Konjunktur und Generationenbilanz - eine Analyse anhand des HP-Filters

Generational accounting is - given the future demographic developments in OECD countries - an established tool to quantify the fiscal situation of public coffers. However, as all economic methods dealing with future developments it has critical points. One in particular is the calibration on one base year which neglects business cycle effects on the generational accounts. This paper aims to analyze in which way and to which degree generational accounts and the associated sustainability indicators are biased due to the neglecting of business cycle effects. To do this we use the Hodrick-Prescott-Filter to estimate the business cycle effects for the German general government budgets from 1996 to 2005. We then calculate sustainability indicators based on all years given the actual and the business cycle adjusted budgets. It can be stated that the neglect of the business cycle definitively has an effect on the outcomes of the generational accounting framework. However the magnitude of this effect is rather small, at least for Germany. As a by-product of our analysis, we show that the German fiscal policy was rather pro-cyclical during the examined time frame and that the effects of these policies on the generational accounts are larger than the business cycle effects.