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The FPB’s studies cover 11 main themes: Energy, Environmental economic accounts and analyses, International economy, Labour market, Macroeconomic forecasts and analyses, Public finances, Sectoral accounts and analyses, Social protection, demography and prospective studies, Structural studies, Sustainable development, Transport.

Knowledge Centre on Pensions



MIDAS 2.0. Revision of a dynamic microsimulation model [24/01/2023]

MIDAS, the dynamic microsimulation model that focuses on the social sustainability of pensions, has undergone a major revision in recent years to improve the validity of the projections. This Working Paper not only reports on this revision, but also describes some important new modules.



Besides the National Pension Committee and the Academic Council, the law of 21 May 2015 also established the Knowledge Centre on Pensions (KCP). This Knowledge Centre gathers knowledge on pensions that is available in the various administrations, public institutions and public agencies (including the FPB). The aforesaid law also established a steering committee to coordinate the sharing of knowledge on pensions. A representative of the FPB sits on this committee, the secretariat of which is provided by the FPB. The Knowledge Centre must provide technical assistance to the National Pension Committee, the Academic Council and the ministers in charge of pensions.

The KCP deals with the assessment, in particular from a fiscal point of view, of reforms that have already been decided (retirement age increase, stricter career conditions for early retirement, etc.) and is involved in the preparation of proposals for measures and reforms (as regards arduous occupations, the taking into account of periods of study in the different pension schemes, the importance of assimilated periods in these schemes, preferential so-called ‘tantiemes’ (career fractions), the introduction of a points system, etc.) at the request of its interlocutors.

Methods and instruments

At the level of the FPB:

  • The budgetary impact of (proposals for) pension reforms is assessed using the MALTESE model (with the peripheral models PENSION, MOSES and PUBLIC respectively for the pensions of the employees' scheme, the self-employed scheme and the public sector scheme) (see the “Financial evolution of social protection” theme).
  • The social impact of (future) pension reforms is simulated and analysed using the MIDAS model (see the “Income distribution and poverty” theme).

These assessments are made in close cooperation with the pension administrations.


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