This paper extends behavioural microsimulation modelling so that third round effects of a policy change can be simulated. The Þrst round effects relate to fixed hours of work, while second round effects allow for changes in desired hours of work at unchanged wages. These allow for endogenous...

This paper derives and estimates an econometric model of labour supply among sole parents in Australia, using modelling techniques which treat the labour supply decision as a utility maximising choice between a given number of discrete states. In estimation, we control for random preference...

There have been significant recent advances in the estimation of labour supply models. Here the hours continuum is split into a number of discrete options and the preferred choice obtained as the solution to a constrained utility maximisation problem. However, the underlying probabilities of an...

This paper describes microsimulation modelling in non-technical terms and explains what can be achieved with microsimulation modelling in general, and the Melbourne Institute Tax and Transfer Simulator (MITTS) in particular. The focus is on behavioural microsimulation modelling, which takes...

This paper presents a method of computing welfare changes (compensating and equivalent variations) arising from a tax or social security policy change, in the context of behavioural microsimulation modelling where individuals can choose between a limited number of discrete hours of work. The...

This paper presents two 'non-welfarist' approaches and one 'welfarist' approach to decompose changes in inequality and social welfare into three components. We distinguish the contributions of population, tax policy and labour supply behavioural effects. As an illustration, we decompose changes...

This paper examines the implications, for overall social welfare and inequality comparisons, of using different definitions of the unit of analysis - the income recipient - in computing summary measures. Comparisons are made using the Melbourne Institute Tax and Transfer Simulator (MITTS), a...

This publication is a manual for the use of the Melbourne Institute Tax and Transfer Simulator (MITTS). MITTS provides a tool for analysing policy changes. It allows us to examine the effect of a variety of policy changes on labour supply and income distribution for the Australian.

The assumption behind discrete hours labour supply modelling is that utility-maximising individuals choose from a relatively small number of hours levels, rather than being able to vary hours worked continuously. Such models are becoming widely used in view of their substantial advantages,...

This paper investigates the use of sample reweighting in a behavioural tax microsimulation model, to examine the implications for government taxes and expenditure of population ageing in Australia. First, a calibration approach to sample reweighting is described, producing new weights which...