Description and use of the model EXPEDITION [ DC2024_WP_03 - 06/02/2024]

In the framework of the election costing exercise the impact on the distribution of disposable income is measured for a number of measures proposed by political parties. Administrative micro-data are used for this exercise. This approach allows that the impact of the measures studied is reported at the level of individual or household characteristics. The policy measures whose impact on the distribution of disposable income is calculated are measures situated within the domain of social security and social assistance, supplemented by the regulations on family allowances, the contribution rules applied to these benefits and the rules on personal income tax. The tool used for these calculations is the microsimulation model EXPEDITION. The present paper describes the main features of the EXPEDITION model and illustrates its operation on the basis of two simulations.