in the OECD. A behavioural microsimulation model is used, in which social welfare functions are defined in terms of...

pt. 1. Introduction. 1. Introduction and outline -- pt. 2. Corporate profits and tax revenue. 2. The revenue elasticity. 3. Tax loss asymmetries. 4. Taxes and income shifting -- pt. 3. A simulation model. 5. The distribution of profits. 6. Modelling deductions -- pt. 4. Corporate tax...